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Pelican Technical Article:

BMW DME Motronic
 ECU Swap / Repair

Difficulty Level: 4
Difficulty scale: Adding air to your tires is level one
Rebuilding a BMW Motor is level ten

  This article is one in a series that have been released in conjunction with Wayne's new book, 101 Performance Projects for Your BMW 3 Series. The book contains 272 pages of full color projects detailing everything from performance mods to timing the camshafts. With more than 650+ full-color glossy photos accompanying extensive step-by-step procedures, this book is required reading in any 3 Series owner's collection. The book was released in August 2006, and is available for ordering now. See The Official Book Website for more details.
 
Need to buy parts for this project? Click here to order!

[click to enlarge]

Figure
Figure 1

Figure
Figure 2

Figure
Figure 3

Figure
Figure 4

     The Bosch Motronic Engine Management system is what controls the ignition, timing and emissions controls of the later-model 3-series cars.  As such, it can be considered the brain of the car.  The ECU (Electronic Control Unit) will cause the engine to run poorly or to stop running altogether if it becomes damaged.  In this tech article, we'll talk a little about the DME, how to troubleshoot its problems, prevent damage to the unit, and repair or replace the unit.

Read the Codes

     First, if you are having problems with your car, you should check to see if the computer is giving out any fault codes.  See the Pelican Technical Articles, Code Reading and OBD-II Diagnostics for more details.  If the code readers are having trouble connecting to the unit, then you need to look further.

DME Relay

     Many people I have spoken to have had problems with the relay that controls the DME computer itself.  It's not uncommon for the main relay to have its contacts become corroded and fail to work 100% of the time.  Even if the relay is intermittent, it might show up as the engine running rough, or stalling, or any other number of failures.  One of the first steps I would take is to identify this relay (on E36 BMWs, it's relay number two, the white one, next to the fuel pump).  Try swapping it out with a known good one if you have one, or swap it with another one on the board (like the one for the fog lamps).  Try starting the car.  If you see an improvement, then you might have found the problem.  Start with the relay - it is the easiest and cheapest item to replace.

Early E36 DME Compartment Flooding Problem

     On E36 BMWs manufactured prior to July of 1994, there is a design problem with the car that has caused a lot of problems with the main DME computer.  The water relief channels of the car are not beefy enough to withstand a significant influx of water onto the car, or the windshield.  While perfectly adequate for anything that nature may throw at the car, the channels are woefully inadequate for a car wash.  If too much water is used, or if the water channels are clogged with leaves or debris, the water will overflow and leak into the compartment where the DME is stored (see the Pelican Technical Article on DME Chip Replacements for the location of the DME in the engine compartment).  I have heard stories of owners who have opened this compartment, only to have a gallon of water or more come flowing out.  Needless to say, having the main computer for the car submerged in water is not a good thing.

     How exactly does the water get into the box?  The DME compartment is located right next to the intake plenum cowl for the heating and air conditioning system.  This cowl is open to the enviroment, and thus will get rain water deposited into it.  There are drains at the bottom designed to drain this rainwater.  However, if the volume of water is too great, or the channels become clogged with leaves or other debris, this plenum will overflow directly into the DME compartment.  If enough water fills this chamber, it may also leak into the passenger side foot well, although this often goes unnoticed, as the water will leak under the passenger floor mat.

     BMW has issued a Service Bulletin and a relatively inexpensive fix for the problem.  The fix is to install a third drain and use an improved style of drainage hose.  The BMW factory bulletin that describes this repair is 41 03 93 (3914), and is dated July 1994.  Begin by removing the plastic screen covering the plenum, the portion of the plenum that covers the firewall, and move the wiring harness out of the way on the left side of the engine compartment.  Then remove the cylinder head valve cover - you will need to do this to gain clearance for working (see the Pelican Technical Article on Valve Cover Gasket Replacement).  Cover the top of the engine with a drop cloth or plastic garbage bag to prevent anything from falling in.

     Now, pull back the insulation that is located against the rear firewall.  Remove and throw away the right side plenum drain hose at this time (Figure 1).  Behind the firewall material, there is a circular area pre-stamped in the firewall just above and to the right of the original drain location.  You will be drilling out this hole and installing the new drain hose in this hole.  BMW specifically recommends against using a hole saw here - the metal shavings are too likely to contaminate either the engine or the plenum area.  Instead, start with a .375" pilot hole and use a 1/2" conduit punch.  Then, use a 3/4" conduit punch and enlarge the hole to 28.2mm (1.11").  File off the edges, paint with a small bit of primer, and then reinstall the firewall insulation.  Drill a corresponding hole in the installation, and install your two new drain hoses (part number 51-73-8-144-152), slightly angled 30 degrees towards the center of the car.  That's the BMW fix described for this problem.  Figure 2 shows the area where you need to drill (yellow arrow), and also points to the oil drain hose (green arrow) that should be pulled out and replaced (behind the cylinder head, which in this photo is covered by plastic).

    If you are not fortunate enough to have read this article before your DME got toasted, you may still have a chance to revive it.  Open the DME compartment and remove the DME unit (see the Pelican Technical Article on Chip Upgrades for more details).  If your DME is covered and soaked with water, then you may be able to save it.  Take the unit apart and expose the two circuit boards (Figure 3).  Although I have not used it myself, I have had several Pelican Parts customers tell me that spraying the board with WD-40 helps to dispel any water, dries the board, and sometimes works.  The board is already soaked in water at this point, what could it hurt?  Take the DME boards and place them in an oven set at about 100 degrees, and let it sit for a few hours.  This should help evaporate any remaining water that may have made it into the unit.  Reassemble the unit, and plug it back into your car to see if the problem still exists.  If it does, then you will probably have to replace the unit with another one (see this topic later in this article).

Cracked Solder Joints

      Some DMEs stop working for reasons that don't seem obvious (like being submerged in water).  If you borrow a DME computer from a friend and your car works perfectly, then you have indeed isolated the problem to the DME circuit board.  It is possible to sometimes inspect and repair these units.  The most common failure associated with old electronics units are cracked solder joints.  Have you ever had a Walkman-type stereo that had a broken head phone plug?  If you wiggled the plug one way, you could hear, but if you let go of the plug it would stop working?  This is a symptom of a cracked solder joint, and it can occur in your DME as well.

     If you take a close look at your board, you may be able to spot a cracked solder joint.  Some broken joints are not able to be seen with the naked eye though.  You have a good shot at repairing these joints by simply reflowing the solder at large solder connections that seem like they may be attached to components that give off heat.  The heat causes the crack to enlarge and then may separate, causing an intermittent failure.  The same thing can happen if the DME is rattling or exposed to excess vibration.

     To repair a cracked solder joint, simply get out your solder arm and reflow the solder (Figure 4).  In a unit that I am repairing, I usually like to reflow the solder on all the joints that are pretty large, and particularly the ones that look like they are attached to heat sinks.  These are most likely to experience cracks and failures.

DME Swapping

     Finally, if you've tried all of the approaches outlined above, and your DME unit still doesn't work, then you will probably have to replace it.  A little known secret is that many of the DME units are exactly the same across different automotive manufacturers.  The only thing that is different is the programming chip contained within the unit.  If the DME unit is the same version of Motronic, has the same connector on the unit, and has a removable chip, then chances are it can be a good replacement for your failed unit.  This means that a $10 DME from a Volkswagen in a junk yard may work in place of the $650 one that a BMW used parts dealer wants to sell you.  A few customers have experimented with this by swapping BMW DME computers with the ones used on the Porsche 944 and 911, and they have experienced good results.  Some units won't work (it's a matter of trial and error), but many will.  The main thing to remember is that you have to have the same software version of Motronic, the connector must be the same, and you must swap the chip from your DME to the new one.

     Although I haven't done enough testing to generate a table of replacement units that will work, here's a table that shows most of the models, engines, and DME versions for BMWs:

Model Chassis Engine Type

Year

Bosch
Part Number
Motronic Version

318is

E30

M42/B18

90-91

0 261 200 175

Bosch Motronic M1.7

318i/is

E36

M42disa/B18

92-12/93

0 261 200 990

Bosch Motronic M1.7

318i/is

E36

M42disaII/B18

1/94-12/94

0 261 203 282

Bosch Motronic M1.7.2

318i/is/Ti

E36

M42/B18 DISA2

1/95-->

0 261 203 282

Bosch Motronic M1.7.2 w/ EWS-II

318i/is/Ti

E36

M42/B18 DISA2

1/95-->

0 261 203 357

Bosch Motronic M1.7.2 w/ EWS-II

318i/is/Ti

E36

M44/B19

96-->

0 261 203 667

Bosch Motronic M5.2 (OBD-II)

Z3

E36

1.8L 8V (M44/B18)

96-->

 

Bosch Motronic M1.7.3

Z3

E36

M44/B19

96-->

0 261 203 667

Bosch Motronic M5.2 (OBD-II)

320i

E30

M20/B20 (129hp)

87-91

0 261 200 152

Bosch Motronic M1.1

320i

E30

M20/B20 (129hp)

87-91

0 261 200 172

Bosch Motronic M1.3

320iS

E30

S14/B20 (192hp)

87-89

0 261 200 087

Bosch Motronic ML3.1

325e/es

E30

M20/B27 (122hp)

9/84-12/86

0 261 200 027

Bosch Motronic Basic M1.0

325e/es

E30

M20/B27 (127hp)

1/87-9/87

0 261 200 154

Bosch Motronic M1.1

325i/ECE

E30

M20/B25 (171hp)

85-87

0 261 200 081

Bosch Motronic M1.0

325i/is/iX

E30

M20/B25 (170hp)

87-91

0 261 200 153

Bosch Motronic M1.1

325i/is/iX

E30

M20/B25 (170hp)

87-91

0 261 200 173

Bosch Motronic M1.3

325i/is/iX

E30

M20/B25 (170hp)

87-91

0 261 200 351

Bosch Motronic M1.3

325i/is/iX

E30

M20/B25 (170hp)

87-91

0 261 200 380

Bosch Motronic M1.3

325i/is/iX

E30

M20/B25 (170hp)

87-91

0 261 200 382

Bosch Motronic M1.3

325i/is/iX

E30

M20/B25 (170hp)

87-91

0 261 200 524

Bosch Motronic M1.3

325i/is/iX

E30

M20/B25 (170hp)

87-91

0 261 200 525

Bosch Motronic M1.3

325i/is/iX

E30

M20/B25 (170hp)

87-91

0 261 200 526

Bosch Motronic M1.3

M3

E30

S14/B23 (195hp)

86-08/89

0 261 200 071

Bosch Motronic M1.0 Motorsport

M3

E30

S14/B23 (215hp)

09/89-90

0 261 200 091

Bosch Motronic M1.0 Motorsport

M3 - Evo2

E30

S14/B23 (220hp)

88

0 261 200 090

Bosch Motronic M1.0 Motorsport

M3 - Evo3

E30

S14/B25 (238hp)

01/90-05/90

0 261 200 092

Bosch Motronic M1.0 Motorsport

325i/is

E36

M50/B25

thru 8/91

0 261 200 403

Bosch Motronic M3.1

325i/is

E36

M50/B25

9/91-8/92

0 261 200 402

Bosch Motronic M3.1

325i/is/ic

E36

M50tu/B25

9/92-12/94

0 261 200 413

Bosch Motronic M3.3.1

325i/is/ic

E36

M50tu/B25

1/95-->

0 261 200 413

Bosch Motronic M3.3.1 w/ EWS-II

328i

E36

M52/B28

96-->

 

Bosch Motronic MS41.1 (OBD-II)

M3 - Euro

E36

S50/B30

93-95

0 261 203 075

Bosch Motronic M3.3

M3

E36

S50us/B30

thru 12/94

0 261 203 506

Bosch Motronic M3.3.1

M3

E36

S50us/B30

1/95-->

0 261 200 413

Bosch Motronic M3.3.1 w/ EWS-II

M3

E36

S50us/B32

96-->

 

Bosch Motronic MS41.1 (OBD-II)

520i

E34

M20/B20 (129hp)

87-90

0 261 200 172

Bosch Motronic M1.3

525i

E34

M20/B25

87-90

0 261 200 173

Bosch Motronic M1.3

525i

E34

M20/B25

87-90

0 261 200 524

Bosch Motronic M1.3

525i

E34

M50/B25

thru 8/91

0 261 200 405

Bosch Motronic M3.1

525i/iT

E34

M50/B25

9/91-1/92

0 261 200 403

Bosch Motronic M3.1

525i/iT

E34

M50/B25

2/92-93

0 261 200 402

Bosch Motronic M3.1

525i/iT

E34

M50tu/B25

93-12/94

0 261 200 413

Bosch Motronic M3.3.1

525i/iT

E34

M50tu/B25

1/95-->

0 261 200 413

Bosch Motronic M3.3.1 w/ EWS-II

528i

E39

M52/B28

96-->

 

Bosch Motronic MS41.1 (OBD-II)

533i

E28

M30/B32

84

0 261 200 008

Bosch Motronic M1.0 Basic

528e

E28

M20/B27

9/84-12/86

0 261 200 027

Bosch Motronic M1.0 Basic

528e

E28

M20/B27

01/87-09/87

0 261 200 154

Bosch Motronic M1.1

535i/is

E28

M30/B34

85-87

0 261 200 059

Bosch Motronic M1.0 Adaptive (24 pin)

535i/is

E28

M30/B34

88

0 261 200 059

Bosch Motronic M1.0 Adaptive (28 pin)

535i/is

E28

M30/B34 (218hp)

85-87

0 261 200 061

Bosch Motronic M1.0

535i

E34

M30/B35

89-92

0 261 200 179

Bosch Motronic M1.3

530i

E34

M60/B30

3/93-8/94

0 261 200 404

Bosch Motronic M3.3

530i

E34

M60/B30

9/94-12/94

0 261 200 404

Bosch Motronic M3.3 w/ air pump

530i

E34

M60/B30

1/95-4/94

0 261 203 484

Bosch Motronic M3.3 w/ EWS-II

540i

E34

M60/B40

thru 12/94

0 261 200 404

Bosch Motronic M3.3

540i

E34

M60/B40

1/95-->

0 261 203 484

Bosch Motronic M3.3 w/ EWS-II

540i

E39

M62/B44

96-->

0 261 203 474

Bosch Motronic M5.2 (OBD-II)

M5/M635CSI

E28/E24

S38/B35 (260hp kat)

87-88

0 261 200 079

Bosch Motronic M1.0 Motorsport

M5/M635CSI

E28/E24

M88 (286hp)

84-87

0 261 200 055

Bosch Motronic M1.0 Motorsport

M5

E34

S38/B36 (315hp)

91-->

0 261 200 350

Bosch Motronic M1.2

633csi

E24

M30/B32

84

0 261 200 008

Bosch Motronic M1.0 Basic

635csi

E24

M30/B34

85-87

0 261 200 059

Bosch Motronic M1.0 Adaptive

635csi

E24

M30/B35

86-88

0 261 200 150

Bosch Motronic M1.1

635csi

E24

M30/B35

89

0 261 200 179

Bosch Motronic M1.3

730i

E32

M30/B30

89-92

0 261 200 178

Bosch Motronic M1.3

733i

E23

M30/B32

84

0 261 200 008

Bosch Motronic M1.0 Basic

735i

E23

M30/B35

09/80-09/82

0 261 200 001

Bosch Motronic M1.0 Basic

735i

E23

M30/B34 (218hp)

84-87

0 261 200 011

Bosch Motronic M1.0 Adaptive

735i

E23

M30/B34

84-87

0 261 200 059

Bosch Motronic M1.0 Adaptive

735i/iL

E32

M30/B35

86-88

0 261 200 150

Bosch Motronic M1.1

735i/iL

E32

M30/B35 (211hp)

89-92

0 261 200 179

Bosch Motronic M1.3

740i/iL

E32

M60/B40

9/92-4/94

0 261 200 404

Bosch Motronic M3.3

740i/iL

E38

M60/B40

1/95-->

0 261 203 484

Bosch Motronic M3.3 w/ EWS-II

740i/IL

E38

M62/B44

96-->

0 261 203 474

Bosch Motronic M5.2 (OBD-II)

745i

E23

M102/B34 (252hp)

83--86>

0 261 200 013

Bosch Motronic M1.0

750iL

E32

M70/B50

88-90

0 261 200 156

Bosch Motronic M1.2

750iL

E32

M70/B50

91-->

0 261 200 352

Bosch Motronic M1.7

750iL

E38

M73/B54

9/94-->

0 261 203 473

Bosch Motronic M5.2 (OBD-II)

840i

E31

M60/B40

9/93-12/94

0 261 200 404

Bosch Motronic M3.3

840i

E31

M60/B40

1/95-->

0 261 203 484

Bosch Motronic M3.3 w/ EWS-II

840i

E31

M62/B44

96-->

0 261 203 474

Bosch Motronic M5.2 (OBD-II)

850i

E31

M70/B50

91-->

0 261 200 352

Bosch Motronic M1.7

535i/
Alpina B9

E28

M30/B34 (245hp)

85-87

0 261 200 011

M1.0

Alpina B7
 Turbo

E24

M30 (300hp)

85-87

0 261 200 043

M1.0

Alpina B7
 Turbo Coupe

E24

M30 (330hp)

85-87

0 261 200 043

M1.0

Alpina B7
 Turbo Kat.

E24

M30 (320hp)

85-87

0 261 200 079

M1.0
Alpina B10
 Biturbo

E34

M30 (360hp)

89-94

0 261 200 079

M1.1

     In addition, you may want to check out this list of complete Bosch part numbers which correspond to the version of Motronic inside the unit.  This list is very handy to take with you to the junk yard to try to find a DME with a part number on it that matches the one in your car.

     Well, there you have it - it's really not too difficult at all.  If you would like to see more technical articles like this one, please continue to support Pelican Parts with all your parts needs.  If you like what you see here, then please visit our online BMW catalog and help support the collection and creating of new and informative technical articles like this one.  Your continued support directly affects the expansion and existence of this site and technical articles like this one.  As always, if you have any questions or comments about this helpful article, please drop us a line.

   
  Looking for more photos?  Click to see bonus pictures for this project.
   
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Comments and Suggestions:
Rick Comments: On my recent question, had a brain fade. Typed DCM...meant DME hopefully you caught my obvious stupidity. Sorry..........
November 27, 2014
  Followup from the Pelican Staff: No problem, got it. - Nick at Pelican Parts  
Rick Comments: I have an '01 E38 with chronic 4+ year "Check Engine Light" when I have no choice but to fill with ethanol containing gas. On recent trip, I ignored light and result was timing chain failure, so now have a newly rebuilt engine and trany just for assurance. Still have same issue with check engine light. After several reprograms with no improvement, my local indy now thinks bad DCM says he's getting an 027 code with his Autologic. Think this is my issue? Can you help with DCM? Is this a possible DIY project? Thanks for any help/advice you can provide.
November 27, 2014
  Followup from the Pelican Staff: I think 27 is a fuel trim fault. Check if the fuel trim is skewed in one direction. - Nick at Pelican Parts  
jackblg Comments: I have 95bmw 540i don't start no fuel no injector it cranks now after I input the code I was wondering it ews is not reading the key chip and if its not could that be caused I have the trans program showing in the instrument control
November 17, 2014
  Followup from the Pelican Staff: Trans program will not cause a no start. If it were an EWS issue, there would be a fault code stored. That would be a good place to start. Check the DME for fault codes. - Nick at Pelican Parts  
CHUNCH Comments: Thanks for the prompt reply!

My multimeter mode: battery load test 12v registered a value of 14.16 at both idle and under load @2500 rpm. Prior to this test, the car hasn't been started for 1-2 weeks. I used the multimeter on the battery during the tests. Let me know if I misunderstood your question and did this test incorrectly. Thanks again!
October 23, 2014
  Followup from the Pelican Staff: I need to know the voltage under a load and the current under a load. You likely have a charging system issue. - Nick at Pelican Parts  
CHUNCH Comments: Hi Pelican!

I have a 1995 e36 M3 that's giving me a "1231" check engine light code battery voltage/DME relay monitor. Since then, I have replaced the battery and tested the alternator with no luck. I've also removed the DME and cleaned the circuit board/computer chip with electrical contact cleaner, because there seemed to be some corrosion white powdery substance, but the CEL persists. I also swapped the relays from the fog lights to the DME slot with no luck. The car runs nicely as I drove it 50+ miles the other week. The previous owner did mention that the engine would stutter on the first gear at higher RPMs.

Does this sound like a bad DME to you? If so, I'm wondering how I should go about buying a used one. If a used DME has the same part number i.e. 0 261 200 413, can I simply plug and play? I truly appreciate the articles and support the best I can bought clutch slave cylinder at Pelican and finished the job with your article!. Thanks!
October 21, 2014
  Followup from the Pelican Staff: What is the charging system voltage and current? at idle and under a load? - Nick at Pelican Parts  
moe Comments: hi i have 2004 bmw 325i and the engine wont turn on than the engine was replaced and it still wont turn on but i can hear the engine turning on but it wont.
September 23, 2014
  Followup from the Pelican Staff: I can't help without knowing what is missing from the system when you are trying to start it. When your engine doesn’t start you’ll want to check the basics. Check spark, fuel injector pulse and pressure fuel, volume and quality. Are there any fault codes? Once you figure out what is missing, it will be easier to diagnose.
- Nick at Pelican Parts
 
césar Comments: Tengo el proble de q la computadora de mi vmw 318i 4 cilindros 1995 se mojo y encontre una en un chatarrero pero es de un vmw 318 pero es 1997 se podria aser algo para q quede ! O no son conpatibles?
September 13, 2014
  Followup from the Pelican Staff: You'll need to find a DME with the same part number or color code. If you find the same color, it will work as long as it is older than the model in your vehicle. - Nick at Pelican Parts  
Mtech318ti Comments: I got a 99 318ti 5-speed and bought a longblock of an owner said he got it off a 98 318ti 5-speed. It turned out to be a m42 longblock instead. Now i'm wondering which m42 it came off of. Is it possibly be a 0 261 203 282 or a 0 261 203 357?

