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Pelican Technical Article:

BMW Crankshaft Position
Sensor Replacement

Difficulty Level: 5
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.
 
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[click to enlarge]

     The crankshaft position sensor is very important to proper engine operation. If it fails or works intermittently, the engine will either barely run or not start at all. Fortunately, the engine’s main computer (DME) will indicate whether or not there are problems with the crankshaft position sensor. (See Project 28 for more details on reading fuel injection error codes.)

     The sensor itself is easy to reach and replace. On some models, however, the wire harness that connects the sensor to the rest of the car is hidden underneath the intake manifold. Remove the intake manifold to replace the sensor. Or, you may be able to access it by reaching underneath the manifold—if you have skinny arms—and removing the oil filter housing first. Either way, getting to the harness connector is not easy.

     To replace the sensor, unscrew the 5-millimeter Allen bolt that attaches the sensor to the engine case. The sensor will always be mounted facing the toothed degree wheel attached to the front of the crankshaft. Depending upon which car you have, you may need to remove the radiator fan (see our radiator replacement article).

     Wire harness routing varies widely from car to car. On the E36 six-cylinder models, the harness is routed through a plastic cover and then underneath the intake manifold. Disconnect the wire harness from the engine, and replace the sensor. Be sure to route the new harness along the same path as the old harness.

     On some E30 cars (1984–1987) 325e/s models, there are two sensors that read the toothed crankshaft wheel. When replacing these, double-check that you don’t accidentally switch the two sensor plugs. They should be color-coded to match their receptacle plugs.

     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.

Figure
Figure 1
The crankshaft position sensor (orange arrow) is relatively easy to get to. However, like the camshaft position sensor, the wire harness connection is hidden underneath the intake manifold. Remove the intake manifold to replace the sensor; or, if you have skinny arms, you may be able to reach in there if you remove the oil filter housing first. The wire harness is integrated into an upper plastic guide (green arrow). The wire disappears beneath the VANOS solenoid and the intake manifold (blue arrow).
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Comments and Suggestions:
Reaper Comments: Hi guys, I have an e36 320i M50 engine. While I was driving the car cut out on me while I was on cruise control, then it started up while I was in neutral and drove for about 3 seconds and it cut out again. Won't start then the battery died. After a battery charge it still wouldn't start. It cranks, gets fuel but wont start. Fuel pump is priming, spark plugs are okay. I was thinking it could be the Crank sensor? Is the crank sensor on a m50 engine magnetic? Please help me as this is my daily driver and has been standing since Saturday night. Any ideas on what else to check or what could be wrong?
October 15, 2014
Shaunesssy Comments: We have a 2001 E46 316ti 1.8 N42 Auto RHD . It runs well drives OK but changes down sharply at low speeds and displays the Transmission warning on the the dash . If the code is wiped it comes back as soon as you move off. The Code reads 146 CAN Engine Intervention interface . The Autobox man says its and engine code , could it be the speed sensor on the engine ?
October 14, 2014
  Followup from the Pelican Staff: Is this fault being read from the DME? If so, there may be a fault in the transmission control module as well. - Nick at Pelican Parts  
Aiika808 Comments: Follow-up 1998 318ti: There's no error code using the OBD2 Scanner
September 28, 2014
  Followup from the Pelican Staff: Thanks, got tit. - Nick at Pelican Parts  
Alika808 Comments: 1998 318ti with 103,000 miles, it crank but will not start. This is somebody's project car and resided to sell it to me. The previous mechanic, replaced fuel filter and fuel pump. I replaced DME/EWS and key chip from well know serviceable. I ohms checked all the wires to/from the DME/relays etc., also voltage check too. I checked the serviceability of all the relays and fuses and battery also. I read