And what are the differences between these two?
September 5, 2014
  Followup from the Pelican Staff: Those numbers dont show up for me in parts. Give our parts specialists a call at 1-888-280-7799, they may be able to help. - Nick at Pelican Parts  
Tristan Comments: okay so I am going to be changing out my red label DME and purchasing a used one in working condition. The red label on both are 0 261 200 413 from what I understand this is all i need. though I am wondering if you can explain to me what the other labels are and the numbers that are on them. I can assume that one is the firmware version and the other is when the manufacturers produced the DME is that correct?
August 1, 2014
  Followup from the Pelican Staff: I don't have that specific information. I believe color coding had to do with vehicle differences. - Nick at Pelican Parts  
Damian999 Comments: i give you a comparision here on the link, 316i e36 compact and 318i e36
http://www.zeperfs.com/es/match4613-1804.htm
July 15, 2014
  Followup from the Pelican Staff: Thanks for the additional info. We appreciate it.
- Nick at Pelican Parts
 
Damian999 Comments: hi, i have a bmw 316i compact e36 m43, and i have some drops after 2500 rpm and my engine seems other more porwerful after 3000rpm, 1st gear and 2nd and 3rd are more slower than before, BECAUSE my mechanician put me a BMW 318i e36 M43 318i only limusine, cabrio, and touring,not coupe 318is only exist, AND NOT FOR COMPACT.
MY QUESTION IS: is that the reason of my high consume of fuel, and lower agility on my car than before?
motronic is: my broken compact ecu 0261203276 = M172
the newer 318i ? ecu 0261203277 = M172
July 15, 2014
  Followup from the Pelican Staff: Those part numbers are for different size engines. You need the same DME part number. - Nick at Pelican Parts  
Arturas Comments: Have E39 520i 1996 i cant start the car becouse of no spark comming. Checked almost evrething, fuses, fuel pomp,crank sensor, cam sensor , spark plugs ,fuel pressure , compression.Its just happened suddenly after i moved car 2meters. Came back some hours later not starting, engine turning but with no luck to start. Lately car been acting strange , loss of power , cuts of on road and so ever. Could you help me please cant figure it out where to look , ecu? cables? Thanks
June 28, 2014
  Followup from the Pelican Staff: If you checked all the inputs and they are good, the DME might be faulty. - Nick at Pelican Parts  
Carlos Comments: Hi,

I own a 325i coupe, 1995 and Im having some issues, its rough on idle and sometimes it stalls, specially in the morning, we scanned the computer and its giving me an error code 54 control unit power supply via main relay DME, how can I solve this problem?
Thanks

Best regards

Carlos
May 26, 2014
  Followup from the Pelican Staff: That fault code indicates the main relay is not sending power to the DME. When this happens, it may cause your no start. I would check function of the DME relay when the problem is present. - Nick at Pelican Parts  
Rumburak Comments: Hello, I have a 1996 m44b19 engine in my E30. After 5200rpm it starts to break. Coils are ok, spark plugs also are ok too.I have the coil on plug upgrade, so there's no wires. Diagnosis says it misses Vehicle engine speed sensor signal. Is it true that this engine's ECU needs both speed signals : from differential sensor AND from abs sensors???
May 4, 2014
  Followup from the Pelican Staff: There are two engine speed sensors on the transmission bell housing. One for engine speed, the other for cylinder 1 ID. The fault code may be pointing you to an issue with one of them. - Nick at Pelican Parts  
budgie Comments: hi
I have an 1992 e36 318is. While swapping ecu chip over, I accidentally broke a pin off the chip. I was able to get another DME with the same part number from another 318is the DME is supposed to be for the same engine. Will it run the car?
Thanks
April 15, 2014
  Followup from the Pelican Staff: If the part number is the same it should work. If it isn't it will not. - Nick at Pelican Parts  
highvoltj Comments: Hello, I have a 1988 325is that has a warm engine stall issue..after initial start and warm-up, engine stalls and will not start until cool. Runs great until then. I am down to swapping DME's. Mine is a Motronic #380, can I use a #173 instead?
April 5, 2014
  Followup from the Pelican Staff: You will have to use a DME with the same part number. - Nick at Pelican Parts  
Brandon Comments: I have a 1987 325i tries to crank but no go. So far I have found no power to fuel pump and no start. For some reason when I do the pump method the only code I get is no faults found. I decided to disconnect the maf sensor to see if it would throw a proper code and it doesn't. I am kinda stumped on where to go from here. Any advice would be greatly appreciated.
April 3, 2014
  Followup from the Pelican Staff: Is the check engine light On with the key in the run position? It is possible the DME is not activating the fuel pump relay, causing the no start. - Nick at Pelican Parts  
Adriano Comments: I have a 1993 bmw 318i auto
Cranks but no spark
Transmission light is on but no Check engine light we have checked fuses relays, fuel pump and crank and cam sensors still nothing
We have switched the dme with one from a 1995 bmw with the same part number but no luck, gave it a tune up and fresh fuel as well
Computer wont read trans or engine only ABS
April 3, 2014
  Followup from the Pelican Staff: I can't help without knowing what is missing from the system when you are trying to start it. When your engine doesn’t start you’ll want to check the basics. Check spark, fuel injector pulse and pressure fuel, volume and quality. Are there any fault codes? Once you figure out what is missing, it will be easier to diagnose.
- Nick at Pelican Parts
 
tXu Comments: Will a 325i/ECE dme make a power diferrence installed into a 325e/es ??
And if not, what would it take to reach 170hp without swapping the cam and head?
I'm thinking maybe tb/afm and injectors?
April 2, 2014
  Followup from the Pelican Staff: A DME will not get you that power. You will need mechanical engine changes to gain that sort of power. - Nick at Pelican Parts  
brally fan Comments: thing are geting better nick , i got a dme and ews from a buddy and every thing powers up dme fuel pump and one thing the guy i got the stuff from lost the key so it will not crank the code is p0600 serial colmm link malfuction , can i get my old key programed to the new stuff or is there a way i can bypass and put a starter button ,ill turn the key to on and hit the starter botton
March 31, 2014
  Followup from the Pelican Staff: You'll need to marry the items, or use the key that came from the donor parts. - Nick at Pelican Parts  
brally fan Comments: ok thanks, is there a photo or diagram that shows the harness plug to the dme that tells me what pins are to have power or are ground when the key is in the on position ,97 328is , so i can check with test light
March 30, 2014
  Followup from the Pelican Staff: I don't have one to share. i would grab a repair manual. It should have what you need. - Nick at Pelican Parts  
brally fan Comments: now the siemans dme from the 528i did not come with the ews , but the #s match on thr dme
March 30, 2014
  Followup from the Pelican Staff: The coding or programming may be incorrect, as it is from a different vehicle. - Nick at Pelican Parts  
brally fan Comments: with the original dme no code , it reads no link-- , but with the one from the 528i i get 340 cam sensor , i have replaced the cam and crank sensor
March 30, 2014
  Followup from the Pelican Staff: The DME may be faulty. Check powers and grounds, then the data line for communication. These need to be checked before condemning it. - Nick at Pelican Parts  
brally fan Comments: with the original dme no spark , but with dme from 528 i spray intake and it starts for 2 to 3 sec, i put the main relay with out the cover and push the relay my finger the fuel pump come on ,and when i put a jump wire to the fuel pump fuse it goes on , and when i press the walve on fuel rail it sprays fuel with alot of power , but when it cranks the pump dont come one ,
March 30, 2014
  Followup from the Pelican Staff: I would try the correct DME for your vehicle before digging any deeper. You need a reliable testing scenario. - Nick at Pelican Parts  
brally fan Comments: hi i have a 1997 328is got it from an auction , cranks but dont start , the code reader comes up no link and when you turn key on the engine ligt dont come on , i read if the light dont come one the dme is bad it looks like it got wet,i went to a junk yard and got the same #siemens dme out of a 528 now the light comes on and it cranks but still wont start and code 340 cam sensor comes on buy i replaced it 2 times with new one , i need help ,,
March 30, 2014
  Followup from the Pelican Staff: I can't help without knowing what is missing from the system when you are trying to start it. When your engine doesn’t start you’ll want to check the basics. Check spark, fuel injector pulse and pressure fuel, volume and quality. Are there any fault codes? Once you figure out what is missing, it will be easier to diagnose.
- Nick at Pelican Parts
 
Anthony Comments: Hello i found out the dme was bad replaced all good with red label 413 ecu but u said is scan my car with scanner what a good scanner? that will work on my 1995 bmw325i obd1

i bought these off ebay but couldnt get it to work..

http://www.ebay.com/itm/161141090912?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1497.l2649

I was told i needed these one ads
http://www.ebay.com/itm/261369476704?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1423.l2649


Any help be nice on what type scanner to get id like one i dont have to install software lol but i did and never could see my car listed under shift f9 there wasnt no cars under it.....
March 25, 2014
  Followup from the Pelican Staff: I dont have any experience with those tools. You will have to ask the retailer. An advanced BMW scan tool should do it. - Nick at Pelican Parts  
Anthony Comments: Hello,
i have a 1995 bmw 325i. What controls the check engine light on the 2nd on position? because it comes and goes it will not crank unless the check engine light comes on . Iv replaced
I have changed out the fuel filter.
I have changed out the fuel pump,
I have changed out spark plugs,
I have changed out main relay,
I have changed out the relay fuel with a different fuse,
Also i im going to put in a fuel regulator tomorrow.
I'm running out of ides,

I was told ecu is DME? might be going out? and the car does not always show a check engine light before cranks, once it does crank over the check engine light will stay on and sometimes blink,
I tryed the pedal stomp test once the engine light came on no response, Im clueless,

http://youtu.be/gozPjWzVJbo

also i try check dash lights and fuses once i put it back in both my blinkers stay green, lights are always on. and my fuel gauge not showing fuel tank witch it is....

Hope u can help me.....
March 15, 2014
  Followup from the Pelican Staff: If the check engine light is not on, the DME may not be powered up. I would check to see if the DME is communicating with a scan tool when the problem is present. If so, check for fault codes. My gut tells me it will not be communicating. - Nick at Pelican Parts  
E30troop Comments: I have a 1995 m3 engine in my e30. The car ran fine with a red label 413 DME. The DME got wet and car didn't run. I replaced the DME with another red label 413 and now it cranks, I have fuel pressure and the injectors spray but no spark. I checked power and grounds at the coils and they are good but no spark. I have voltage to the coils. Any ideas??
March 6, 2014
  Followup from the Pelican Staff: I would check that both engine speed sensors are sending a signal to the DME. If I remember correctly, one of them failing may result in a loss of spark. - Nick at Pelican Parts  
e36 Comments: hello tech team..i have just started a complete engine swap and gearbox conversion on my e36 318ti,i am swapping out the old motor and auto tranny for a manual and mint condition motor,both are e36 m44b18 1796cc with ews/chip as one is a 95 and other is 96..however,i would just like to know if i have to get the keys re-programed or can i just swap out the ignition barrel and door lock/boot lock ??.any help on this would be much appreaciated
March 2, 2014
  Followup from the Pelican Staff: if you have all the parts, I would swap them out first. Worst case scenario is you need to program the EWS. If you have everything, it should work without programming. - Nick at Pelican Parts  
Zeke Comments: I have a 1994 325is and a couple weeks ago i had a run in with a curb, only thing that was damaged was my wheel but i accidentally left a light on in my car all night so the battery died so i jumped it off to move the car, turned it off and since then it hasn't cranked. Could i have knocked the ECU loose, or hurt something else similar?
February 22, 2014
  Followup from the Pelican Staff: Not sure. I would start by checking if the starter is getting the crank signal from the ignition switch. Also check the fuses, jumping the vehicle may have blown a fuse. - Nick at Pelican Parts  
blue beast Comments: when working on my 1995 bmw 325i, the battery was changed out but a mistake was made and the battery was installed backwards wrong terminal +to- .....this caused a spark and immediately the battery was placed correctly .. now the car wont turn over .... the gauge cluster is inoperable... and the windows, automatic locks and alarm system wont work ...but all of the lights work.. could this be a sign of a fried ecu or could it just be some blown fuses ?
February 19, 2014
  Followup from the Pelican Staff: I would start by checking and replacing the blown fuses. Usually with this happens control modules are damaged. Sometimes you can get lucky with just blown fuses. - Nick at Pelican Parts  
Mik2014 Comments: I have a 2000 540I manual . I am getting a ram checksum error consistently.
Can i replace the Ram ic?
is my DME a 5.2 or a 7.2?
Mike
January 23, 2014
  Followup from the Pelican Staff: There re DME repair companies. Your vehicle should have 7.2. - Nick at Pelican Parts  
chris Comments: I have an E38 '99 750iL with twin DMEs / 20pin connector. The car runs fine, and software such as INPA, DIS, PROGMAN etc all work, with the exception of obtaining any data from the DMEs with any of these systems. I believe I have adequately checked the cars diagnostic wiring, and the plugs to the connector leads. Is this a 750 DME issue, or is there something I have missed? Any help gratefully received.
January 22, 2014
  Followup from the Pelican Staff: There two plugs for your vehicle, if I remember correctly. Have you tried scanning both? If so, the data line may be shorted. - Nick at Pelican Parts  
Lucster Comments: Sorry I wrote down the wrong ECU P/N...

I have a 1985 E24 BMW 635CSi And it won't start.
Engine is cranking but won't start fresh gas is in and starter turns the engine. Everything looks OK, but I don't have 12 volts at the ignition coil and no spark going to the distributor.
I suspect the a bad ECU.
ECU P/N 0261 200 011 - Bosch Motronic.
Is this ECU compatible with other BMW P/N's?
Do you know where can it be rebuilt if the case?
January 19, 2014
  Followup from the Pelican Staff: I answered you in your other comment. - Nick at Pelican Parts  
Lucster Comments: I have a 1985 E24 BMW 635CSi And it won't start.
Engine is cranking but won't start fresh gas is in and starter turns the engine. Everything looks OK, but I don't have 12 volts at the ignition coil and no spark going to the distributor.
I suspect the a bad ECU.
ECU P/N 1261 200 011 - Bosch Motronic.
Is this ECU compatible with other BMW P/N's?
Do you know where can it be rebuilt if the case?

Thanks,
Luke
January 19, 2014
  Followup from the Pelican Staff: You can try a salvage yard or ebay. I could not find a list of compatible DMEs. - Nick at Pelican Parts  
krickman Comments: Me and my friend were trying to put a chip in his 1992 bmw 325i e36 automatic and he scratched a piece of the ecu and now his car cranks but doesn't start nothing happens when he hits the gas he wants to get a new ecu which one does he need? or use? he needs his car bad hank you
January 19, 2014
  Followup from the Pelican Staff: What is the year and model of the vehicle?
- Nick at Pelican Parts
 
ricks99 Comments: Have a 2004 325i. After weeks of troubleshooting, have finally determined that the ECU is the problem. Was told by BMW dealer than I cannot simply swamp a used one and must purchase a new one from dealership matched to my car's VIN. Is this correct? Your article seems to indicate that I can get a used one and flash/reprogram it for my car. Thanks!
January 15, 2014
  Followup from the Pelican Staff: With 2004 models, you will need a new DME. - Nick at Pelican Parts  
steve3smart Comments: I fitted an E36 m42 engine, harness and ecu into my E30 m40. The seller said it was non EWS. The engine cranked over but there is no spark. I checked online and it is an EWS2 Ecu. Can I replace the ECU with an earlier E36 unit from a junkyard?
January 10, 2014
  Followup from the Pelican Staff: It's worth a try. With situations like this it is trial and error. - Nick at Pelican Parts  
michelleharr Comments: *also like to mention, we had the car checked out and they said that there was no spark and no injector pulse.
also there was a voltage across the fuel pump relay, but this had to be manually switched on by hand to make the fuel pump go. however this still didnt make the car start.
January 3, 2014
  Followup from the Pelican Staff: See my earlier reply. I need more information. - Nick at Pelican Parts  
michelleharr Comments: Hi there,
we have a 325i 1992 bmw. One day it suddenly stopped cranking over, it would try to turn over but it wouldnt. A few times it did start and would run okay, but then one day it just wouldnt start any more.
We thought it might be the fuel pump so we replaced that, it did nothing.
We have been told it could be the ecu?
do you have any idea?
January 3, 2014
  Followup from the Pelican Staff: I can't help without knowing what is missing from the system when you are trying to start it. When your engine doesn’t start you’ll want to check the basics. Check spark, fuel injector pulse and pressure fuel, volume and quality. Once you figure out what is missing, it will be easier to diagnose.
- Nick at Pelican Parts
 
Shadow Comments: I have a problem with my 2006 325i Auto e92. I recently sent the car to ZF gearbox people to seal an oil leak, they did a software upgrade and now the car wont Rev past 4000 in any Gear. I sent it to BMW and they said that the DME is faulty, they also did a software upgrade. But now they want a huge amount of money to fix it.
January 2, 2014
  Followup from the Pelican Staff: I would imagine the DME failed as BMW stated. No reason not to trust their diagnosis. They know the cars well. - Nick at Pelican Parts  
broadie Comments: have a bmw735il transmission was fine was driving along then dropped out of gear reverse works fine doesn't seem to go into gear
December 29, 2013
  Followup from the Pelican Staff: If it failed abruptly, a mechanical component likely failed. You will need to tear it down to determine the failure. - Nick at Pelican Parts  
Philip Comments: On my 1985 BMW e30, the CHECK light always flashes same speed nonstop even before starting the car and the 5-gas pedal push does not do anything. Would that most likely be a bad DME?
December 23, 2013
  Followup from the Pelican Staff: I would confirm this isn't your maintenance light before digging too deep. Try resetting your service indicator. - Nick at Pelican Parts  
mario Comments: Ok. I have sorted mine- hope it helps someone else or update/add to the article ^^ . Mi DME got flooded and the car just died. I took it out dried with heat gun and put it back together. car then was starting but not running right with rough idle and car cutting out at/above 4000 rpm. so I took the DME out once again to find that there is water in it again. After taking off the bottom plate taking out circuit board completely found that there is oxidation and signs of corrosion on the bottom part of DME the one with all the resistors on the bottom that means that oxidation and rust with a little help of water was causing the signals to be incorrect. Sprayed the bottom part with WD40 and cleaned it with a soft toothbrush. after that dropped a bit of silicon remover to get rid of largest deposits of grease that wd40 left. then sealed DME case with gasket silicone and put the DME on a little bracket that it would sit higher and with a pocket of air under it so in case of little water splashing in my DME wouldn't touch it.and the car has been running fine ever since ;
December 23, 2013
  Followup from the Pelican Staff: Thanks for the follow up. We appreciate it.
- Nick at Pelican Parts
 
mario Comments: Hi. I own a 94e36 with 95 M42B18 engine and my DME got flooded. I have dryed it out and the car starts and usually idles ok when cold, but once start driving engine would stall and rpm is erratic. If I keep my foot down a bit on gas so rpm would stay round 1500 it will not stall but I'm lacking power and sometimes rpm jumps up. exhaust smells like a bad mixture. did I not dry out my dme properly or did I efed up my o2 sensor when was cranking the car after the flooding without igniting ? there are rarely signs of dme cutting outor air flow meter failingthat the car just Dies while driving. any advice is much appreciated .
December 21, 2013
  Followup from the Pelican Staff: If the DME got wet, it is likely faulty. I would start by replacing it. - Nick at Pelican Parts  
ANTMAD Comments: Any help will be appreaciated I have a 98 328i with a check engine light and codes for a misfire cyl. 3 have spark and injector is working could my problem be the DME?
December 19, 2013
  Followup from the Pelican Staff: I would check compression before going after the DME. - Nick at Pelican Parts  
KiloWattsHour Comments: My 1995 BMW 525i / E34 Auto will not start or crank no click - no noise - nothing - in cold weather - apx. around freezing temp. After googling a bit, I stumbled on the idea to heat the starter relay. We opened the electrical box excuse my terminology - not a mechanic and used a heat gun to warm the section. Within 3-5 minutes, the car started - no problem. I am in Oklahoma and the car runs fine when there is warm weather - circa 35 degrees and higher. I see this is the E36 forum but could not find relevant E34 info anywhere else. Is the the starter relay faulty or are there different relays with different temperature sensors? Or was this lucky and the underlying problem could be something else?
December 18, 2013
  Followup from the Pelican Staff: Sounds like you have located the area of the problem. I would try swapping relays around and see if the problem goes away. Then replace the relay that remedies the problem. - Nick at Pelican Parts  
Kevin Comments: My 92 325i was running fine yesterday, this morning, cranks no start. No codes in ecu, although sometimes I can't get any flashes from the ecu. Ocassionally it will run, but the check engine light comes on and it dies. I am stumped. Thinking it may be the ecu.
December 16, 2013
  Followup from the Pelican Staff: I can't help without knowing what is missing from the system when you are trying to start it. When your engine doesn’t start you’ll want to check the basics. Check spark, fuel injector pulse and pressure fuel, volume and quality. Once you figure out what is missing, it will be easier to diagnose.
- Nick at Pelican Parts
 
dazed Comments: The guy I bought this car off had already replaced the crand triger,he never did get it to run , I did a compression test and all 6 cyl didn't have over 60 psi, when I tour down the eng the rings were washed out ,the triger wire frome the DME is #3 pin outBRN-GRN but there is two wires on the back of the relay and acording to the schmatic from mitchell the second wire goes to a ETC unit what is the ETC? and why would this cause it to open the injectors and let excesive fuel in ? could there be a problem with the DME in the mean while I will check continuity on the control wires thanks for your help.
November 23, 2013
  Followup from the Pelican Staff: Next time do a "wet" compression test before tearing down the engine unless you wanted to rebuild it anyway. Which terminal goes off to the ETC. ETC could be electronic throttle control or electronic transmission control, I don't know what abbreviations Mitchell uses. What terminal number goes off to the ETC? - Kerry at Pelican Parts  
Dazed Comments: I just bought a 89 525i not running I rebuilt eng and driving it now trying to work bugs out but I have a 1261 code, tested relay and pwr /grd all test good ,turn key to on position eng not runing and fuel pump does not shut down ,when starting cold/hot it will flood and start and die have to push on fuel pedal to get it to start and clean up any sugestions please?
November 22, 2013
  Followup from the Pelican Staff: This is a tough code as it is a fuel pump relay code. i would check the control circuit and voltage drop on the control circuit to the DME. This is the line the DME monitors, if there is an issue, it will be here. In the past, I have seen this code associated with crankshaft sensor problems, a new crank sensor has remedied the fault also. I would start with the fuel pump relay circuit as the crank sensor is along shot. - Nick at Pelican Parts  
Sharon Comments: Hi Nick, thank you so much. I'm not too sure where the Vanos thing came in either, lol but we were thinking timing...we will check the fuel pressure this weekend. Thanks again.
November 21, 2013
  Followup from the Pelican Staff: I'll pass the message along to Nick, thanks for the feedback - Kerry at Pelican Parts  
jwb Comments: I have a 96 328iC which has an ECU which showed water corrosion. I cleand it up and still have misfore issues. I also have a used ECU with same Siemens numbers. Can I pull the CPU from my ECU and install into new ECU and drive away happy? Or would it have to be married anyway by BMW shoplocal BMW dealer told me they couldn't do it that I would have to order direct from the factory a new ECU
November 21, 2013
  Followup from the Pelican Staff: IN '96 you will have to at least align the ECM with the immobilizer if you have one, you may not. Back then it was an option. The key sensoing immo units didn't start till about 2000 - Kerry at Pelican Parts  
Sharon Comments: Hi again. Thank you for your pointers. When I get home I will double check that it isn't backwards.Do you think this situation I am having would benefit from perhaps changing the Vanos? We are reading a lot online about that. But truthfully if all checks out and nothing is backwards, after switching out the Vanps, I have no clue what else to do but take it to the BMW service dept. Thank you so much for your help!
November 18, 2013
  Followup from the Pelican Staff: Not sure how we went from no fuel to VANOS. But I would deal with the lack of fuel before replacing any other parts. - Nick at Pelican Parts  
sharon Comments: Hi Nick, thank you for your response. The car does crank and sometimes will even start but will sputter and die within seconds. We will what you suggested by checking the fuel pressure but the filter was just replaced. Could the filter just be bad right out of the box? I am so confused with this car. It was absolutely a dream. Went from driving like a perfect piece of machinery to breaking down, no warning.
November 17, 2013
  Followup from the Pelican Staff: Unlikely that the filter is faulty, unless you installed in backward. be sure the arrow on the filter is pointing int correct direction.

Also, be sure to check spark and fuelk injector pulse when the problem is present. - Nick at Pelican Parts
 
Sharon Comments: I apologize. I'm on my tiny smartphone and didn't realize this was an e36 forum.
November 16, 2013
  Followup from the Pelican Staff: That's ok
- Nick at Pelican Parts
 
sharon Comments: I have a 2004 325xi that wont start. Ran it low on gas, filed it up with premium fuel as I always do and I get 3/4 of a mile down the road and it dies. I start it up and it runs sluggish then dies again. I have it towed to o'reilly's and code pulled reads cylinder 4 misfire. I change the coil and drive around the block and it's still sluggish and dies. Back it into the driveway and now won't start at all. No sound from the fuel pump so we replaced that along with the fuel filter. Nothing. Replaced the battery after testing it was bad, nothing. Won't start. Replaced camshafts, crankshaft and have checked all fuses...We've a also checked the plugs, coils, etc. Bought a code reader and pulled all cylinder misfire and camshaft. ..I don't know what else to do. Please help!
November 16, 2013
  Followup from the Pelican Staff: Does it crank and not start or does it do nothing when you turn the key? If it cranks, I would start by measuring the fuel pressure and volume, It should be around 54 psi and put out 1L per min. If the volume is low check teh fuel filter.
- Nick at Pelican Parts
 
Chris Comments: I have a 2008 320i that had water damage to the DME computer. Leaves built up apparently and caused the DME to be submerged. Is it possible to use a second hand DME from a wrecker les say, and reprogram it for my car?
November 15, 2013
  Followup from the Pelican Staff: Not on a 2008 model. You will have to replace the DME with a new one. - Nick at Pelican Parts  
mrredneckbmr Comments: I have a 1990 525i .Thought it was the fuel pump, but it has no spark and only has 1444 code stored : - nothing else:

My guess I may have some wiring rot or rotted
connectors somewhere - not uncommon in car this old or
do you have some other tests I could run.? Please help ...
Thanks in advance !
November 12, 2013
  Followup from the Pelican Staff: Check the two engine speed sensors in the bell-housing. One reads TDC the other reads engine speed. - Kerry at Pelican Parts  
ado93 Comments: hello, i have been trying to solve this for weeks now, i am praying someone on here might know what the problem is. my 1994 bmw 740i idles rough, has almost no power, and will not rev past 3000rpm, the car will behave as it has hit its limiter. power starts to return around 2200rpm on its own without me adding any pressure to the gas pedal. i have gotten 3 codes from the vehicle, 1212,1213,1221, what should i look for? i havent found any vacuum lines leaking, and i have replaced a few of the sensors on the throttle and nothing. please help!
November 5, 2013
  Followup from the Pelican Staff: Those are all o2 sensor faults, I would check the cats to make sure they are not plugged and I would also measure the fuel pressure and volume. Look for a clogged fuel filter.
- Nick at Pelican Parts
 
peyo Comments: replaced starter motor on 1992 bmw 318is, now starter keeps spinning after engine is running. could be bad a relay?
October 31, 2013
  Followup from the Pelican Staff: I could be the starter is not seated correctly and is hanging up on the flywheel.
- Nick at Pelican Parts
 
Karl Comments: I have an E46 325i that I just recently tore apart to clean and put back together. It did start and ran smooth so I could get fluids in the car but still had the old fault codes in the ECU. So, I cleared the codes with a scanner while the engine was running and now the engine will not fire. There is fuel pressure and all of the sensors are working fine. Is it possible that I could have damaged the ECU by sending a clear command with the engine running?
October 31, 2013
  Followup from the Pelican Staff: The ECU should be fine, do you have spark? Have you put a fuel pressure gauge on the engine? Does it crank ok?
- Nick at Pelican Parts
 
sbaracing Comments: Update on problem below... Used the gas pedal method to pull codes on my E36 BMW M3. The CEL spit out code for 12 hours and never got to the end where I could re-set them. I gave up and decided to order a scanner. BUT, now the car won't start. Drove car into garage, pulled codes from DME, car won't start. Starter clicks in super rapid succession, but cannot get the car to crank. Dash lights-up, battery is charged, etc. Did the starter magically fail at the very moment I decided to pull codes from the computer or is this a related problem to the unending stream of DME codes??
October 19, 2013
  Followup from the Pelican Staff: Sounds like you have a bad ground or battery positive feed. Check the grounds to the engine near the right side motor mount. The best thing to do would be to voltage drop test the starter. The new issue and your list of codes may be related to a bad connection.- Nick at Pelican Parts  
sbaracing Comments: I have a '95 BMW M3 US spec. Had an engine hesitation problem under load between 2500 RPM and 3500 RPM. Pulled codes, reads 1274 IGN. COIL #4. All of the coils are brand new and I can't seem to get the codes to finish reading on the dash. The car has been flashing the same code for close to 7 hours now started at 11 am, is now 6 pm. Would like to clear codes, move ign. coil to other cylinder and re-check but the OBD won't stop running that code on the dash! Is there an additional problem with the car??
October 17, 2013
  Followup from the Pelican Staff: I would disconnect the battery and then clear the codes. Or try using a scanner to clear the codes. Also check the ignition boot on the coils make sure they are not burnt.
- Nick at Pelican Parts
 
Sirvacster Comments: I have a 1992 850i with 60,000 km. The engine often starts on only one bank. After running for a short time revving it will sometimes start the other bank but usually shutting it down and restarting it is the least painful way . Is it the computer do you think? If the ambient air temp is around 70 degrees it will usually start normally. Help please!
October 14, 2013
  Followup from the Pelican Staff: Your vehicle does have two DMEs. You could have an issue with power or a signal to one. Check that both DMEs are getting power and ground. This would be a good place to start.- Nick at Pelican Parts  
George Comments: I have a 1984 633csi and it starts fine. after running 5-10 minutes it will stall and not restart. turns over fine. BMW said I needed to replace main and fuel pump relays. I replaced one ion the side of the fuse panel but can't find the main relay. can you direct me to the main relay and if this doesn't solve the problem, any other ideas? Thanks for your help...
October 12, 2013
  Followup from the Pelican Staff: It is on the left side of the engine compartment.
- Nick at Pelican Parts
 
kefalonia Comments: hallo guys
I am dennis from Greece
I just swap an 4.4 bmw from e39 540 bmw to an e30
but I have an issue with the immobilizer
the ecu is using is with 4 plags the guy I do my electronics with says that is not possible to remove the immobilizer and that we have to move all the parts are needed from one car to the ather
any idea how we will avoid that?
is it possible to disarm the immobilizer completely?
October 11, 2013
  Followup from the Pelican Staff: You are going to have to swap everything from the other car, or install new parts and have them coded. The DME and the EWS both have to match or the car will never start.
- Nick at Pelican Parts
 
JP Boshoff Comments: hi i have a BME E36 323. after washing the car cranks but does not start. i had this probleme before but after about 2h it started but now there is nothing. i did check everything and all i could find that there was no spark. could it be a sensor or what would you sugest
October 4, 2013
  Followup from the Pelican Staff: Check the crank sensor and main relay a bad main relay can cause similar problems - Kerry at Pelican Parts  
Big bad Wolf Comments: Yeah, I have a 87 325e, making a track day car out of her and a friend and I deleted most of the wiring harness......now I have a start/ no start issue......google search gave me OBC, on board computer which I deleted, Main relay which seems to be good, or the DME.....tends to start more often when cold, kill it, 50/50 on restarting......what cha' think?
September 26, 2013
  Followup from the Pelican Staff: It's hard to give advice if I don't know what is missing from the equation. If your engine doesn’t start you’ll want to check the basics. Check spark, fuel injector pulse and pressure fuel, volume and quality. Once you figure out what is missing, it will be easier to diagnose.
- Nick at Pelican Parts
 
ellarose Comments: hi i wanna buy this car 2006 BMW 325i 100K MILES AUTOMATIC - $4600,IT HAS FLOOD DAMAGE,THE CAR DOES NOT TURN ON, ONE OF THE COMPUTERS HAS TO BE CHANGED,any idea how much that will cost to fix
September 26, 2013
  Followup from the Pelican Staff: Impossible for me to know the cost without knowing exactly what has failed. It also depends on how many control modules are faulty. it could be multiple, especially with a flood vehicle - Nick at Pelican Parts  
alofmai Comments: I have a problem with 318i2004yr. I already change a valvetronic motor and also eccentric shaft sensor but still no power to turn the motor. I'll also try the reset thing from the scanners, it doesnt seem to work. now I have another problem, cann't start the engine. I scan the EWS and this codes comes up #OF- power on rest #OE- DME,changing codeXor-error
September 24, 2013
  Followup from the Pelican Staff: We don't have your vehicle here in the US, but I will try to help.

If your engine doesn’t start you’ll want to check the basics. Check spark, fuel injector pulse and pressure fuel, volume and quality. Once you figure out what is missing, it will be easier to diagnose.

If you an EWS fault, this could block fuel injector pulse creating a no start condition. - Nick at Pelican Parts
 
brandon Comments: Hi,I have a 1998 323is with ews ll and my car doesn’t start in cold 70ºf or below it doesnt crank or anything. All dash lights come on i hear a buzzing noise from the fuel pump but nothing else happens. I have figured out that if I come into a no start situation I can unplug my ews and wait usually 5 minutes then reconnect it it will let it start sometimes. Sometimes i have to wait longer. Its very odd. I have purchased a new key from the dealer thinking it was the transponder chip but it still occuring.if you can help it would be greatly appreciated. Thanks.
September 13, 2013
  Followup from the Pelican Staff: Your EWS is just and electronic starter relay, the release signal comes from the DME. When the car won't start check to see if there is power coming out of the EWS pin 1. Should be a black and yellow wire. If there is no power there, use a factory scan tool to make sure the starter is released by the DME and the EWS, if they are replace the EWS, if they aren't you are going to have to look into why. If there is power on that wire it is going to be the starter motor.
- Nick at Pelican Parts
 
Gdad Comments: Can anyone tell me which pin on the ECU connector is connected to the foot pedal switch to read the codes?
September 11, 2013
  Followup from the Pelican Staff: What year and model car do you have.
- Nick at Pelican Parts
 
barry Comments: Hi

Is there any benefit to using a certain ECU for my e30 other than what came out of it? I noticed there are 6 others that can replace my 173 Model 1988 325is m20b25
September 6, 2013
  Followup from the Pelican Staff: There really is no real difference, programing in it maybe a little different but overall it will be the same.
- Nick at Pelican Parts
 
jan Comments: Hi I need a computer box for my 318i e36 bmw can somebody help me withone pleas the computer on my engine Iis burned and Iit dont want to start al all
September 2, 2013
  Followup from the Pelican Staff: - Nick at Pelican Parts

It sounds like you need a DME,Give our parts specialists a call at 1-888-280-7799 and they can help figure out which part or repair kit you need.
 
Danl Comments: Hi Pelican

I have a '95 E38 740il with a vexing problem that has been going on for 7 weeks now: somewhat rough idle, TERRIBLE power for any throttle more than slight, bad gas mileage. I've checked compression OK, checked fuel pressure & flow rate, resolved all vacuum leaks, tested all inputs to the DME temps, throttle, CPS, MAF, etc. and they all seem fine. I've even checked sensor wires to see if there is an internal break. The only fault code i get is "ignition", which does not mean much. But the O2 sensor on one side it's a V8 is not fluctuating correctly, and a new sensor does not fix the problem.

So, now I'm down to thinking there might be a DME fault. I notice the resistance between the O2 sensor pins on the DME on the "bad" cylinder bank are 50 ohms, while that on the "good" cylinders is 110 ohms.

Do you know if the dealer, or someone else, has the equipment to actually TEST a DME such as, feed it known good signals and see if it responds with the expected outs? I'd hate to get a new DME just to learn that's not the problem.
August 14, 2013
  Followup from the Pelican Staff: You posted an E38 question in the E36 forum. is there any chance we can test the back pressure in the exhaust before you replace an expensive control unit. What is the manifold vacuum at idle and what happens to it when you whack open the throttle? It should drop down to 0inHg if not you may have a clogged exhaust (cat). You can drop the exhaust and see if power comes back. - Kerry at Pelican Parts  
Firtste36 Comments: Ok I have a 95 318is build date 7/95 so it has an ews 2. I bought it as a no. Running project. It was turning over but with no fuel and no spark. I noticed that the dme gets really really hot and that someone had tried to bypass the ews by cutting and splicing the wires. I hooked the wired back the way they're supposed to be and I get nothing when the key is turnedwith the wires spliced it turns over but again no fuel or spark. The ignition is showing a copper wire ring around it and seems a little loose so I tried the key in the doors and trunk and it doesn't work. So the ignition had been replaced hence why they tried to bypass the ews. Also the key is hollow no chip or anything. Do you guys have any suggestions for me that don't involve a dealer? I hate taking my cars anywhere to have work done on them.
August 6, 2013
  Followup from the Pelican Staff: I would start by checking the DME for fault codes. If the system is not working properly, a fault code will be set. This will be your best bet when diagnosing. Otherwise you are shooting in the dark, guessing at what could be blocking the start. - Nick at Pelican Parts  
selespeed Comments: this is puzzling...

i have the e36m42 april 1994 installed on my e30 manual. the engine fired up. but subsequent starting up does not fire up at first crank.

but here's the annoying part - the engine is LOSING POWER from 2500rpm onward. when accelerating hard, it tends to give a "diving" feeling as if there is some kind of vaccum. also, the engine exhibits noticebly rough when revving from 2500 rpm onward. the steering is shaking! tested when car is stationery

i have swapped the AFM with another good one and it is still showing similar problems. i can't see anything from diagnostics. once i stopped the engine, it takes more than one crank to restart engine.

can anyone help me?
August 2, 2013
  Followup from the Pelican Staff: Sounds like you have an engine misfire. I would isolate the misfire to spcific cylinders, then find out what is missing, ie: fuel, spark, compression. - Nick at Pelican Parts  
selespeed Comments: i have a problem... after swapping in a e36m42 manual e30 into my manual e30, the engine would not start - no spark no fuel. and the diagnosis failed to communicate - no connection. i am using a DME 1.7.2 BMW part# 1743250 or Bosch 261203590. according to the chassis #, this ECU comes from december 1994 automatic. whereas the engine is from april 1993 manual. what is the reason that it is unable to communicate and why it is unable to fire up engine? is it due to incompatible DME? how to solve this problem? i suspect it is the DME meant for automatic but i am not too certain.

if the problem is due to DME, would getting another DME of the year 1994 manual transmission solve the problem?

your advice is appreciated.

thanks.
teo
July 26, 2013
  Followup from the Pelican Staff: You're going to have to figure out what year the engine is from, then you can match the wiring harness to the correct DME. You could have a mismtached to the current DME, what this means is the pins or wiring could be different. The DME you have is applicabile:
(02/1994-01/1996)
BMW (E36) 318is Sedan 1.8 103 kW / 140 PS

(02/1994-02/1996)
BMW (E36) 318is Coupe 1.8 103 kW / 140 PS

(03/1994-01/1996)
BMW (E36) 318ti Compact 1.8 103 kW / 140 PS

Engine: M42 B18 / 184S1

- Nick at Pelican Parts
 
George kouts Comments: Hello I have an e30 1990 model bmw and a relay keeps clicking but cannot identify . I have a part no 90.943.01.439 -1.381496.2 it's a 6 pin relay and I live on Australia . Thanks for your assistance.
July 5, 2013
  Followup from the Pelican Staff: We need the location of the relay in the electrical box in order to identify the relay. - Nick at Pelican Parts  
McLovin Comments: Hi, I have a 86 BMW 325e. I was driving it, parked came out and it wont start, cranks over, timing is OK, fuel pump is A OK. No power to the coil though. This is my first BMW and fixing it is a bit different than my old chevys any help would be appreciated.
July 4, 2013
  Followup from the Pelican Staff: The ignition coil gets power from the ignition switch at pin 15. - Nick at Pelican Parts  
GMan Comments: I have a 325E that will start occasionally but for the most part it will not. i thought the timing belt was a little worn so that has replaced-issue remains the same. replaced coil, dist rotor n cap, new plugs n wires, reference sensor reads 970ohms speed sensor 915ohms within 960 +/-60 replaced DME a year ago for same issue, are these units this fragile? 261-200-027 can they be tested or is it swap and see? or is there more test that i can perform.
June 29, 2013
  Followup from the Pelican Staff: You didn't mention what the engine is missing when it will not start. When your engine doesn’t start you’ll want to check the basics. Check spark, fuel injector pulse and fuel pressure, volume and quality. Once you figure out what is missing, it will be easier to diagnose.
- Nick at Pelican Parts
 
neil Comments: Hi, my BMW 325i, year 2007 , va04152, has had its DME damaged due to water logging. Surprisingly I was holidaying and car was parked in the driveway. Seemingly due to a heavy shower the DME got damaged. I came to know only on my return when the car wouldnt start. Is it not a design fault of BMW to have not provided adequate draining for such eventuality? Why are us consumers made to suffer for these defects.
What am i to do now. The part no is 12147577970. than.
June 27, 2013
  Followup from the Pelican Staff: Your vehicle has drains and channels to redirect water. At times they may become dirty or overwhelmed. No fault to BMW. Give our parts specialists a call at 1-888-280-7799. They can help you find the right DME.
- Nick at Pelican Parts
 
Merc Burner Comments: Hi Wayne.
Thank you for providing the best, most informative site for Beemers on the net !
I have a BMW 525iSE, E34 M50 Automatic Saloon- registered in '92 but probably built in '91. VIN NO. : WBAHD62010BJ44309.
I am having problems with mis-firing with cylinder No. 4. I have changed all the spark plugs and the coils but it is still not firing correctly.
I brought the car to the main-stealers. They said the problem could be with the ECU.
The ECU is a Bosch Motronic Green Label No. : 0261200403. I have found a replacement second-hand ECU for sale locally but the label is red and the number is 0261200413- also from an automatic 525i saloon - probably built in '92.
Do you think this ECU is compatible and would it work in my car ? There is an immobiliser in my car but I am pretty sure it is an after-market part that was fitted with a newer alarm system.
Any advice you can give me would be greatly appreciated. Thanks.
June 24, 2013
  Followup from the Pelican Staff: I cannot find any information stating that DME will work if your vehicle. Give our parts specialists a call at 1-888-280-7799. They can help you find the right DME.
- Nick at Pelican Parts
 
CBE Comments: Hi, I have a e36 328i Siemens DME 1 429 373, can i have this replaced by a later model Siemens 1 429 402 or later? It's the same car & model, built a year apart.
June 20, 2013
  Followup from the Pelican Staff: I cannot find any information stating that DME will work if your vehicle. Give our parts specialists a call at 1-888-280-7799. They can help you find the right DME.
- Nick at Pelican Parts
 
Martin Comments: Hi my E36 wont start. I have swapped my 95 1.6 manual 4cyl engine to m50b25 from a 94 auto with the red label 413 dme the loom was converted to manual all the dme pins match up with the sensors and the sensors and coils seem fine with a continuity test even when cranking, It cranks fine and fuels fine there's just no spark.. I even took the coils off and checked the plugs by earthing them with a jump lead, this problems driving me mad. any help would be much apriciaated thanks :
June 19, 2013
  Followup from the Pelican Staff: When you say it fuels, you mean the fuel injectors are pulsing and spraying fuel? If so, check that the grounds and power supplies to the coils are good. If they are good and the DME has no fault codes, it may be faulty. It would also be a good idea to check the crankshaft position sensor signal to the DME. - Nick at Pelican Parts  
CBE Comments: Hi,

My ecu got water clogged and the maunual ecu's are a bit scarce, automatics on the other hand are plentyfull.

Will a e36 328i auto ecu work on a manual car?
June 15, 2013
  Followup from the Pelican Staff: No, it will not work correctly. You need a manual trans DME. - Nick at Pelican Parts  
Vanman 23 Comments: I have a 97 528i, replacing the automatic transmission range selection switch because all the insulation is coming off the wires and I fear a short. When I removed the switch I found 4 'extra' black wires that I have no idea what they are for. Any ideas? There are no missing or empty pins in the round connector that goes to the harness.
June 14, 2013
  Followup from the Pelican Staff: I looked att he wiring, it only shows 5 wires running to your switch, only one of which is black. The black wire turns to blue/black further down the harness, then splits to the EWS. The extra wires could be shielding or unused.- Nick at Pelican Parts  
Itzik99 Comments: Hey guys,
I've just swapped a M42 to my E30.
When I try to start the engine, there is cracking but there is no spark and the fuel pump is not working.
The crank sensor and canshaft are fine.
The ECU is working fine on another M42.
When cracking there is no signal from the DME to the fuel pump realy.
Another thing, we are using an automatic engine harness but the car was manual before.
We went trough every pin on the ECU and everything seems to work fine exept pin 64 which is not connected.

Any help would be helpful ;D

Thank you very much,
Itzik99
June 4, 2013
  Followup from the Pelican Staff: Not knowing your exact vehicle, i can offer a few tips.

The fuel pump relay gets power to the coil from the DME relay. Pin 3 at teh DME actiavtes the fuel pump relay. You want to be sure each terminal at the relay has the correct voltage. - Nick at Pelican Parts
 
struck in a bad way Comments: What is the correct solder mix to reseal connections
May 27, 2013
  Followup from the Pelican Staff: I use whatever my local electronics store has in stock. I'm sure if you search online the options are endless. Look for a rosin core or lead free. - Nick at Pelican Parts  
Stuck in a bad way Comments: HELP BMW 1997 318IS No power to fuel pump burn the brown wire from the fuel pump relay. Changed engine harness put in the orginal 4 pong relay for the fuel pump. Also changed fuses check for shorts. Had dianostics done no codes DME is fully commuicating with car. Last step buying new orginal borsch battery

I bought a used DME same 1997 BMW 318IS 5 speed transmission. Still the same results. I take the DME apart can see no damage to the boards.
May 26, 2013
  Followup from the Pelican Staff: Not 100% what you are asking. I think that the brown wire to the relay is burned?

The Brown / Green wire is the DME control circuit for the relay. It is gtounded by the DME to activate the relay. If you manually activate the relay, the vehicle should start, that is if the fuel pump relay is the only problem.

My suggesttion is to find the cause of the shorted (burned) wire, if you cannot locate the course, run a new wire. - Nick at Pelican Parts
 
e36man Comments: I am swaping a dme, when I put the programming chip from my old car into the new dme will I have to remate the EWS to the new DME through the dealer?
May 23, 2013
  Followup from the Pelican Staff: Yes, or a shop with the ability to so with a BMW scan tool. - Nick at Pelican Parts  
AmRacer Comments: Hi Pelican,

I have a US Spec 1997 M3. I just rebuilt the motor and re-installed it with stock DME that has EWS delete done. The car turns over with no problems but it is exhibiting fault codes for camshaft sensor, knock sensor cylinders #5-6 and Ignition Coil #5.

Im also done concluding that all of these are bogus codes and that something electrical is not happy. Ive swapped ignition coils with known working ones from other cylinders. Swapped ignition wiring harness. Swapped cam & knock sensors four times with ones that have been known to work. Also swapped main engine relay.

Also note that I cannot clear Camshaft or Knock Sensor codes. Im using a Peake Research Code reader. When codes are cleared the rest disappear but the cam & knock sensor codes remain permanently.

The car seems to run fine at 3-4K rpms and is very normal. When it gets down below 2K rpms it begins to sputter and occasionally will pop/misfire although no code is thrown for that. Car stalls if you dont give it gas. Granted I did a major job and all the work by myself I think its likely I may have connected something improperly or forgot to ground something. Also note it appears the car is running lean as the spark plugs have a minor amount of white residue. Also note that the car was throwing another code for CEL but the CEL was functioning properly. Another clue that has lead me to believe the codes are bogus. I pulled the DME and cleaned the pins with alcohol since reinstalling the DME that code has not shown up again.


Couple questions can misfires and irregular running trigger the camshaft sensor? Can faults within the body harness effect the DME? Like a missing wiper box module? I will be running some electrical tests shortly for voltage. I find it odd that having swapped about 16+ different parts that all worked perfectly when they were removed that all 16/16 are now mysteriously all duds.

Any advice or input would be greatly appreciated.
May 7, 2013
  Followup from the Pelican Staff: I would grab a wiring diagram for the engine and DME combination you installed. Cross reference the installed sensors against the specified pin numbers. Check the grounds using the wiring diagram too. You may have missing sensors the DME is expecting to see. Only way to know is to check the right wiring diagram. - Nick at Pelican Parts  
khaled Comments: hi a need to know what is the flow meter serial or number for a 318is but i dont know its year of made for the engine since i replaced my 316i motor so please can u help ??
April 2, 2013
  Followup from the Pelican Staff: Give our parts spcialists a call at 1-888-280-7799, they will be glad to help you locate the part number. - Nick at Pelican Parts  
M9hundo Comments: 1997 M3 sedan auto. Hello I'm getting a weird random clicking sound from underneath the car sort of like morse code. It sounds mechanical like an actuator or something. It goes on when the key is in the ready to start position an stays on when the car warms up. It goes away then will continue when driving. ASC, ABS and check engine lights are on. What scares me is that the engine cuts out when this happens while I'm driving. That noise will come on and the engine power will stutter. I've taken it to a specialist but they are unable to communicate with the computer. I gave them a 2nd hand ABS module but that did not work. I have another DME that I will take to them and see if that will help.
March 31, 2013
  Followup from the Pelican Staff: Start by performing a full scan of the control modules using a BMW scan tool. If theere are warning lights on, I suggest starting there.

If the specialist is unable to comminucate, this will be the first item to repair. The data bus has to be operational and a BMW sopecialist should be able to get it back online.- Nick at Pelican Parts
 
Tytyty Comments: My 89 BMW 735il won't start. No power to fuel pump and no spark. There is 11volts going in to coil and same coming out. Tried two different coils. If I bypass the fuel pump relay, the fuel pump will turn on. My dash says oil press sensor could that cause all this?
March 9, 2013
  Followup from the Pelican Staff: The main DME relay send power to the fuel pump and other engine components. Check operation of the main DME relay first. - Nick at Pelican Parts  
charles Comments: Hello Guys,
I have a Bmw e36 with DME Model Bosch 0 261 200 520 and after opening it so that i can repair it i found the big transistor to be faulty and unfortunately the Nos. on the transistor had been scrubbed off. Can any one email me the no. so that i can replace it. Thanks charles.
March 3, 2013
  Followup from the Pelican Staff: I added this to the Pelican forum to see if anyone can get that number for you. - Nick at Pelican Parts  
Tino Comments: Buenas.
Tengo un 735i e32 de 6Cilindros 1990. sistema EML
Tengo el ralenti inestable, comprobado, puesto nuevo y limpiado:
Tapa de distribución nueva
distribuidor nuevo
Bujias nuevas
Filtro de gasolina nuevo
Entradas de aire, admision sin fugas comprobado
sistema mariposa limpio circuito potenciometro limpio ok
Inyectores limpieza
caudalimetro puesto de otro vehículo comprobado
En la diagnosis da un error intermitente de Idle Speed Controlller Se borra con la diagnosis sin problema, pero aparece en unos dias otra vez. No consigo tener un ralentí estable, ya no se que mirar.
Hay posibilidad de que sean malas soldaduras en la ECU?
Muchas gracias.
3

Good.I have a 1990 6Cilindros e32 735i. System EMLI have unstable idle, checked, cleaned and new:Cover of new distributionNew DistributorNew spark plugsNew fuel filterAir, intake leak free entries foundButterfly system clean ok clean potentiometer circuitInjectors cleaningflow meter put another proven vehicleIn the diagnosis gives an intermittent error ID you Speed Controlller is deleted with the diagnosis without problem, but appears in a few days again. Can't have a stable idling, no longer has to look at.Is it possible that are bad welds in the ECU?
September 30, 2012
  Followup from the Pelican Staff:
A bad ECU is possible, but I would check engine vaccum and compression before condeming a control unit. A worn engine can have exhibit a rough idle.
- Nick at Pelican Parts
 
Red Comments: I have a 1984 745i and if I ease into the throttle under a load I can get pretty good rpm"s before it starts loosing power and popping. but if I press petal to the floor it immediately starts popping and stalling. I have replaced the fuel pump.
September 6, 2012
  Followup from the Pelican Staff: I would check the DME for fault codes using a BMW scan tool. Start with what code is stored. This will likely get you to the source of your problem.

if none are present, check engine timing and backpressure.- Nick at Pelican Parts
 
e30m3 Comments: I 95 m3 that won't start. I check for fuel and it pump and whine. No check engine light and no spark. It crank but will not start up. I check the main relay and it work fine.
August 6, 2012
  Followup from the Pelican Staff: You may have a faulty DME. The lack of check engine light is a good indicator.

Check all power and grounds to the DME before condemning it. - Nick at Pelican Parts
 
colby Comments: I would appreciate it if someone would provide me with a simple but complete dme pinout diagram for a 92 325i. thanks in advance
August 2, 2012
  Followup from the Pelican Staff: Your best bet is to grab a repair manual. Give our parts specialists a call: 1-888-280-7799 They will help you find the right one. - Nick at Pelican Parts  
ALEX Comments: hi i have a BMW 325ci 2006 and im having a problem with the engine will not start, only lit instrument panel and turn on the fuel pump
August 1, 2012
  Followup from the Pelican Staff: Check what you are missing when trying to start the engine.

Check for spark, fuel pressure and fuel injector pulse. Once you know what is preventing the engine from starting you can properly diagnose the problem. - Nick at Pelican Parts
 
delm Comments: Hi I want to properly fuel my motronic 1.0 basic N/A application for adding a supercharger 2 bar range ie -1 to +1. I have the spark control covered. Do you sell a solution for the fueling? we used to call these FMU's or 7th-injector systems.. but if you sell a program for modifying the prom parameters on that Motronic 1.0Basic, I'll take that please... otherwise consider this is presently a mass-flow type but I'm not above changing that if there's nothing simple to accomplish fueling while leaving it in place or bypassing part of the airflow around it making it a sampling type meter
July 12, 2012
  Followup from the Pelican Staff: There are a few DME upgrades you can make if I recall. Drop our sales department a call at 1-888-280-7799 and they can help figure out what you need. - Nick at Pelican Parts  
Bert Comments: I have a 1992 BMW 325i and it ran fine then had hard rain and wont fire and no fuel and I was wondering if it could possibly be my dme because on my dme relay I get no ground at connector 4 , if I get a used dme with the same part number do I have to get it coded ?
June 13, 2012
  Followup from the Pelican Staff: Inspect your E-box for signs of water intrusion. The rain may have something to do with your problem. If the fuel pump is not running, the DME relay not working could cause that. - Nick at Pelican Parts  
Alex Comments: Hello? My BMW 520I 1993 model moves for only 2 kilometers and then the engine starts loosing power and shuts down, but then restarts again after a minute but only moves another 2 kilometers before loosing power and shutting down. I did a diagnostics on it and it gave me an error 26 'voltage supply control'. Is there a way i can repair that or do i have to replace the ECU? My ECU P/N is 0 261 200 405.
Help please
June 4, 2012
  Followup from the Pelican Staff: This could be a fault with a power feed to the DME. Check all power and grounds to the DME before condemning it. - Nick at Pelican Parts  
Fred Comments: Help, my car won't start! Mechanic said it's the ECU, DO I HAVE TO GET A NEW ONE AND TAKE IT TO GET PROGRAMMED AT THE DEALER OR CAN I JUST BUY IT AND INSTALL IT???
April 30, 2012
  Followup from the Pelican Staff: I can't answer that question without knowing what vehicle you own. In general, at the minimum, BMW DMEs need to be coded and mated to the EWS. So I would assume it had to go to a shop with a BMW scan tool. - Nick at Pelican Parts  
xtc Comments: hi pelican staff.
im having a problem with my bmw 1996 318is coupe? i got the car with a faulty starter motor and ive replaced that. the car cranks over but will not start? ive had a diagnostic man out and theres no faults showing. i have spark and fuel. its sounds like its trying to start but seems like the timing is out? seems odd because the car drove fine when it was deliverd bumped started ive had the battery disconected due to it goin flat trying to start. could it be a dme fault? should i replace the dme,ignition, emo key ect.... any help would be brill. thx
sorry i forgot to mention that i cant find a dme with the exact same codes as ive got in my car at the moment? would a dme from another 318is e36 still fit and work even if the codes are slightly different? seems like the last 3 digets arent the same. im planning on changing the dme and ignition barrel and emo sensor parts as mine has been set up with a push start ignition. thx
April 29, 2012
  Followup from the Pelican Staff: Did you disconnect the battery when the starter was replaced? Is it possible you shorted the DME by accident?

I would try to get the same part number DME that is in your vehicle. - Nick at Pelican Parts
 
keith Comments: 97 M3 DME issues. If I got a DME and its immobilizer from a donor car, could it be programmed to utilize my current keys/tumbler?

thanks in advance.
April 26, 2012
  Followup from the Pelican Staff: No, the keys would have to be coded to the new modules. - Nick at Pelican Parts  
BrianMusick Comments: Hi Wayne. I hope you still read and reply to this tread. I ran my E30's 1989 325i coupe battery dead the other day playing music while I pulled apart the back end. I Jumped the battery the wrong way Battery to Battery. I hadn't yet read the article on proper Jumping practices. Now my fuel injectors aren't working and the 5 pump pedal trick doesn't work either. Pryor to "the jump" everything worked fine. Think I blew my DME?
April 6, 2012
  Followup from the Pelican Staff: If you connected the cables backward, you could have shorted the DME or just blew some fuses. I would check the fuses first. - Nick at Pelican Parts  
key36 Comments: I'm pretty sure the DME is going out on my '98 328ic. I did, however, check the relay and it was heavily corroded; after I replace it if the issue still exists, I'll replace the DME. However, my car does have the factory alarm with immobilization... what am I going to have to do to successfully swap the DME?
April 5, 2012
  Followup from the Pelican Staff: You'll need the correct DME. Then you will have to code it and program the EWS. - Nick at Pelican Parts  
ffmikeyd Comments: The other day i stopped to have my 1994 325I washed. After I drove away, my car starting bucking and stuttering. I replaced the DME and the car ran good for a couple of weeks. Then out of nowhere, it started acting up again. Took the DME out and also found a bunch of wires burnt. Spliced new wiring and put everything back together. The car still bucks and stutters if idling to long. Also have lost some power and it sounds like it is still missing. Replaced spark plugs but no changed. Temp shot all the exhaust manifolds and all where close to temp of each other. Im totally lost now.
April 4, 2012
  Followup from the Pelican Staff: Whatever shorted the wires may have damaged your DME again. First remedy the water intrusion problem. Then find the source of the short and repair what is needed. If the DME is still faulty, replace it.- Nick at Pelican Parts  
jinx Comments: parked my bmw E38 1995 740i by the shopping mall and when i came out it wouldn't start, the keys goes in and the dash lights up but it wont start the key, my mechanic says its my key thats dead, so now i need a new key, computer box and the ews. my chassis number is DF97737.
April 4, 2012
  Followup from the Pelican Staff: If you're looking to find parts, give our parts specialists a call: 1-888-280-7799
- Nick at Pelican Parts
 
Sgh1984 Comments: Hi can anyone help me I've got a m3 evo e36 when I'm getting to 4000 revs my car pull back like when u go into the red it should not be looseing that much power at 4000 revs please can anyone let me know what to do.....
April 1, 2012
  Followup from the Pelican Staff: You could have an engine misfire or a an engine knock, pulling timing back. Check the DME for fault codes. - Nick at Pelican Parts  
davone Comments: can you tell me where the starter is located on the 1991 bmw 850I
February 19, 2012
  Followup from the Pelican Staff: The starter is located on the passenger side, under the exhaust manifolds, mounted to the bell housing. You can service it from above. - Nick at Pelican Parts  
esam samao Comments: im work in workshop and i need information
February 10, 2012
  Followup from the Pelican Staff: Give our parts specialists a call and grab a repair manual: 1-888-280-7799
- Nick at Pelican Parts
 
dawson Comments: i have isolate my ecu with paper water proof its a good idea for humiditie probleme ?
February 9, 2012
  Followup from the Pelican Staff: No. I would seal the E-box lid and make sure the drain is clear. You can add some desiccant if needed. - Nick at Pelican Parts  
germany Comments: i had 95 bmw 525i m50 no spark and no gas at the injectorr//fuel pum is working i check the presure....
February 4, 2012
  Followup from the Pelican Staff: Is the DME ON? if so, check the crankshaft speed sensor. - Nick at Pelican Parts  
yusuf Comments: I have a bmw e90 325
The car is dropping revs at times, not completely cutting out. It sometimes over revs. Does not show any faults.At present the car does not start and the engine safety light is on.Could u help me to fix the problem.Thanks urgent.
January 30, 2012
  Followup from the Pelican Staff: I would start by checking the DME for fault codes. - Nick at Pelican Parts  
jtr Comments: I have a 1995 320iAustralia. I want to run a bosch DME instead of the Siemens MS40.1. Can i use a 325i harness and DME on my engine? Can i modify my loom somehow to use the bosch? Thanks.
January 29, 2012
  Followup from the Pelican Staff: No, the connectors would be different. I would swap the engine wiring harness also. - Nick at Pelican Parts  
Nick III Comments: I have a 1995 M3 and have a problem when I am accelerating hard in 1st and 2nd gear. We have found that when the rpms come up fast the motor does not run on #1 or #3 cyl. Have replaced all sensors except crank and cam sensors also all coils and #1 and #3 injectors and also fuel pump and mas air flow. Removed the DME and checked for cracked soder found nothing wrong. Checked fire on coils all good used a noid light to ck injectors firing. I put the stock chip back in the ecu same problem has new plugs. When acc. hard in 3rd and 4th gear to 7000 rpms car runs strong no problem with dropping cyls. When the cyl drop if I drive it normal motor starts running on all cyls. If I turn the motor off while its missing when I restart the miss is gone. Daily driver no problems if I drive normal. I do get all kinds of read outs in the car low water head lihgt brake system all system thow are fine. Parts I replaced came from Pelican so i know there good. Help.
January 26, 2012
  Followup from the Pelican Staff: You likely have an engine misfire that the DME is killing injectors because of. It will do this to prevent excess fuel from entering the cylinder in the event of the misfire. Locate the misfire and you will be able to repair the problem. - Nick at Pelican Parts  
Danial mada Comments: Hi, ive got my bmw E46 320i 4Drs model 1999 M52, ive goy EML & TCS warning light on. First my mechanic advice me to replace the throttle body , but still the engine won't rev more than 3000rpm. We swap the airflow meter with friend and still my car wont get well. Lastly my mechanic suspect that the ECU need to be replace. But im not happy as my mechanic didnt look 100% confident on it. Pls help me an i"ll appreciate it if you give me a suggestion on what should i do with my problem. Thanks again
January 25, 2012
  Followup from the Pelican Staff: are there fault codes present for the throttle body? Inspect the electrical connector at the throttle body. They can be troublesome. - Nick at Pelican Parts  
Esam Comments: kindly furnish me with pin configuration/wiring diagram for my ECU 0 261 203 330 used at my KIA Sportage 94. Bad electricians messed it up. No Coils firing.
January 23, 2012
  Followup from the Pelican Staff: You'll need a wiring diagram. Give our parts specialists a call 1-888-280-7799
- Nick at Pelican Parts
 
G Comments: Hi i have a 91 BMW 850i with 153,100 miles. Whenever i start the car, it smokes a lot from the muffler but does not overheat. After a while the car seems to be normal but the smoke is still over average and it has a funky smell. Also when i put my foot on the accelerator to give some gas to the car, it won't give me that roar or powersometimes not all the timeCan anybody help please?
January 19, 2012
  Followup from the Pelican Staff: What color is the smoke? This could be an oil burning issue or a beginning of a coolant leak. - Nick at Pelican Parts  
rewlt1 Comments: hi, i have a 2000 740i sport m62/5hp24. ive only had it a few months and it has 179k miles. a couple things, first, the ABS/DSC light has been on since shortly after i bought the car,,my SES light was on for bav auto scanner says 'steering angle sensor' and secondary air pump" i havent bothered to worry... now, if i push the car anything harder than 'normal' randomly i will have a 'trans fail' and all guages go dead and lose 50% power steering. shut off restart, NO SES light at all, and everythings fine again. battery tested 12.5v/13.6 loaded, im hearing thats too low and may be the problem. 2nd problem ive had since i had the car is the common "skip" or light 'surge/miss' at constant or very light acceleration about every 3-5 seconds. to me it feels like the computer and the torque converter arent in agreement with each other. if i use sport or manual steptronic mode, all is well because im under the impression those modes do not allow the TV to lock at all..is it safe to assume i have a bad TV? im going to start by fluid filtran filter change. also as part of the trans issue, it has actually slipped 3 times in 4 days,,one of those is when i lost guages/50% power steering. please help.
December 17, 2011
  Followup from the Pelican Staff: Address the fault codes that are stored, do not ignore them.

trans safe indicates a fault in your transmission. I would scan the DME and trans ecu and see what is stored. - Nick at Pelican Parts
 
spank Comments: I have a 91 525i. I puchased it with a motor change and harness from a 93 325is. The original computer ends in 405 but running the 413 that goes w/motor. Tried the 405 but No start It sounds like timing sequence cuz it backfires thru the thottle body. What else has to be changed if any or does something need to be reprogramed. spark,compression, fuel,timimg chain, vanos, and sensors and all are good.
December 17, 2011
  Followup from the Pelican Staff: I would probably run the older ECU - it sounds like there is some type of sensor or something that is not properly hooked up. Sorry, I'm not familiar enough with the electrics to give you wire-by-wire advice on this. - Wayne at Pelican Parts  
NRswimstar05 Comments: Hello Wayne,
This article has been very helpful. My 1994 325i convertible cowling drain got plugged and then wouldn't run when wet...you know the rest of the story. Used DMEs are cheap enough that I'm just going to buy one but my question is about the chip. I would like to switch to a performance chip mostly because of the gas mileage. Do I need to run the swapped DME with my stock chip before I switch or can I go straight to a Performance chip? Thank you.
December 15, 2011
  Followup from the Pelican Staff: I would get the stock DME working, then install the chip. This way if something is wrong, the puzzle has less pieces. - Nick at Pelican Parts  
jimmy Comments: my car 730i model 94 the transmission computr failure after chech found out of service and need to changed wher i can found bosch #0265 106 054 34.52-1 090 266 to replace pleas advise
December 14, 2011
  Followup from the Pelican Staff: give our parts specialists a call. they will help you locate the right part: 1-888-280-7799
- Nick at Pelican Parts
 
Max Comments: I have a '95 M3 4/95 production date with the DME 0 261 200 413 Bosch Motronic M3.3.1 w/ EWS-II that has failed. I need to know if I can replace it with a used DME, and once replaced if I'll have to recode it or swap any chips such as the EWS chip over from the old DMW. My dealer is telling me that due to EWS I have to purchase a new DME from BMW but after doing some research it sounds like they might be wrong on that. Any information you can provide would be very helpful. Thanks for your time.
December 13, 2011
  Followup from the Pelican Staff: I haven't had experience swapping EWS chips. The new DME will have to be coded and programmed with the EWS. - Nick at Pelican Parts  
woodywoods Comments: I just purchased a used 2003 BMW Z4 with only 53000mi. Its a clean machine and has purred like a kitten for the last two months when driving. However, last night I drove to the store. When I came out of the store and started it up, it just putted. When I stepped on the accelerator it seemed like no fuel was getting wh too the engine. Therefore, I had to coast all the way home with the car in drive. Along the way I continued to try to give it gas but the engine failed to respond, it just putted along in gear. I called my cousin who had worked for a BMW dealership for awhile. However, with the holidays, he can't make it over for a couple weeks. I can't wait that long. Can you help? The EML indicator just came on. Please tell me this will not cost an arm & leg, otherwise I will to wait for my cousin but I hate dealing with family for anything!
December 3, 2011
  Followup from the Pelican Staff: You may have a fault with the throttle body. Start by checking the DME for fault codes. - Nick at Pelican Parts  
zarou Comments: Sirs, I just bought a BMW 530i and after having it serviced new ABS Control unit, pads, water pump, etc it works fine except the radio and CD changer. The TV works but it has no sound. I read somewhere that if power is lost to the Radio/CD Changer then it has to be reprogrammed again. How do I do that? Thanks.
November 21, 2011
  Followup from the Pelican Staff: You may have a bad amplifier or radio. Power loss would not cause it to stop creating sound. You need a BMW scan tool to program them. - Nick at Pelican Parts  
bimmer525 Comments: hi i have a 98 model bmw 525tds e39 having trouble starting it.first the ecu compartment was flooded.so i have replaced the ecu with bosch:0 281 001 373 2 247 072were as mine is bosch:0 281 001 373 2 247 891reset the security system and tried starting it wouldnt start checked the fuel supply there is fuel going to the pump but not to the injectors.what would be the problem checked even the relays they work fine.Any solution?
November 1, 2011
  Followup from the Pelican Staff: Check if the fuel cut solenoid is being activated. It is located at the back of the pump if I remember correctly. Having only discussed these systems not having them in the US. - Nick at Pelican Parts  
Bluehawk141 Comments: I am having DME issues and have a 1994 318I with the 261-203-357 DME, can I switch it with a 261-203-282 DME? if I find another 261-203-357 DME will I need to switch my computer chip, or can I plug it in and expect it to run?

PS: I would appreciate a response from anyone what can answer the question asap!!!! Thanks
October 24, 2011
  Followup from the Pelican Staff: If you buy the same part number DME, no chips will have to be swapped. It may have to be coded and programmed using a BMW scan tool. - Nick at Pelican Parts  
Maurice Comments: Hi, 2003 BMW 325i wont start. No cranking only clicking noises which continue after car turned off for a few seconds. EML light and yellow circle/triangle lamps come on. Lights radio, all electronics work fine.
October 15, 2011
  Followup from the Pelican Staff: Sounds like your battery is discharged. You can either charge it or replace it, then test your charging system. - Nick at Pelican Parts  
Mikej2104 Comments: hi,I have an E36 320i 1994 sedan, it's giving me trouble starting when cold, After a couple of tries, it starts but you can feel the engine weak and shaking for at least 15 minutes until it's warm. but nothing will change unless I switch the engine off and on again, after that the car runs as smoothly as new. this problem only happens overnight or atleast more than 9 hours with the engine off. can somebody please help me? I took it to some mechanics but they just charged me $2000 and could not find the problem. after that I took the car to bmw canterbury and they changed the crack angle sensor for $600 but it just worked for 2 days, then back to tha same problem. then they sayed that the Ecu taht the other mechanics put in the car doesn't belong to this car. I don't want to go back to the same place where I payd $2000 without any improvement.
September 26, 2011
  Followup from the Pelican Staff: If BMW says you have the wrong DME in your vehicle, I would deal with that immediately. The shop that put it in should honor the part and install the correct one. - Nick at Pelican Parts  
Iqes Comments: Hi my name is Iqbal 4rm Maxdb-music power car audio&security in S.A. I have a 1989 e34 535i 511550 km with a 292' hartge cam + 18mm eccentrics + chip logic chip fitted +_ 12yrs ago + modified AMS + k&n airfilter. I am having the fflg problems.
1. What is the correct tappet setting? I have set it to 0.25 mm. Will that cause a loss of power?
2. Takes very long 2 start after being driven & parked 4 a short while.
3. How do i test the blue cold start switch replaced 2months ago.
4. How do i test & adjust the throttle body switch 3pin
5. What else can i test?
6. Oil pressure warning keeps coming on but pump seems 2 b fine. fitted new pressure sw no difference. Mostly on the slightest incline. When the warning light does come on i can hear a slight noise 4rm around the computer box & the small fan runs. We did have a blockage in the return value which was caused by a cracked head after breaking a rocker btw 3rd rocker in 5 months caused by incorrect material used on the eccentrics which was 2 soft although it was case hardened. Also causing motor 2 smoke because the wrong size eccentrics was used 22mm
7. Intermittent miss when engine warms up clears mostly at higher rpm. Have cleaned out ignition/fuel pump relay + all contacts + contacts on computer box + contacts on injectors etc. Replaced distributor cap. Replaced earth strap 2 motor. Fuel pump 4rm pumprite is 12months old.
8. Car seems 2 be very underpowered yet in the past was very strong with a 280 ' racing dynamic camshaft.
9. Using original 3.0 bar fuel pressure regulator which was modified by chip logic with the 280' cam +_ 12yrs ago.
10. Intermittent 'check control' warning comes on.
11. How can i service the idle stabilizer? I have tried soaking it into petrol & then lubricating it with würth WS 5 Spray.
12. I have replaced looms under the inlet manifold.
13. Had the motor completely overhauled around 425000 km including replacing the camshaft with 292' Imtech motors.
Will appreciate any input to overcome these problems.
my email add iqes@vodamail.co.za
September 19, 2011
  Followup from the Pelican Staff: Sounds like you replaced a lot of parts. I would check engine basics. Spark, fuel pressure and compression. - Nick at Pelican Parts  
b town Comments: i have a bmw e36 with a m40 and i converted it to a m42 . the m42 i have a computer wich i plugged in and it plus in to te wiring harness but car wont start and doesnt even have reds what do i have to do?
September 14, 2011
  Followup from the Pelican Staff: Check the DME for fault codes. Engine start may be blocked by EWS. - Nick at Pelican Parts  
Rainey Comments: What is the difference between a manual and automatic DME 318ic?
September 3, 2011
  Followup from the Pelican Staff: DME coding for the specific transmission. - Nick at Pelican Parts  
frank the tank Comments: my 1988 325i has no power at the fuel pump fuse. i used a jumper wire to give power to the fuel pump but the cars still do not crank. i replace the crank senson and test all voltage points that i could find. i think it may be the ECU.
August 30, 2011
  Followup from the Pelican Staff: Check operation of the DME relay. - Nick at Pelican Parts  
wavell5er Comments: am having problem with my 88 535is stk.am not getting spark and no power to the relay wire that turn the pump on. i change just about everthing in the past 5 years.my last attemp is that i change 5 cpu and one went crazy turn the pump on when the keys is in the on position and will not stop.my only thought is the ground wire inside the harness is comming lose were the cpu is conneted? is that normal.i
August 28, 2011
  Followup from the Pelican Staff: If the fuel pump relay runs when the key is in the On position, this indicates the DME is is holding the relay on or there is a short to ground in the relay control circuit. Check pin 20 at the DME, this is the circuit that control the fuel pump relay. It normally sends a ground to the relay to activate it.- Nick at Pelican Parts  
mikennedy2282 Comments: Bought a 1984 533i that doesn't start. Am troubleshhooting and found that the wire that goes from terminal 85 on the fuel pump relay to terminal 20 on the motronic 1.0 has battery voltage. I am thinking it should be grounded because that's how those relays work. I switched relays, no luck. I turned the starter, no luck. Is the motronic messed up sending voltage to terminal 85 on the relay???
August 26, 2011
  Followup from the Pelican Staff: You are correct, then trying to start the engine or the engine when the engine is running, the DME grounds this wire to activate the fuel pump relay. I would manually activate the relay and see if the vehicle runs. If so, diagnose the problem on that circuit. - Nick at Pelican Parts  
Joammo Comments: Hello, I just replaced my DME last night and the car was running, it was idling up and down like crazy but it was running. I go out today to start it and she's dead again, no spark at the coil. What are the odd I was unlucky enough to get a DME out of a car on it's last leg? Is there something in the car that could be causing the DME to burn up if it is the DME this time?
August 17, 2011
  Followup from the Pelican Staff: it is possbiel the DME you just installed was faulty.

Before installing another, check that there are no shorted DME outputs. If an output is shorted, it can damage the DME. - Nick at Pelican Parts
 
Fred Comments: I have a 2000 528IT wagon. have had it for two years. It is a california car and had 60,000 on it when i got it. It has 97,000 on it now. It has run good and is maintained very well. This past month after the 100,000 mile service, oil change etc code lights started appearing. ABS, Traction control. My good German mechanic checked and found codes on his scanner. He recommended sensors be replace. After those were replaced and another 300.00 with the 600.00 for the 100,000 mile service the lights came back. He says that he is not showing any codes, but i wonder. He also says that the ECU may be bad..... Any thoughts? new BMW owner.
August 17, 2011
  Followup from the Pelican Staff: If multiple lights are on, choose one and try to find out why. A warning light being on usually indicates a fault in the system, and a stored fault code. Use a BMW scan tool to perform a system test and read out system faults. Your mechnic's scan tool may not be able to access the codes that are stored, depending on the type of scan tool he is using. - Nick at Pelican Parts  
michalg Comments: HI
I have 525i 92,dme motronic 0 261 200 402, car dosn't start. I change dme to 0261 200 403, then car stated but its work's very poor. Maybe i must buy 402 dme becouse 403 is not good for my engine? Please help
July 19, 2011
  Followup from the Pelican Staff: The following DME part numbers should work for your vehicle: 0 261 200 402, 12 14 1 735 614,
12 14 1 740 234, 12 14 1 740 247,
12 14 1 740 253, 12 14 1 740 354,
12 14 1 744 859, 12 14 1 744 859.2,
12 14 1 744 861, 12 14 1 748 037,
12 14 1 748 401- Nick at Pelican Parts
 
help Comments: i'm having problem with my 92 325i the fail codes are coming back every sensor is is bad i replaced all and still saying bad it runs rich about back fires to about 2,500 rpms then cleans up to about 4,000 rpms then lean
July 13, 2011
  Followup from the Pelican Staff: Assuming you are referring to an oxygen sensor.

The sensor may be stuck rich or rich because the exhaust gas is actually rich. I would check that the oxygen sensor can react to changes in the exhaust. If it does, check the componenets that can create a rich exhaust. ie< fuel pressure, fuel injectors. - Nick at Pelican Parts
 
beemer luv1 Comments: i have a 325i e36 1992 model,it is fitted with group-Ncams,Branches of an M3,a uniQ chip,my dme with code 0261200403 could not start the car so ive changed it to a 0261200402 and so it started all well removed the uniQ chip but now the car runs poorly,can i replaced the dme with a 0261200405 with the uniQchip to better the performence please please reply as im running out of optionsthe original dme was the 0261200403
June 28, 2011
  Followup from the Pelican Staff: I'm pretty sure a 402 and 403 are not compatible. You'll want to use a DME that will work with the original one that came out. Once you get the vehicle running well, install the chip.- Nick at Pelican Parts  
DSP543GP Comments: Hi Wayne
My 320i 95 model obd1, car cranks but doesn't have spark,fue in the fuel raill, no power at fuel fuse. I changed the crank and cam sensors, still no luck, my dme is siemens ms40. Dme is dry with water traces but used wd40 to clean the dme stil no luck. The fuel is ok even the relays. Could it be the ews2 or faulty dme? Any idea how to open siemens dme and remove the ews2 chip? How much is the obd1 code reader and shipping to south africa, pta. Tnx
June 21, 2011
  Followup from the Pelican Staff: How did you check fuel pressure? There may be fuel present in the fuel rail and still have no pressure or volume. I am mentioning this because if the fuel pump fuse has to now poer, the fuel pump is not running. I would check the fuel pump circuit and see if the fuel pump is turning on. - Nick at Pelican Parts  
tuba tuba Comments: A BMW dealer diagnosed a bad DME in my 93 325is. They said if I replaced it myself, I should then bring it to the dealer to code the DME to the car. Would it still need to be coded if I move the chip from the old unit to the replacement unit?
June 16, 2011
  Followup from the Pelican Staff: If working with a new DME, I would have it coded. You will have better piece of mind without old parts in a new DME. - Nick at Pelican Parts  
Nir Comments: Hi Wayne. I an E36 M3 Euro with a bad DME 0261203075 and I'm trying to find a used one to replace it. I see that some BMW models 530i, 540i, 740i, 840i are useing the same Motronic M3.3 part number 0261200204. Do you know if I can use the DME unit from these cars with my Chip? Do they have the same connector?
Thanks in advance,


Edit messege. Made a mistake with part number earlierHi Wayne. I have an E36 M3 Euro with a bad DME 0261203075 and I'm trying to find a used one to replace it. I see that some BMW models 530i, 540i, 740i, 840i are useing the same Motronic M3.3 part number 0261200404. Do you know if I can use the DME unit from these cars with my Chip? Do they have the same connector?
June 15, 2011
  Followup from the Pelican Staff: 3.3 should be the same connector as 3. You will have to confirm this.

I am having a hrd time finding information on your part number. Likely because it is a euro DME. Before buying anything, do your homework to make the sure the part will fit. - Nick at Pelican Parts
 
tlievens Comments: Hey Pelican Staff! I have a '96 328is. Car is running rough to put it mildly, it has difficulty idleing and even runs inconsistent when cruising, say 2nd or 3rd gear 2k rpm. Will fluctuate and buck. Tried replacing TPS, no result. I checked code and said fuel/air ratio which autozone told me was probably fuel pressure regulator. Car will pull great through the RPM band but is inconsistent cruising and idleing. Is the regulator the place to start next? Or do I check my DME relay?
June 5, 2011
  Followup from the Pelican Staff: If you have a fuel trim fault code, (as stated in question) addressing it will likely fix your issue.

The code should give you information when it set. You could have a vacuum or unmetered air leak. If you do not have access to a BMW scan tool, this will be a difficult one to diagnose.- Nick at Pelican Parts
 
Scott Comments: Although I had no faults related to my DME, replacing my DME Relay solved a frustrating problem I was having with engine knock. I don’t understand the causation but it worked perfectly, and saved me a lot of money. Many thanks to Wayne for mentioning this, as I never heard it anywhere else.

My 1994 325i was knocking. This knocking occurred mostly when one would expect; while accelerating in higher gears at lower RPM’s, say between1800-2800 RPM, and typically on a hot day when the engine was fully warmed up. I live in Atlanta, so on a 90+ degree day I was not so surprised. My engine has 150K miles, lots of it around town, so I suspected I had some carbon build-up too. The only fault code was on my knock sensors, so at first I thought my knock sensors were bad. But on further inspection I determined that the knock sensors were working properly, i.e., they were accurately detecting a knock. The problem was that the DME was not retarding the timing properly. Thus I was looking at a DME replacement, which is an expensive part. While reading Wayne’s article, and his mention of replacing the DME Relay, I thought I’d give it a try as a long shot. To my surprise it worked, and only cost $13. Plus, the engine just seems to accelerate much smoother than before and my gas mileage has improved. I’ve been testing my fault codes every day for weeks now and my knock sensor fault code has not reappeared.

Thank you Wayne!!
June 4, 2011
  Followup from the Pelican Staff: Thanks for the feedback. Glad we could help. - Nick at Pelican Parts  
866 Comments: can a 325i e36 DME fit in a 525i e34 both DME codes are BOSCH 0261200413 they look the same IS IT POSSIBLE PLEASE REPLY
June 4, 2011
  Followup from the Pelican Staff: If the part number is the same it should work. - Nick at Pelican Parts  
easy yas Comments: ihave a bmw 318i the chip which was in the key got lost and the car does not start what is the problem can it be fixed or what can be done.
June 3, 2011
  Followup from the Pelican Staff: I'm not sure what you mean by lost.

You could have a problem with your EWS system. Check the vehicle for fault codes, perform a full system scan using a BMW scan tool. - Nick at Pelican Parts
 
enzo1984 Comments: I need to replace the ecu in e36 318is coupe manual coz its beyond repairable, and to avoid coding it with the car i decided to get set of locks and keys, ews with ecu from car exactly like mine. Fount loads but with the automatic gear box. Question is would it fit with my manual?
May 23, 2011
  Followup from the Pelican Staff: The auto DME is not the same as a mnual one. You would have to have it coded at the minimum. If the part numbers are the same, coding will work. Then you won't the keys and other parts. - Nick at Pelican Parts  
Herman 1991 Comments: Problem: car stalls when you slow down or come to stop light....then hard to start and keep going after that. Just purchased a 1991 318ic. check engine light said 1215 mass air flow sensor, replaced it, also replaced motronic ECU computer. What's next to check or fix?
May 15, 2011
  Followup from the Pelican Staff: You could have a faulty camshaft position sensor. Check ignition spark and fuel injector pulse when the problem is present. - Nick at Pelican Parts  
mharlan Comments: If check engine light does not come on and you have comfirmed the bulb is good and car is running very rich, can one assume the control unit is bad. I have also check the relay and it is working properly.
May 13, 2011
  Followup from the Pelican Staff: Depends on when you expect the check engine light to be on.

The check engine light should illuminate for a moment when starting the vehciel, bulb check. Then it will illuminate when a fault codes is present. You can have a rich condition without a fault code. It all depends of the DME can see that the system is rich. - Nick at Pelican Parts
 
95 m3 Comments: i have an e36 m3 and have a check engine light on and it says it is due to low voltage to ECU, bought a new battery and did not help?
May 11, 2011
  Followup from the Pelican Staff: What is the fault code number?

Low voltage code could be due to a low imput voltage to the DME. Either a constant, swithced or relay fed. - Nick at Pelican Parts
 
steve Comments: Hi. Steve again. Found problem. Intermittant battery supply from ignition switch to connector under fuse box in engine bay. This battery supply fed brake lights, immobiliser etc.
Thanks, Steve
May 6, 2011
  Followup from the Pelican Staff: Thanks for the follow up. Glad you got it fixed. - Nick at Pelican Parts  
Steve Comments: Hi, Congratulations on an awsome and informative site.
Would appreciate any advice on following problem:'95 318is 2 door, M42,5sp. When driving, fuel and temp gauges suddenly read zero and brake lights not working. Engine continues running until turned off. When key inserted and tried to restart, the starter does not operate/will not crank engine, temp and fuel gauges read zero, all other warning lights, service indicator, etc work OK, all light up then go out as normal. Leave car for a period 10 minutes - 1 day, then restarts ok only to have above fault return.
New Battery and volts ok.
Does Pelican sell diagnostic hardware/ software or only spares?
Thanks, Steve
May 3, 2011
  Followup from the Pelican Staff: Thanks for the follow up. I am posting your reply here:


Hi. Steve again. Found problem. Intermittant battery supply from ignition switch to connector under fuse box in engine bay. This battery supply fed brake lights, immobiliser etc. Thanks, Steve
- Nick at Pelican Parts
 
mo Comments: hi ive got a bmw e38 728i 1996,it starts up fine,after 5mins car will cut out,it will not start only keeps cranking any suggestions thanks
April 24, 2011
  Followup from the Pelican Staff: If your engine doesn’t start you’ll want to check the basics. Check spark, fuel injector pulse and fuel pressure, volume and quality. Once you figure out what is missing, it will be easier to diagnose. - Nick at Pelican Parts  
sic325i Comments: I have a 1994 Bmw 325i. I bought it from a friend because it wouldnt start. I began to think it was the fuel pump, but when i purchased a aftermarket one just to get it going no power! Ran a jumper to stock fuel pump and guess what they work. Now the car will turn over but will not fire. I have heard it could be my dme, Crank or cam sensor. I really need to know because i am ready to go buy all three but if it will not fix it it is useless. I removed dme and no wanter just some leaves. What could be my issue???
April 21, 2011
  Followup from the Pelican Staff: If your engine doesn’t start you’ll want to check the basics. Check spark, fuel injector pulse and fuel pressure, volume and quality. Once you figure out what is missing, it will be easier to diagnose.

The fuel pump may not be getting power when you are starting the engine. IF the fuel pump is not getting power, check the DME and fuel pump relays. - Nick at Pelican Parts
 
jonnylopez25 Comments: hi i just took my 92 bmw 325is 5 speed manual thru the car wash and unfortunately it suffered a bad fate of getting drowned i let it sit over night and it starts up and will idle fine for 5 ten mins then starts jumping around and cutting out and then eventually dies. Do i need a new dme and if so can i use one from any e36 model? and does it matter if its a 5 speed or auto?
April 20, 2011
  Followup from the Pelican Staff: Before blaming the DME, check that it was exposed to water fromt he car wash. if it was and is faulty, be sure to use a DME with the same part number. - Nick at Pelican Parts  
Charles Ramos Comments: hello, I really liked what I read and I also need help, I have an ecu bmw325i of 1995, is a DME BOSCH 0261200413, the problem is in the ECU to idle it fluctuates between 200 and 2000 rpm, could you help me? Thanks! My name is Charles Ramos
April 20, 2011
  Followup from the Pelican Staff: Before replacing your DME, check the syste4m for fault codes using a BMW scan tool. Also, check that the engine does not have any vacuum leaks. A vacuum leak could cause the engine idle to hunt, as the DME is trying to control the idle and cannot. - Nick at Pelican Parts  
Rico Comments: Have 1995 M3 Production date 9/95. Car hydroloc.Diag that DME GREY STICKER 413failed.Due to water in DME Compartment.Would any Grey Sticker 413 DME work as replacement since it has EWS II.Where is code EWS II code stored in Eprom Chip. Can I just change Eprom Chip from old DME to replacement used DME.Or Will I have to take to dealer to code DME and then align EWS II and DME.
April 19, 2011
  Followup from the Pelican Staff: When replacing your DME, you'll want to find one with the same part number. Once replaced, you will have to code the new DME and program the EWS system. - Nick at Pelican Parts  
Haed Comments: Thanks for the reply, but got it all fixed up. Turned out to be a blown transistor inside the ECU that drives the coilpack, got a donated brain and switched out the bad transistor, replaced the coilpack and voila.. All sorted.
April 18, 2011
  Followup from the Pelican Staff: Cool, glad it worked out! - Wayne at Pelican Parts  
Haed Comments: Hey Wayne, great write-up.

I recently got given a 1995 BMW 316 Compact. The problem is that it is only firing on 3 cylinders. I noticed the coil pack is cracked and bulging at #4. I got a 2nd hand pack and fitted it and within a few seconds it also cracked and began to melt at #4.
I checked Autodata and traced the supply fault to one of 4 transistors inside the ECU. My issue is that it has random ID numbers and no manufacturer identification. Any idea where I would be able to find an alternative replacement to fit or am I best going for an ECU?
If I just go ahead and get an ECU do I need to get the key, ignition, immo unit etc or can I get away with just the ECU as it is an early-ish model?
Thanks.
April 12, 2011
  Followup from the Pelican Staff: It does sound like a troublesome ECU. If you have an immobilizer, then you need to have the immobilizer, key and ECU all matching. I'm not sure when the cutoff was though, and your 316 was never sold here in the states, so I'm not sure about that particular model either. You might be able to give your local BMW dealer a call with the VIN and ask them? - Wayne at Pelican Parts  
big will Comments: hey guys i have 2000 bmw 328i. first i've changed the spark plugs, air mass flow sensor, fuel filter, and camshaft sensor. i took it to another repair shop after all of this was changed, and he ran a diagnostic test and this is what it said: 233 cce bank 1, 033 fic 2, 001 fic 6, 002 fic 4, 210 icm more tha 2 cylinders fault, 029 fic 1, 031 fic 5, 030 fic 3, 065 inlet camshaft sensor, 209 anti tampering. my problem is that my car stalls out after about 20 to 25 mins of driving. this happens without any warning, on freeway or city driving! the new mechanic said i may need a dme control unit. is it possible this could be my problem? someone please respond $1600 is what he's charging and i would like some more advise before i spend that much. thanks in advance!!!
April 11, 2011
  Followup from the Pelican Staff: That's a lot of error codes. More than can be diagnosed over the Internet! However, before you replace your DME, try checking out the wire harness, and in particular the connector that mates to it. Sometimes these can get wet and start to corrode, which interferes with the whole operation of the fuel injection system. In fact, I would guess it's something like this. When DMEs fail, they tend to fail outright and are completely dead (paperweights). When you have quirky problems like these, I suspect the wire harness or connector might be at fault. - Wayne at Pelican Parts  
mael_miqui@hotmail.com Comments: I have troubleshooting with this part, do you now wat it is?? and how its works?? please, BMW M3 E36 1995 US version ECU 0 261 200 413
April 10, 2011
  Followup from the Pelican Staff: That's the DME. Oh wait, I see you're pointing in the photo to a part on the board. I can't really see what that is. Those DMEs are so common, that you can find replacements on eBay for $5. I think I have a box of about 15 of them I bought for $100. I would suggest just trying to find a used one. You can also find a used one that uses the same version of the board, and simply swap the programming chip (shown in the photo with the label peeling off). This is a common practice with the Porsches (you can swap a BMW DME into a 911 Carrera pretty painlessly, if you have the right part numbers and connector matchups). - Wayne at Pelican Parts  
Nick Comments: 1997 BMW 540I What kind software do i need to program DME to Ignition?
April 9, 2011
  Followup from the Pelican Staff: Sorry, I have no clue as to what you're asking here? - Wayne at Pelican Parts  
E24 heaven Comments: Hello There! I have a 85 E24 and I need to reprogram the Key Fob as the battery died. Do you happen to know how to do this? Thanks!
April 5, 2011
  Followup from the Pelican Staff: I'm not sure if the alarm systems were factory issued back then. You might want to check out my article on programming alarms here: http://www.pelicanparts.com/bmw/techarticles/101-Projects-92-Alarm-Install/101-Projects-92-Alarm-Install.htm - Wayne at Pelican Parts  
Sunny Comments: Hello, my 1987 325 quit the other nigth on the highway. The engine turns over but nothing happens. The main relay does energize when I turn the key on but the fuel pump relays do not energize when I turn the key on. I popped covers off of them and manually operate them and the fuel pump comes on. Also, I can't get any codes to come out doing the pedal pump. I think the DME is bad but want your thoughts before I buy another one. It has a Motronic 0 261 200 0027 in it.
March 29, 2011
  Followup from the Pelican Staff: Yes, it could be the DME, but the fuel pump shouldn't turn on unless the engine senses airflow, which means it could also be something with the airflow or another sensor. It might be cheaper to look at the airflow sensor, or the crankshaft sensor first, as those are cheaper to replace. - Wayne at Pelican Parts  
rickysingh Comments: Hi there. I have a 1988 BMW 325i E30 and the ABS light is showing. I think the ABS computer is fried. I've got the part number 0 261 200 380. Can I use any other ABS unit from other years and if so what other part numbers should I be looking for?
Cheers
Ricky
March 25, 2011
  Followup from the Pelican Staff: ABS systems can be troublesome, particularly on early cars. I think that might have been the first year for that system, so all bets are off. I would try bleeding the whole system first, and then testing it, prior to replacing the computer. The bad news is that the older cars like yours also don't have the integrated computers to help tell you what is wrong. - Wayne at Pelican Parts  
Troels Comments: Just wanted to add: 413 VANOS ECU's come in 2 flavors:

Maroon label, and silver label. The first is without EWS, while the latter is with immobilizer.

Maroon label ECUs will always work even if the car is born with silver label ECU / immobilizer.

Troels, Denmark
March 20, 2011
  Followup from the Pelican Staff: Thanks for the information, we appreciate it. - Nick at Pelican Parts  
Alec Comments: Hello there! I own a 1985 Euro M635 with the M88 engine. The ECU is failing again and I'm getting tired of fixing. Since they are pretty hard to find, I am getting more interested in swapping the chip to another ECU. My ECU has the Motronic 1.0 Motorsport chip. When you say the ECU must have the same Motronic version you refer to this right?

So technically an E30 M3 ECU might work if I swap the chip?
Any idea of compatible units that I might look around on eBay?

I appreciate your help.


March 17, 2011
  Followup from the Pelican Staff: I don't have any specific input for your particular Euro car, but the BOSCH ECU units are mostly the same, with the exception of the chip, when you have the same version of Motronic (as you asked above). So, if you get the same ECU but use a different chip, then you should be fine. I would guess that the ECU from a same-year 5-Series might work fine. - Wayne at Pelican Parts  
mudmonkey Comments: Hello, Just stumbled upon this fab site. We have a e36 318i 1996, and have no current to cylinder 3, all checks done so assume that the ecu is faulty. Any ideas about the best way to go about this?
March 17, 2011
  Followup from the Pelican Staff: Before you replace your ECU, be sure that you trace back the wires and double-check to make sure that your wiring harness is not faulty. A broken or damaged wire can result in the types of issues that you're experiencing here. - Wayne at Pelican Parts  
George Comments: I own a 1994 325i E36 sedan. I am having a very difficult time resolving a rough idling problem. I have replaced the idle control valve, plugs, mass air sensor, fuel filter and fuel pressure regulator. I have checked the throttle control and injectors. I have just had a smoke test performed and all vacuum leaks have been eliminated. The last shop that worked on the car thinks it's the DME. Do you have an opinion? If I do replace the DME in this 1994 325i do I only need to know that the replacement has a red label with the same part number 0 261 200 413? Should I transfer the original, stock chip to the replacement DME?
Thanks
March 15, 2011
  Followup from the Pelican Staff: It might be the DME - you also might want to check the wire harness. If you do swap the DME, make sure that your car doesn't need a new immobilizer too - right around 1994 or so, BMW put in the immobilizer system which is related to a chip in the key, and must be coded specifically to the DME. - Wayne at Pelican Parts  
Anderson_318 Comments: I have 92 318is. I have to push gas to start and when i do get it started on cold morning the idle fluctuates up and down. idle is barely over 500rpms. also when i cut fan on or cut healights on it sometimes kills motor. Any suggestions. I have question on ecu? are all chips soldered into ecu 990 or do they have other types like plug n? I have performance chip and didnt want to go through all that
March 10, 2011
  Followup from the Pelican Staff: I'm pretty sure your 1992 has a plug-in socket for the chip, but that was the first year, and there are a few things different on your car, so I'm not 100% sure. As for the other problem you're having, I would guess it's a vacuum leak. You might want to check out my article on vacuum leaks here: http://www.pelicanparts.com/techarticles/Boxster_Tech/21-FUEL-Vacuum_Leaks/21-FUEL-Vacuum_Leaks.htm - Wayne at Pelican Parts  
kathryn Comments: Hi, I have 2000 328i, e46. I have been having problems with it for a while now. The car goes into safe mode while the lights are on and recently I started getting tranny light on too. At those times it would hesitate to start. It cranks but doesn't start. Starting in neutral does it sometimes. It got dsc, eml and check engine light on. Diagnosis revealed throttle problem, bad dsc sensor, misfiring in cyl 1. Got dsc sensor and throttle replaced. The lights are still on and it looks like there is miscommunication on the DME part. Wiring and voltage checked ok. DME relay was replaced and the problem is not fixed. Someone suggested replacing the DME. I know it's really expensive. Can I get a used one and recode it or it requires a brand new DME and engine harness? Thanks a lot!
March 9, 2011
  Followup from the Pelican Staff: Problems like these are nearly impossible to diagnose over the Internet. However, I will give you this tip - check the wire harness and connections from the DME to the sensors, prior to replacing the DME. If the harness is broken or damaged, then it will generate issues and problems similar to what you're seeing here. - Wayne at Pelican Parts  
kaiser Comments: I replaced the DME of my e36 316i with a DME from Z3. It is working but the problem is the increase fuel consumption 6km/l from 9km/l. I have it diagnosed and the mechanic told me that my new DME has O2 sensor whereas the car doesn't have. Is their any way to disable the DME's O2, or any other alternative? thank you.
March 5, 2011
  Followup from the Pelican Staff: I don't think there's much that you can do there, except maybe run a cable from the DME to the exhaust and wire in your own O2 sensor. You'll have to also well / drill a port in your exhaust to fit the sensor. Seems complicated, but I'm pretty sure it would be doable (or maybe get an exhaust from a car that had O2 sensors)? - Wayne at Pelican Parts  
Jay Comments: Hi wonder if u could help I have just put a 2.5 non vanos that came out a 92 coupe and put in a 94 316 compact but have trouble gettin it started it cranks and got fuel but no spark ? Can u help is this a ews problem ? Cheers
March 2, 2011
  Followup from the Pelican Staff: If you swapped the DME and didn't swap out the EWS / immobilizer parts, then the car will not start (if it has that alarm installed). I think it won't even crank though if it's an EWS issue - sounds like a crank angle sensor or something like that is disconnected - try seeing if it is pushing out any fault codes? - Wayne at Pelican Parts  
Tim Comments: have a 1997 z3 4 cyl standard trans. Will not start. Getting voltage out of the egn. switch. Can not even get the starter to turn over. Tried pushing car with egn. switch on but seems no voltage is even going to the coil or anything. Tried checking the clutch switch, the one on the bottom with the clutch all the way to the floor. Hard to check that switch though.It works with a magnet moving across chips, could not test for no. or nc.
With the key out and egn. switch off a oil change overdue still flashes across the desplay like the key is still on.
February 28, 2011
  Followup from the Pelican Staff: Ignition switches do fail quite a bit, and could cause the symptoms that you are experiencing. I can't tell if you've already checked the battery as well. I would replace the ignition switch to start and then go from there. Also check all the relays and the fuses in your fuse panel. - Wayne at Pelican Parts  
hack Comments: i bought a used dme for my bmw 1997 740il when i plug it in the engine turns over but wont start i got it for a spare the original one is ok they both have the same numbers on them dose it have to be coded or should it just go in and start i havent paid for it yet i dont know if i am doing something wrong please help thank you al
February 21, 2011
  Followup from the Pelican Staff: I'm pretty sure that with the 1997 7-Series, you need to have the immobilizer coded to match the DME. So, a simply plug-and-play solution is not going to happen, unless you have all of the codes for your car and have it programmed by someone with the proper software tools. - Wayne at Pelican Parts  
hammercf Comments: I am noticing a problem with my 2007 328i. there are no indicator lights on, but i have noticed lately at traffic stops or in an idle position it sounds like a loud humming or whining noise. It almost sounds like a loud fan. also, it only happens on warmer days 50+ degrees. it is not a noise i hear every time i get in the car, and it doesn't begin making the noise as soon as i turn the car on. maybe a pump going bad? a bearing going bad? dealer said everything checked out on diagnostic, but this noise doesn't sound normal. any thoughts?
February 15, 2011
  Followup from the Pelican Staff: I believe on your car there is an auxiliary air fan that is located in the front of the engine compartment. This fan only kicks on when the engine gets hot (or when the A/C is on - at least that's how it works on the older cars, not 100% sure about the newer 2007 cars). The noise you are describing sounds like one I used to have on my 5-Series, where this aux fan would turn on and then it would slightly tap the edge of the fan frame (because it was slightly tweaked). I would take a closer look to see if you have a similar situation. - Wayne at Pelican Parts  
Alex Comments: I got a 97 m3 sedan it has a cylinder six miss fire the coil works. It has Idle air malfunction code. Icv code. Just codes in that category. The thing is I have replace the secondary air pump, the icv, the maf, all the gaskets, no leaks. There were times the car didn't even wanna crank, also times that the rev limiter would only go up to 3.5 k. Could this be the dme?
February 14, 2011
  Followup from the Pelican Staff: I'm not sure how you can tell it has a misfire in cylinder six? If the coil is not operating properly, then you would surely get a code saying so. If you've already checked everything, then perhaps the problem is indeed with the DME or the wire harness. Although a problem with the wire harness *should* trigger some codes that would show faults with the sensors or the coils. - Wayne at Pelican Parts  
firepickle Comments: do you have the codes and years and part numbers for the transmission control unit lik you have for the engine dme
February 5, 2011
  Followup from the Pelican Staff: Sorry, I don't have this information handy in a table, but if you post your VIN and/or the year / model of your BMW, I can probably look it up in the BMW factory documentation. - Wayne at Pelican Parts  
Winkyt Comments: Hey Wayne.
my '94 320i will not start, the battery went flat, i charged it and had it running for a about 5 days but then the key fob stopped working, or at least i thought it was the fob. i changed the battery in it but still no joy. i tried the double lock/unlock trick to disengage the immobiliser but that did not work. I took out the DME as per the posts on here suggested but it is dry. also i had not had any heavy rain or been in a car wash since it was running. I have noticed the red LED light in the middle just above the gear shifter is on consent, not flashing like im sure it was before i could be wrong about the flashing before. is it possible to have the DME tested, if so were is best type of place? my alarm system in a Serpi Star GR420, maybe i need to try and reprogram the fob but i have not found any instructions for that model. any other suggestions would be awesome as im a bit lost now.
February 5, 2011
  Followup from the Pelican Staff: Yikes, I don't like aftermarket alarm systems for this reason. If they are improperly installed or improperly wired, they can cause lots of nagging issues down the line. It sounds like your alarm system may have become defective, and is constantly on, draining the battery. It's a 1994 320i, I'm not sure it's on the high-theft list any more, I would see if you could somehow disable or remove the alarm system, and see if that makes a difference. I doubt the issue is with the DME. - Wayne at Pelican Parts  
Bart Comments: Hi i'm have to following problem: I own a 98 e36 316. european model. The airbag light is on and i can't read or delete any faultcodes. The pre obd/obd2 reader just cant connenct to the computer. all fuses are good, the dlc is good and the car runs fine. i wonder why i cant read the dme or airbag.. someone any suggestions? thanks in advance
February 5, 2011
  Followup from the Pelican Staff: Well, you can't read the airbag codes using a standard OBD reader. You need a special airbag code reader, like the one featured in this article here: http://www.pelicanparts.com/bmw/techarticles/Mult-Air_Bag_Lamp/Mult-Air_Bag_Lamp.htm

As for not being able to read the OBD codes, I would try a different reader. Although the 1998 model shouldn't have any issues with the bus, there were some issues on the early E36 cars that made reading somewhat fickle. The Peake Research code reader detailed in this article is the one I recommend: http://www.pelicanparts.com/bmw/techarticles/Mult-Code_Reading/Mult-Code_Reading.htm
- Wayne at Pelican Parts
 
Cunami Comments: Hello,I have problem with my 318is cupe from 1994 ,DME found full with water,engine can not ignite,fuel pump is Ok,but sparks dosent come every time so engine can not start,
my mechanics told me that DME is not OK ,and after 3 diferent second hand DME replaced same problem every time,Please help for some advice due its very hard to find same DME and my mechanic do not want to make diagnostic due he is surre that DME is not OK?Bosh no. 0 261 203 590
BMW no.1247786
WBA BE5100JG26700801E

Also to add that DME after drying found without any burned parts,and has properly cleaned by mechanic
February 2, 2011
  Followup from the Pelican Staff: This is a tough one. The DME definitely had a problem, as they are not supposed to be full of water. Starting the car with a wet DME will most likely damage the unit. Unfortunately, it may have damaged some other stuff on the car as well when you tried to start it wet. I would check the crank and camshaft sensors, as the engine will not fire spark without these working properly. Also, check the connector to the DME - if that was wet as well, then there may be some rust in there that may be causing the connections from the sensors, coils, and other components to fail to be connected to the DME. Good luck! - Wayne at Pelican Parts  
Michael Comments: I have 1992 BMW 735iL, this car passed emission, two days later the car will not start. I have consulted many mechanics they said ECM is not shurtting the ignition coil, another said No communication with PCM and crank fast, sound like no compression. He rated the compression as follows: 1.150; 2.140;3.0;4. 115; 5.140; 6. 120 Have spent a lot money on this car. Where do I go from here, pls advice. There is a short somewhere also, each time I have to replace fuse #18, it burn instantly.
January 29, 2011
  Followup from the Pelican Staff: Sounds like there is more than one problem. Nearly impossible to diagnose over the Internet here. Zero compression on cylinder number three is very bad news - might make all your fuse burning problems moot. Odd that it passed emissions and then has zero compression - your mechanics may be confused. Sorry, not sure which direction to point you in. - Wayne at Pelican Parts  
ex trying to help the ex Comments: Wayne-I have 96 BMW 318i wish a bad DME 0 261 203 667 Bosch Motronic M5.2 OBD-II
Dealer wants $1200.00 for this part ,,,I don't have it ....I saw the article about swapping out a DME can it be done for this DME or is this a only new and I;m SOL
-Help
January 26, 2011
  Followup from the Pelican Staff: You can indeed swap DMEs on these later cars, but they are programmed to work with the immobilizer in the donor car. So, if you can, I would recommend getting the DME, immobilizer, the keys, and the tumbler too, as the three of those are a matched set and will work together. Getting the DME without the matching immobilizer will not serve you any purpose. New keys can be programmed to work with the new DME, but I believe the DME can only be programmed to work with a specific immobilizer only once. I'm fairly certain of this, but not 100% sure. - Wayne at Pelican Parts  
bobj Comments: Im getting codes P0011 and P1100 on a 740il 1998. I have replaced the CPS and Vanos solenoid. Is the problem possibly the DME?
January 22, 2011
  Followup from the Pelican Staff: If you're getting these codes on the computer, and you've replaced the sensor, then there indeed could be a problem with the ECU. I would also check the wire harness as bad or damaged wires can also cause a disconnect between the sensor and the ECU. - Wayne at Pelican Parts  
Logan Comments: Ok Pelican Parts Wizards, I got one for ya. Long story short I have a 1992 BMW 325I Sedan E36 that cranks over but will not start. I have fuel, can smell gas after cranking and I have no spark on any cyl. From previous research, I decided to replace the crankshaft position sensor. After doing so, still no spark. Moreover, when I plug in the RX5 scanning tool, I get an E10 error the cars computers are not responding to the scannereven after going throigh the Peak suggested algorythm to debunk this E10 error code. As far as I can make out, I have a bum DME. Just wanted a your guy's opinions before I sink 500 bucks! Thanks so much!
December 30, 2010
  Followup from the Pelican Staff: Sure, it does sound like you have a blown DME. I would also perhaps check the DME compartment for water damage and also try reseating the connectors to the DME - they can sometimes become corroded over the years. Unplug and then re-plug the DME in, and see if that perhaps fixes the problem. - Wayne at Pelican Parts  
GeorgeLvt Comments: I have an ECU from a E36 316i coupe model 10/93 and want to place it on an E36 316i sedan model 2/95.Will it fit or needs any ECU programming?Thanks!
December 18, 2010
  Followup from the Pelican Staff: I'm not sure - you'd have to try and see. I don't have International wiring diagrams for the 316i. You can try to see if the part numbers match. In general, I recommend only swapping DMEs from the exact same model year. - Wayne at Pelican Parts  
Brent Comments: Just picked up an Ebay DME "402" for my 92 325i
im being told that i need to swap the chip from my old one to the new one or the car wont run?? i figured since i dont have EWS or anything it shouldnt matter right?
Thanks
Brent
December 16, 2010
  Followup from the Pelican Staff: Those early years are transition years with EWS, but I'm pretty sure that you're right - you can just swap DMEs without swapping the chip. - Wayne at Pelican Parts  
godhu Comments: hi i have a e65 i put on computer they show me dme control idle speed 2 clylaner misfire can u tell what i have to do and how much it will cost me thank you
December 11, 2010
  Followup from the Pelican Staff: It could be a number of things, if you have a misfire, I would probably start with new plugs, reset the code and then go from there. I like to start with the cheapest and easiest solutions first and then go up from there. - Wayne at Pelican Parts  
Maximoslih Comments: I took my car into a car wash and the ECU was flooded. The mechanic was able to dry out the unit so that I can drive the car, but recommended replacing the ECU altogether. I saw one on Ebay from a E36 M3, my question is 1 if the car is driving, should I still try to replace the ECU asap and 2 is the M3 ECU compatible? Thank you
December 7, 2010
  Followup from the Pelican Staff: If the car is driving and you're not getting any codes, then I wouldn't mess with it. I would guess that you got lucky - don't try to fix a problem that you don't actually have! :) - Wayne at Pelican Parts  
Ryan Comments: I hit the gas hard on my 2005 bmw 330 ci and the car just died on me. The dashboard lit up with all the lights and I had no power. When I pulled over I tried to start it with no luck. The car reved but did not turn over. I brought it to the dealership and they stated that I need a new computer and that I cannot use a used one since the VIN has to match? They are charging me 1600 dollars. If I replace the computer with another 330 ci computer would this fix the problem? Thanks for your time
November 19, 2010
  Followup from the Pelican Staff: Ouch. Dealerships like to replace stuff all the time without performing proper diagnosis work. A 5-year old car should not have a computer just die on you, I would try to see if you can get BMW to pay for the new computer - it should not go bad just like that. - Wayne at Pelican Parts  
doug24ch Comments: hi i have a 93' 325i and im having idle problem the rpms are just going up and down 'til finally stalls.I already replace the idle control valve and nothing, no codes either. now..could it be my MAF sensor?? how to check if its bad? its reading 10volts is that normal?? do I have a bad DME? the check engine light doesnt come on when i unplug the MAF is that normal?
November 16, 2010
  Followup from the Pelican Staff: I would be sure to pull the trouble codes, and also triple-check for vacuum leaks in the intake manifold. - Wayne at Pelican Parts  
daz Comments: Thank you for the great information. Do you have the same dme and water leaking info for an E28 533i?
Thanks
November 10, 2010
  Followup from the Pelican Staff: Hmm, I don't think that the water penetration issue is as prevalent on the E28 cars. - Wayne at Pelican Parts  
JJ Comments: thanks wayne, ive been doing some research and according to my VIN, it seems that 402 was factory fitted so i will try with that. thanks again for your time. Best regards. Jovan
October 31, 2010
  Followup from the Pelican Staff: Thanks for the feedback. Glad we could help.- Nick at Pelican Parts  
JJ Comments: hi Wayne,

I have a 325i e36 8/92 M50B25 thats showing symptoms of a bad ECU. in the car i had a 403 and thats the one making problems. now ive put a 405 that seems to be better, but its also a ecu with a known problem. from my understanding the bosch 405 comes form the 525i. my quesetion is how much difference is really between 402, 403 and 405 units and which should be in my car, i think 402 looking at the age. Which should i proceed and buy, or can i put an appropreate chip in the 405 and make it basically a 402 which i think i need. thnx for your help.
October 30, 2010
  Followup from the Pelican Staff: The 1992 cars are an off year, as they had a lot of early changes that weren't in the later ones. I don't know specifically which ECU is proper for your car, but generally speaking, all of the ECUs from that general era were very much the same. If one fits and works fine then I would just run it and be done with it. Other than that, I would buy a used one out of a 1992 3-Series car on eBay or some place like that. - Wayne at Pelican Parts  
T Spot Window Tint Comments: Hi Wayne, Recently I purchased a DME from a '95 740i with a Dinan Chip in it. I have a '94 530i 0 261 203 484 is part # of one purchased M3.3W EWS II software. Is this by any chance interchangeable with my my 0 261 200 404 DME with 3.3 software. I do have ASC/T on my car...don't know if it makes any difference. Any help will be greatly appreciated.
October 19, 2010
  Followup from the Pelican Staff: Nope, these are completely different engines, and the chips are not interchangeable. - Wayne at Pelican Parts  
joecsk Comments: Hi We have a 1998 M3 auto sedan and it's showing misfire on cylinder 6. Engine idles and runs rough, lack of power. We had the injectors ultrasonic cleaned. Spark plugs are new, ignition coils are working. We then tested the pulsed voltage across the fuel injector connector. Cylinders 1 through 5 has a signal ranging from 0.1v to 0.3v but Cylinder 6 is showing 0.01v to 0.06v. Do you think the DME is the likely cause of problem? Thanks!
October 12, 2010
  Followup from the Pelican Staff: I would perform a compression test before suspecting the DME. Especially if spark and fuel are present at each cylinder. You could have a mechanical engine problem. - Nick at Pelican Parts  
Henrik Comments: In my V12 M73 on bank is down, I suspect one DME is out because I'd check everything else. Would you recommend swaping the two DME's in order to check. I know that was possible with the M70 V12, but is a swap also a possible way to check DME's in a M73?
October 7, 2010
  Followup from the Pelican Staff: I'm not 100% sure, but I don't think you would do any damage to try it out... - Wayne at Pelican Parts  
Will Comments: how and what chip should be replaced in the DME for my car? the original DME part nr. 0 261 203 282..../and I found a DME part nr. 0 261 204 357 that is new. How can I replace the chip to get my DME back up and operable?
October 5, 2010
  Followup from the Pelican Staff: The versions of Motronic on the DME must be the same in order to swap them out. If they are the same, then simply swapping the chip should work. On later DMEs, there is no chip, but softwarwe instead, and you need to upgrade / swap the software in order to make them operational. - Wayne at Pelican Parts  
Charlene025 Comments: Does this problem also occur with the 2008 530XI? Was their a recall or knowledge of a pre-existing problem?
October 3, 2010
  Followup from the Pelican Staff: The problem with the water getting into the compartment? Not that I'm aware of. - Wayne at Pelican Parts  
piggy eyed parker Comments: ECU swaped do i need to change key and imobiliser box from doner car aswell? or can i change the ecu data to the original ecu?
September 20, 2010
  Followup from the Pelican Staff: Some cars require the codes to be updated, and some don't - it depends upon the year. In general, it's best to get the immobilizer, key, and DME together and install them as a set - that way you won't have additional issues. - Wayne at Pelican Parts  
bimmerbumm Comments: I'm in the process of finishing up a swap in a 10/94 production e36 with a motor from a 5/94 production m3 everything is boled down and ready to go the motor cranks and cranks strong but wont fire and the check engine light is not on even when in th ACC position it just stays off and the bulb is good i have checked any ideas what this could be?
September 8, 2010
  Followup from the Pelican Staff: Something is unplugged or loose. The code reading tool will probably tell you what (it doesn't always trigger a check engine light right away). See here for details: http://www.pelicanparts.com/bmw/techarticles/Mult-Code_Reading/Mult-Code_Reading.htm - Wayne at Pelican Parts  
WSW Comments: This is a very last second post just hoping that someone MAY stumble upon this in the next few hours.
I'm parting out an '88 325iX and one of the items I have is a performance chip made for the 153 / 1.1 motronic ECU. A gentleman is interested in this, but has the 173 / 1.3 in his '88. I know there are differences in self diagnostics, but are there significant ramifications in swapping the ENTIRE motronic unit including the chip? Can we swap them temporarily to check the performance and then swap back if there is a problem and then expect normal performance again once the 173 unit is returned?

Thanks to anyone who happens to see this in the next 10-11 hours.......or in other words......NO ONE! :-D
August 25, 2010
  Followup from the Pelican Staff: I would think that this probably would not work. I also don't think that it would cause your DME to be fried, but you never know. - Wayne at Pelican Parts  
jfz Comments: Wayne, I have an E36 318i that was produced prior to 94 for the last year whenever it rains my car will randomly sputter but it will never stall just a bounce in the RPM's at a stop and a loss in power, so I thought it was a vacuum leak or possibly my ICV but after reading this article and the code which told me to check my knock snesors I am begining to thing it is a bad ECU the car has 140K on it. Any suggestions? Thanks
August 12, 2010
  Followup from the Pelican Staff: Hmm, if it only happens when it rains, then I would check the DME compartment to see if water is getting in there. Wash the car heavily and then check around the rear of the engine compartment for proper drainage. I would doubt that the ECU is bad, as it would be giving more errors and/or the car wouldn't run at all. - Wayne at Pelican Parts  
chamaur Comments: Wayne, thanks for your advice. As to your response below. I'm getting stomp test code: 1444 which means all is well. I installed a new crank sensor, and I am getting a pulse reading from the injectors. While cranking I tested cylinder 1 and 8. I used a test light on the 2 wire terminals powering each injector, while cranking I can see my test light blinking. So I know for sure now I'm getting spark, fuel, and air. Any other suggestions would be really helpful. I await your response.
August 9, 2010
  Followup from the Pelican Staff: Sorry, problems like these are very difficult to diagnose in person, let alone over the Internet. Sounds like you need to let a qualified shop take a closer look. - Wayne at Pelican Parts  
chamaur Comments: Hello Pelican. I have a 3/94 BMW 530i. The car won't start. Here are some tests that I performed.

1. Fuel: I installed a new fuel pump a few months ago. I hooked up a fuel gauge to the feed line of the fuel rail. I got a constant 53 psi. I used a fuseable link at the fuel pump relay to put direct power to the pump. So, I'm guessing my Fuel Pressure Regulator is good?

2. Spark: I put a spark plug tester on cylinder 1 and I'm getting good spark. I just bought and installed a new Crank Position Sensor.

3. Air: I installed my air flow meter in another BMW and it ran fine in the other car.

I'm getting fuel, air, and spark. When I crank the car for a minute with a battery booster, I feel the exhaust manifold getting warm. I can hear combustion. I also tested the coolant temperature sender/switch and throttle position sensor. They all tested correctly according to the Bentley manual.

I started a post on:

http://www.bimmerboard.com/forums/posts/804458

Please can you throw me a lifeline and try to help me get my car started? Please?
August 7, 2010
  Followup from the Pelican Staff: Just because you're getting fuel pressure from the pump, doesn't mean the injectors are firing. You need to check the injector pulses and see if they are squirting fuel. This is pretty difficult to do on this engine, however. If you have fuel from the injectors, and spark, and the car will not start, then the only thing that could be wrong is timing, which is very difficult to get wrong on these cars. I would start by reading the codes that the car is putting out: http://www.pelicanparts.com/bmw/techarticles/Mult-Code_Reading/Mult-Code_Reading.htm The car should be able to tell you what is wrong with it. Crank angle sensor and camshaft sensors will cause problems like this. - Wayne at Pelican Parts  
robsgirl Comments: i have a 98 328i BMW and have to replace the ECU, just wondering if there was a procedure and how u go about doing it....thanx for any help you can give me
July 20, 2010
  Followup from the Pelican Staff: Sure, see here: http://www.pelicanparts.com/bmw/techarticles/E36-DME-Repair/E36-DME-Repair.htm and here: http://www.pelicanparts.com/bmw/techarticles/E36-DME-Repair/E36-DME-Repair.htm - Wayne at Pelican Parts  
havintrbl Comments: I have a 97 328i pulling code for multiple cylinder misfire 2,4,5 replaced plugs,swapped coils around to see if problem moved,going to do compression test ,and ill try swapping relays for dme. any other things i need to look at?

any advice would be much appreciated. thanks!
July 15, 2010
  Followup from the Pelican Staff: That's an odd combination - I would maybe think that there might be a pinch or problem in the wire harness that supplies the coils? - Wayne at Pelican Parts  
yuss Comments: i want to knows about E36 318i A M43..problem is the vehicle cannot start caused by EWS not connection..how to solve this problem..tq.
July 14, 2010
  Followup from the Pelican Staff: The EWS immobilizer needs to be properly matched to the DME and working in order to start the car. If the immobilizer fails, then the car will not start, and you will need to purchase a new one, and then have a BMW dealer recode the DME to match the new one. - Wayne at Pelican Parts  
Scott Comments: Wayne- I have a '93 318iS. I had the check engine light come on a while back right after I filled up with gas, but it wasn't the gas cap! Checked the codes, and got just 1286 knock sensor. Car ran fine, just like normal. Drove it a few more weeks and checked the codes again. Now I get just 1211 DME self-test. Car is still running beautiful, just like before the CE came on. If the DME was bad, the car wouldn't run well would it? What would cause the 1211 code, and should it go away if I swap the DME? I need to get rid of the CE light.
July 7, 2010
  Followup from the Pelican Staff: Odd set of codes - could have been caused by bad gas maybe? Reset the codes and the lamp (using the tool), and see if the code returns. - Wayne at Pelican Parts  
raider44 Comments: i have 1994 318is 5spd and i just had the ignition replaced and the battery died when the ignition broke picked up car had to jump it ran for about 5 mile parked it wont restart left sit for 5 hrs restarted it ran it around block 4 times parked it then restarted 3 times. sat overnight wont restart again has new battery new plugs has spark fuel pump turns on replaced fuel filter still nothing..also when car restarted the rpms went from around 750 rpms to 2500 rpms and back and forth acted kinda like bad gas??
June 25, 2010
  Followup from the Pelican Staff: The hunting issue is typically a mixture problem, which is usually caused by a massive vacuum leak. I would check for leaks and also pull the codes from the engine. See the code reading tech article for details. - Wayne at Pelican Parts  
Ben Comments: Hi. Thank you for writing and responding to these excellent articles.

I have a 1988 325e. Manufacture date of 10/87. In the car now is the Motronic 0 261 200 154 brain. It evidently is a used unit because it has writing on it indicating it was pulled from another car. The trouble: it idles at 1500rpm. It has a new idle air valve and I have double checked that the mass air flow sensor is functioning.

I borrowed a 0 261 200 173 unit from a friends e30 and mine ran perfect!

I'm confused because in your table you have the 0 261 200 154 unit listed for the 325e/es 1/87-9/87. And the 0 261 200 173 unit listed for the 325i 87-91. So if I'm reading correctly nothing is listed for my car.

Furthering my confusion is that when I decode my VIN it says I have the 325i. But on the door jam it clearly has an "e" indicating it's a 325e.

All that to ask, what is the actual Motronic unit that should be in my car?
June 23, 2010
  Followup from the Pelican Staff: 87-91 means 1987 thru 1991, which would include 1988. I think that's possibly a typo too, and should read 1988-97. The 173 unit sounds like the correct one for your car! Especially if the 173 unit ran fine.- Wayne at Pelican Parts  
Asya Comments: The driver is handicapped and is not allowed to drive over 100km. The car has to be limited to that speed or else he is not allowed to buy the 2008 325i coupe automatic car. How can we do this speed limiting? Thank you for your help. Driver is my son.
June 23, 2010
  Followup from the Pelican Staff: You will have to contact BMW for that info. It sounds like something one of their service engineers can do, but I am not 100% sure. - Nick at Pelican Parts  
Ktboo Comments: Hi, could you please explain to me in simple terms what the DME dose? I have an error with it and it is telling me the error is with the part No 7501733 - Basic controll unit. I have a 1998 540i manual and am totally confused how to fix my problem!!!
June 18, 2010
  Followup from the Pelican Staff: "The Bosch Motronic Engine Management system is what controls the ignition, timing and emissions controls of the later-model 3-series cars. As such, it can be considered the brain of the car. The ECU (Electronic Control Unit) will cause the engine to run poorly or to stop running altogether if it becomes damaged. " - Wayne at Pelican Parts  
scarface Comments: Additional note! I just spoke with the mechanic and he says there is power on the ground side. He has no idea where it's coming from but, with power on ground he can't get relays etc. to function. Any ideas? Thanks.
June 16, 2010
  Followup from the Pelican Staff: Hmm, "power on the ground side" can't be correct - the ground is by definition, well, the ground of the battery. The mechanic sounds like he's a bit lost at this point, I would question his ability to fix the car. The car will start with spark and fuel with proper timing. You should be able to be pulling codes from the DME that will give you some clues about what is going on? - Wayne at Pelican Parts  
scarface Comments: I have 96 318i. It died on the road. I change the fuel pump. It worked, so I washed the car, including clearing debris from hood gutters. Next morning, no fire. No power to pump. After much research/consulting I changed crank angle sensor. No fire. I hired a mechanic. He guessed bad ignition. Replaced it. No fire. He found water in ECU. Replaced it. Still no fire. He says grounding somewhere bad, probably needs new harness! He's done working on it -his decision. Won't bill me because he can't diagnose the issue. Says some voltage getting to relays, but not enough and grounds are flakey. Now what do I do?
June 16, 2010
  Followup from the Pelican Staff: If the grounds are no good, locate the grounding points and repair them.
I would dobuel check all power and grounds to the DME, test them under a load and measure the voltage drop.

- Nick at Pelican Parts
 
Cameron Comments: Wayne i have a 1994 bmw 318i, I noticed that freddi was or is having the same problem that i am i bought this car and a light came on it looks like a gear with ! in the middle of it and it stays on, I drove the car for about two mile and it just died couldnt restart it, is this a common thing for this year bmw ? also i was looking on line trying to figure out whats going on and everone i was talking to said that its a immbolizer ? that is preventing me from starting the car is this true before i send money trying to fix this and is it worth it ?
June 12, 2010
  Followup from the Pelican Staff: The gear lamp with an exclamation point is the transmission, although I'm not sure why that would keep the car from starting? - Wayne at Pelican Parts  
FREDDI Comments: 1994 BMW 318I WOULD THE TRAMSION CAUSE THE CAR NOT TO START ? AND THERES A LIGHT THATS ON IT SAYS IT A TMC WHAT IS THIS AND WILL THIS PREVENT THE CAR FROM STARTING ?
June 12, 2010
  Followup from the Pelican Staff: Possibly. You need to read the DME and the transmission codes with a specialized reader for a problem this significant. - Wayne at Pelican Parts  
freddi Comments: back to the 1994 bmw 318i ok when bmw had it i was able to get about ten mins away from the shop and i noticed the rmps went to 7000 and the speed dropped to zero when this happend my car completely died and has not started back up . could this be a bad dme? and should the relay be changed as well ?
June 9, 2010
  Followup from the Pelican Staff: If rpms spiked and the car stopped moving, then that's a problem with the transmission (auto) or clutch (manual). It doesn't sound like a typical DME issue to me. - Wayne at Pelican Parts  
freddi Comments: i have a 1994 bmw 318i i just replaced the dme, crank angle sensor . and my car still wont start i took it to bmw and they cant seen to see the problem! im not getting a spark, it wants to turn over but nothing happens i was told it may be the imoblilser ,how do i bypass this? and also i have no chip in my key ither please help
June 9, 2010
  Followup from the Pelican Staff: On EWS1 vehicles, the EWS system disables the starter motor. If your starter motor is turning the engine over, it is not the EWS.

You'll want to check the basics. Check spark, fuel injector pulse and fuel pressure, volume and quality. Once you figure out what is missing, it will be easier to diagnose. - Nick at Pelican Parts
 
GG Comments: I NEED THE CONTROL UNIT FOR 88 BMW 520I
MOD. 320I
CHASSIS E30
ENGI. M20/B20 129 hp
BOSCH PART NO. 0 261 200 172
VERSION BOSCH MOTRONIC M1.3
June 5, 2010
  Followup from the Pelican Staff: I've forwarded your message to our sales department. - Wayne at Pelican Parts  
John Comments: Hi, i have just put a second hand motor in my e36 m50, i have fuel at the rail and all over spark plugs but no spark when cranking, the only time it will spark is for a split second after you let off the key, had the fault codes read 68 and 79 but cant find them anywhere, diagnostic tool also says ecu has 0v. Any help is appreciated, thanks
June 2, 2010
  Followup from the Pelican Staff: If you are using the Peake Research tool to read the codes, then you need the manual that goes along with it to translate those codes for your year car. 68 and 79 are not valid OBD-II codes. - Wayne at Pelican Parts  
NIKOS Comments: Hi I want ecu for bmw e34 is motronic bosch the part number is 0 261 200 405
thanks
May 11, 2010
  Followup from the Pelican Staff: Try our sales department at 1-888-280-7799 and they can find out pricing and availability for you. - Wayne at Pelican Parts  
shlalaw Comments: Okay. My bad. I kept wondering why the article referred to two drains. I finally located the second on the other side of the firewall. Makes sense now.
May 9, 2010
  Followup from the Pelican Staff: Glad the article was helpful. - Nick at Pelican Parts  
faetzy Comments: Hi Wayne, I have a 90 325is that will not start! Change the main relay, no fuel no spark, car worked fine, shut it off and hasn't started in 4 months. Pleeeeease help
May 1, 2010
  Followup from the Pelican Staff: The most obvious place to look would be the DME relays and fuses. Check to make sure that the relays are clicking on, and that they are providing power to the unit. Sitting for months can cause corrosion to build up on the internal contacts. - Wayne at Pelican Parts  
zenon Comments: my 316i isnot starting.no power at fuel pump and bench tested pump its ok. swapped out relays and nothing.sprayed intake cleaner and the ideal also into throttle body and it still not working. and the rpm is not stable, some times it is 950 then it becomes 500 then 300 and feeling like it want to turn off,,,and my max rpm is 5000,, i donot know why ??,,,i checked the MAF, it is OK,,,and when also some charges comes out from da car and the fuel comes out also like it is not all burned inside da engine,,,i need a help please,,,
May 1, 2010
  Followup from the Pelican Staff: - Wayne at Pelican Parts  
shlalaw Comments: The article says "the fix is to install a third drain." My car has one drain. Where is the second? Thanks.
April 30, 2010
  Followup from the Pelican Staff: There should be two on the bulkhead, except perhaps on very early E36 cars. - Wayne at Pelican Parts  
llking Comments: I have a problem with my ECU not sending the signal most of the time to the fuel pump relay during cold weather below 42F and cold engine. Thus causing the car not starting. However, I have no problem in other conditions.

Do I need to reprogram and/or realign if I found an exact ECU?
April 20, 2010
  Followup from the Pelican Staff: Have you confirmed the fuel pump relay is the only component not being activated? The cold could be causing a DME or relay malfunction.

To answer your question, if you have an EWSII or later vehicle, yes the EWS will have to be aligned.- Nick at Pelican Parts
 
awatec Comments: I have a 92 318i. I just replaced the engine with one out of a 95 318i which had the same engine. Once the engine warms up the idle fluctuates from 1100 to 1400. Engine light is on and code 1642 ICV. Replaced ICV and no help. Replaced o2 no help. Replaced both water temperature sensors no help. Brought to a friend with an OBD1 reader and will not let the reader in giving a 599 error code. Ordered a DME on ebay. Any other help you can give would be appreciated.
April 14, 2010
  Followup from the Pelican Staff: Check that there are no vacuum leaks. If none are found, check the circuit to the idle control valve. Be sure it is getting the right control voltage and it is not shorted. - Nick at Pelican Parts  
Kram Comments: My 2003 318i shuts off suddenly sometimes and fails to restart for some time, then starts like there was never a problem. My repairer says its the DME and wants to charge $1500 for a new one. My friend says up to 80k miles or 8 years, it should be free from BMW. Is that true?
March 26, 2010
  Followup from the Pelican Staff: Your DME might be covered under the emission warranty. Depending on why it has failed. Check with BMW to be sure. - Nick at Pelican Parts  
Enduras Comments: Hello, my car 318i M43, 1993 sedan, VIN : KA02432
From 1 week car dont start and i found the problem, DME was totally in water, only fishes missing from it:
DME: Bosch 0261203277.

Problem is I cant find exactly same model of DME, is any other DME close to this one? another code? chip is intact from what i can see so i can replace it in new DME if need. Thank you, good day.
March 17, 2010
  Followup from the Pelican Staff: I did a quick search and found these part numbers may be compatible:
BMW 1743254 Bosch 0261203277
BMW 1743247 Bosch 0261203277
BMW 1247851 Bosch 0261203277
- Nick at Pelican Parts
 
RAY Comments: CAN ANYBODY HELP ME WITH FINDING A BURGUNDY COLOR LABEL DME BOX, OR THESE MATCHING BOX # 261 203 282.
IT'S FOR A 94 318IC M42 1.8 LITER.
March 13, 2010
  Followup from the Pelican Staff: Give our parts specialists a call: 1-888-280-7799
they will help you find the right DME. - Nick at Pelican Parts
 
Cbn Comments: Hi guys, I need to replace my DME 0261 200 403 damaged after replacing thermostat and not re-attaching earth!. I have a 0261 200 402 that I can replace it with, is this compatible? same motronic version. Many thanks.
March 2, 2010
  Followup from the Pelican Staff: These part numbers shold be compatible with your DME:

0 261 200 402, 12 14 1 735 614,
12 14 1 740 234, 12 14 1 740 247,
12 14 1 740 253, 12 14 1 740 354,
12 14 1 744 859, 12 14 1 744 859.2,
12 14 1 744 861, 12 14 1 748 037,
12 14 1 748 401 - Nick at Pelican Parts
 
Ganzolo Comments: There seems to be a problem. On the first array the reference 0 261 200 059 is bind to motronic 1.0 adaptive. But on the link "bosh part number" it's bind to ML3.2.
Which one is correct?
Thanks
January 18, 2010
  Followup from the Pelican Staff: Thanks for the feedback. We're looking into it. - Nick at Pelican Parts  
junkdrawer Comments: my number 6 injector stopped working after I replaced my starter.. I tested the wiring going to the injectors as I got a check engine light saying that injector 3 was the problem. I turns out #6 is the problem. I traced the wire back to the dme the brown with the violet stripe and still have almost no reading. could i have a bad dme? It starts right up its just 1 cylinder is missing. I unplugged that cylinders plug wire and no change. any suggestions?
January 18, 2010
  Followup from the Pelican Staff: I don't knoww hat vehicle you have so I cannot look at the wiring.

You have 5 other working injectors, I would compare the signals. If the signal is different or missing, check that the wiring harness is in good shape. If the wiring in intact and no other problems can be found, the DME might be the issue.

Keep in mind, if the DME sees a misfire, it may shut thei njector off to prevent catalyst damage. - Nick at Pelican Parts
 
msm Comments: 1998 328i will not start.no power at fuel pump and bench tested pump its ok. swapped out relays and nothing.sprayed intake cleaner into throttle body and it started.any suggestions
January 15, 2010
  Followup from the Pelican Staff: Check that the relay has power to terminals 6 and 8. Terminal 4 should be grounded by the DME when starting and the engine is running. Terminal 2 is the output to the fuel pump. - Nick at Pelican Parts  
jack up car Comments: How a person repair a ecu or dme in a bmw 318IS with possible water damage?
December 25, 2009
  Followup from the Pelican Staff: Water damage is tough. I would suggest replacing the DME instead. - Nick at Pelican Parts  
RickyRicardo Comments: Can I swap my 081 ECU for a 173 ECU on my E30?
December 22, 2009
  Followup from the Pelican Staff: You're goingto want to stick with the same part number. I would need the whole part number to see if I could cross reference it for you. - Nick at Pelican Parts  
stu Comments: Hi i have a BMW 316i 2000reg E46, lets start from the start i had the EML come on and off i had the car checked and there was a lambda senser failer. had this replaced the light continued to come on and off. then i started to get loss of power and shuddering when pullking off the lost off power would go then come back once the car had warmed up for around 5 mins it would be fine. i changed the spark plugs, the lambda senser, the HT leads, the air filter, the oil filter and had a cam shaft senser replaced all in all around £600.00 worth of work. the car now keeps going into limp home mode after all that it still wont work the only code i have is the DME code the garage is now saying the DME needs changing does anyone agree with this?

Quick update i have only changed the front lambda sensor and not the rear im not sure how much trouble the lambda sensor would cause ie go into limp home mode.
December 21, 2009
  Followup from the Pelican Staff: This could be a problem with your throttle body or an associated component. Check your DME for fault codes using a BMW scan tool. Once you have the codes, you will have a good place to start.

The oxygen sensor should not turn on the EML light.- Nick at Pelican Parts
 
debucat Comments: thank you for the insights
it turns out that the ecu in my car is an older version not configured with my ews.a red bosch 261 203 282and not the silver 261 203 282 equipped with ews
is it easier to just disable my ews and how have read you can cut green wire 7 in dignostics plug, or cut wires 1 and 3 to ews harness and solder those together
how ever was thinking maybe just buy a ews/ecu/chip combo from a parted ebay car. saw one with bosch number 261 203 590, dont see that listed above in the pelican dme listings, any idea what model that is from and wether that would work?
thanks so very much

December 20, 2009
  Followup from the Pelican Staff: Thanks for the follow up and additional information. - Nick at Pelican Parts  
debucat Comments: hi wayne,
thanks for the great work,
I have a 95' 318i m42, it has a hard time turning over. sometimes it turns over after three attemps sometimes it takes forever, runs great, its just hard turning over the engine. haveswapped out the dme for same bosch number DME used on ebay no differenbeing pulled, the mechanicvery consciencous has been tracing ce,new crank sensor, new o2 sensor,no codes show up,my very honest mechanic has been tracing the wires n grounds to no avail. is convinced its the computer. u mentioned if the car runs its prob not DME.Any ideas,am I missing sensors?
December 9, 2009
  Followup from the Pelican Staff: If this were my car, I would go back to the basics. Check the fuel pressure at the injectors and see if they are operating properly. You might have to pull the whole rail and put each injector into a small jar. I would also pull one of the coils / plugs and see if you're getting spark. I'm betting that one or both of those is having trouble, and then you can figure out what to concentrate on. - Wayne at Pelican Parts  
BKH Comments: I have a 95 325i that is eating fuel pumps, 3 since May, 4th today. One time the plastic hose on the pump failed blew a hole in it. Could it be a wet motronic "brain" that is causing this. Car just dies like it's not getting fuel, replace the fuel pump and it works for a few weeks then dies again. pressure regulator? something, can't be 4 brand new broke in the box fuel pumps.
December 8, 2009
  Followup from the Pelican Staff: That's very odd. If you bench test the pumps are they dead? The only thing I can think of is that the voltage getting to the pumps is off, but I can't see how that could possibly happen. Perhaps there's a bunch of crap in the tank that's clogging them? - Wayne at Pelican Parts  
mclean_01 Comments: hi i have a uk 1993 320 i and was wondering if i replace the dme will i need to have it recoded the car has a toad aftermarket alarm fitted aswell
November 17, 2009
  Followup from the Pelican Staff: You will have to code the DME to your vehicle. - Nick at Pelican Parts  
HOSTAKI Comments: This is an E30 car with a M20/B25 swap engine .This engine comes from an E30 too . So my VIN number is out of "order" ! But my ECU now is gone due to a cloged water drain ... common to these cars .

I wonder why this part numbers isn't listed in your list . Its a 35 pin plug and a 24 pin chip . Thats the info I have so far .
Saw your thread and thought I could swap my chip onto another ECU that has the same Motronic version and pins. Is that right ?
November 13, 2009
  Followup from the Pelican Staff: It should work. However there is always that time it won't SO be prepared, get a DME as close to your model and part # as possible. - Nick at Pelican Parts  
hostaki Comments: I have a 0 261 200 073 ecu . What is my Motronic version and what other Ecu can I swap?
November 13, 2009
  Followup from the Pelican Staff: What kind of car is it for? Can i get the last seven digits of your VIN? Typically, you can only replace the ECU with the same number.


- Jared at Pelican Parts
 
BimmerBoy Comments: hi,
3 weeks back i had problem with the EML and they have to change the throttle valve motor and the car worked perfectly

after that i drive the car for 1 day suddenly the EML light come again!!!!!
and every time i push the throttle its sounds like the engine will stop working

I came back the the same garage, after 2 week in the garage they said i have to change the DME, the car is working now but i cant drive it, its keep given me different light on the dashboard, some time the oil, some time the the EML, and some time its just work perfectly!!!!! do you think i have to change the DME???? PLZ I NEED SOME HELP.....

Please See The Attachment link

http://www.youtube.com/watch?v=4Pz6YdFSu_g&feature=player_embedded


THANKS
November 8, 2009
  Followup from the Pelican Staff: I listened to the YouTube video - that sounds terrible. First thing I would ask is what codes are being output by the computer. If they already changed the DME, then my guess would be that there's something amiss with the wire harness that connects all of the sensors together. This sounds like a tough one to diagnose. - Wayne at Pelican Parts  
Michael T Comments: They're all the same height. Different question: I'm replacing the DME with another used one. Any special instructions beside disconnect the battery?
November 4, 2009
  Followup from the Pelican Staff: No real need to disconnect the battery. - Wayne at Pelican Parts  
Michael T Comments: My relays were switched arounda nd replaced by a well meaning friend when my 90 325ic would not start. Can you tell me which one is the DME relay and where it should be located? There are three relays next to the lf shock tower and one is different but the plugs are the same.
November 4, 2009
  Followup from the Pelican Staff: I believe the fuel pump relay is the big tall one and should be located in the center of the three relay panel under the plastic cover, but I'm only 95% sure. - Wayne at Pelican Parts  
tgandolfojr Comments: I crossed the battery terminals on my 98 323is. The motor will turn but no firing up. Fuel pump not making any noise? Is the ECm to blame?
November 3, 2009
  Followup from the Pelican Staff: Check all the fuses and relays. Crossing terminals is not good for the DME, and it may indeed be fried. Or, you may simply have a fuse that is blown. - Wayne at Pelican Parts  
MJS3 Comments: My M3 EVO is a race car and the DME failed...I got a replacement but it is a pain pairing the EWS to the DME so the key works...is there a way to remove theneed for the EWS?
November 1, 2009
  Followup from the Pelican Staff: Not that I know of. I would just keep all of the stock car components (immobilizer, key and DME together). - Wayne at Pelican Parts  
BB Comments: I am having a Problem with a 1995 318i the cluster is acting erratic, it will work then not work or start bouncing around. Everything I have read so far relates to the water problem described. Or should I replace the cluster
October 26, 2009
  Followup from the Pelican Staff: There's another problem that could be related to the trunk wiring. Check our tech articles section for troubleshooting electrical problems on the E36 BMWs. Could also be caused by bad wiring elsewhere. - Wayne at Pelican Parts  
325i/1993 Comments: How should I know if my car has an immobilizer? If it comes equipt with an immobilizer where can I have my replacement DME recoded? I just recently bought your 101 book hoping to find an answer there but the book is still on its way, Can you shed a light on these and I'll promised you I'm going to read your book page by page...cheers!
October 18, 2009
  Followup from the Pelican Staff: Yes, you can have the DME re-encoded by someone who has the proper equipment to do that. I've done this on the late-model Porsches, but not on the mid-1990s BMWs, so I don't know exactly what is involved 100%. - Wayne at Pelican Parts  
325i/1993 Comments: Hi Wayne, My question is do I need to have my replacement DME recoded? I had a 93 325i automatic and my original DME got fried, bought a new DME on ebay from 5series but we got same part number the 413 but somehow still my car wont start. Do I need to swap my original chip in there? Is that the reason it wont start because it reads different mapping from the other chip? I cannot just open the DME I bought from ebay because its our agreement not to open it if I intend to return the unit just in case its not the right part or will not work. When you mention "recoded" do I need to bring my new DME to a special shop or something? Still my car wont start even if I put the new DME. I had my starter check from autozone and its working fine but the guy told me that sometimes it hits some "deadspot" causing the engine not even rolling...How true is it? Does it mean I need to replace now my starter to avoid recurrent episodes of not starting? I really do appreciate your help and expertised about 3series BMW...thanks alot!
October 12, 2009
  Followup from the Pelican Staff: Hi there. If your car has an immobilizer, then the DME needs to be recoded in order to match your particular car. Otherwise the car will not start with the new DME. - Wayne at Pelican Parts  
Hassan Comments: Dear sirs,I have problem in my BMW 318IA 2003 .when I start moving it move normally but sometimes if i want to quick accelerate after start moving I feel its act and noise as you catch a person cannot breath not as starting strongly,and sometimes when you slow down in trafic then give again also RPm goes down for few seconds then take again.on scanner no default.please help me or can you give me any sponsor garage for you in lebanon

October 10, 2009
  Followup from the Pelican Staff: Hmm, it's tough to diagnose something like this over the Internet, but just taking a wild guess, if it's an automatic transmission, it may be a problem with the tranny. Low tranny fluid sometimes causes problems like these. - Wayne at Pelican Parts  
gjg Comments: so i dont actually need the plastic key reader arround the barrel from the donar car?
September 29, 2009
  Followup from the Pelican Staff: You need the immobilizer unit (EWS) that plugs into the reader. I believe that's how it's setup on that car - with the EWS. - Wayne at Pelican Parts  
gjg Comments: is the immobilizer unit the EWS unit under the dash?
September 29, 2009
  Followup from the Pelican Staff: Yes, usually on the left side. Of course I am saying this without knowing the exact model of your vehicle.- Nick at Pelican Parts  
gjg Comments: hi there im trying to change a ecu unit on my bmw 328i...from the donar car i got the keys, the dme unit and the ews unit ...is this all i need? or do i also need the chip reader that surrounds the ignition barrel from the donar car too?
September 28, 2009
  Followup from the Pelican Staff: You need to get the immobilizer unit (EWS) which plugs into the chip reader that goes around the key. But the actual ring reader is generic to the cars. - Wayne at Pelican Parts  
ploughman 7 Comments: Ive just transplanted a 328i lump, loom and ecu into my 96 323i e36. She now wont start on the 328i ecu, i have the 328i key chip but not the ignition barrel suround with the chip reader in it. Is this what i need to start? Many thanks
September 26, 2009
  Followup from the Pelican Staff: Yes, there are three things needed to start the car. The key with the microchip / RFID chip inside, the immobilizer that reads the the codes on the key when it's in the ignition, and the DME, which must be mapped to the keys and the immobilizer. - Wayne at Pelican Parts  
curious Comments: 1987 BMW 325i: what is the average price of a DME for this vehicle? Also, if the vehicle is rough idling, does it necessarily mean that the DME is bad, or could it be one of the relays? Also, all of the other thing that the DME controls are working perfectly fine.
September 18, 2009
  Followup from the Pelican Staff: You can probably find them on eBay for $25-$50 if you look. Most of the time, if the car is running, then the DME is okay, and it's one of the other sensors that are suspect. - Wayne at Pelican Parts  
Dr Pid Comments: What's the difference between DCM ECM and DMW units?
September 9, 2009
  Followup from the Pelican Staff: DCM is door control module. DMW is not ringing a bell. - Nick at Pelican Parts  
fasteddie Comments: OBC no power, I traced it to the horn relay under rear seat, blown 15 amp fuse, installed another and it blew, could it be the relay? or do I need to painfully check every wire for a short? 95 E-34
August 27, 2009
  Followup from the Pelican Staff: The horn relay is not related to the DME - I think you are confusing the relays. You definitely have a short circuit in the car some where. I would check the trunk wiring (see the article on this, in our tech articles section). Problems back there can cause all sorts of problems like these. You could try another relay, but it doesn't sound like that's the problem to me. - Wayne at Pelican Parts  
ale Comments: hi i have a BMW 92 325is and im having a problem with one of the motronic electronic control unit it got burn and i wanna see the price of that one the series is 0 261 200 402 thats the one i have but i want another one where can i find it and i need to nknow the price of it I live in san Diego CA please help me?
August 25, 2009
  Followup from the Pelican Staff: Hi there. Give our sales department a call at 1-888-280-7799 and they can assist you with this. - Wayne at Pelican Parts  
Ms. Q Comments: Hi there, I have a 1993 325i and just recently had a ton of work done on the car. However it is still acting erractic and when it gets to around 2000 rpms it won't go any further. I just ordered and changed the transmission control module. it had a knock sensor code...changed both of those...everyt ime is does this I have to turn the car off and wait 2 or 3 mins and start over...this only gets me a little ways ou the road...does this unit need to be programmed? Did I put it back in wrong? I put it in with the plate facing up, made sure it was fastened in and clamped as well as the DME...I read where it may take a while to adapt so I waited an hour and went outside, sat with it running...raced the engine for a second...let it calm down...wouldnt go in reverse...any suggestions
August 24, 2009
  Followup from the Pelican Staff: I'm confused by your questions here, the transmission computer doesn't give knock codes. If the unit is not going into reverse, then there might be a physical problem with the transmission. It's difficult to diagnose this over the Internet though... - Wayne at Pelican Parts  
JK Comments: I have a 94 BMW, it will not start and was told it is the DME and would cost $2k to fix. Is this something I can replace and where can I get the parts?

Thanks.
August 24, 2009
  Followup from the Pelican Staff: The DME is the computer that runs the entire engine. It may or may not be faulty. The best way to test is to find a replacement one that you can borrow (possibly from a friend's car), and plug it in. Sensors and other problems with the car may result in it not starting - it's not necessarily the DME. Also, depending upon your year car, you may need to have the DME recoded to work with your anti-theft (imobilizer) system. - Wayne at Pelican Parts  
linusb Comments: That last comment was supposed to say...

"so it seems NO power going to the relay" Would this indicate ECM Failure?
August 22, 2009
  Followup from the Pelican Staff: Thanks, got it. - Nick at Pelican Parts  
Linusb Comments: I traced the wire as best I could that leads to the connector to the fuel pump. It's a blue and white lead that looks like routes back to one of the relays not the relay I originally thought!. It's the top relay the one closest to the front of the vehicle. I'm only using a little light probe and not a voltmeter...but I get nothing when I probe the contacts of the relay receptacle. I tried probing the other receptacles one has something to do with the stereo because it goes out when I take out the relay and it does light up my circuit tester. So it seems to power going to that relay?
August 22, 2009
  Followup from the Pelican Staff: Try swapping the relay with the one that leads to the fuel pump and go from there... - Wayne at Pelican Parts  
linusb Comments: WOw! Thank you for such fast response! Can you help me diagnose the problem I'm having. I don't have any power getting to the fuel pump testing for voltage at the the connector that connects to the top of the fuel level sending unit. Fuel pump has been tested and is good. I've swapped out the fuel pump fuse in trunk and the 2 in the glove compartment. Swapped out the relay in the trunk. Still no power. The relay does make a click when the ignition is turned on.

Does this sound like an ECM issue? Could it possibly be something else?
August 22, 2009
  Followup from the Pelican Staff: The relay controls the fuel pump if I recall correctly. If the relay is clicking, then the solenoid is working, but maybe not the contacts. Check the power coming out of the contacts side of the relay - that should go directly to the fuel pump (wires should be the same color, if I recall correctly). That's where I would start - you're on the right track as well so far. - Wayne at Pelican Parts  
Linus Comments: Hi, I see DME ECUs listed for my 1997 model 528i. Some are Siemens and some are Bosch. Are these two separate ECU's for different functions...or just the same part made by different manufacturers?
August 22, 2009
  Followup from the Pelican Staff: The Bosch unit is the DME, the other unit is the transmission computer - assuming you have an automatic transmission. - Wayne at Pelican Parts  
bwh Comments: I'm using 91 octane with octane booster added so it can't be the timing causing the code. The code should only come up if there is a failure of the part, but I've switched sensors and it still comes up...
August 19, 2009
  Followup from the Pelican Staff: 91 with octane booster is probably not enough. Try some race gas (100 octane), and see if the problem continues. If it goes away, then it's indeed the octane. 91 is the highest that is available here in California, but it's still pretty low. - Wayne at Pelican Parts  
bwh Comments: I'm having a problem with a knock sensor code, 1226. With a stock M3.3.1 DME there is no code, but with a performance chip installed I get this code, it comes on at 1800 rpm, even in neutral with no load. I've tried everything to figure out why this comes up to no avail...
August 13, 2009
  Followup from the Pelican Staff: It comes up because your chip is advancing the timing beyond the performance level of the gasoline you're using. You have basically two options - remove the chip or upgrade to higher octane fuel (or add an octane booster). - Wayne at Pelican Parts  
lando Comments: i have a problem, i don't have any sparks to the sparks plug. i need to know if it's the ews or the main brain. can anybody help me?
July 28, 2009
  Followup from the Pelican Staff: I would check the codes and see what it's popping out when you try to start the car. There's another article in our section here about how to read out the codes. - Wayne at Pelican Parts  

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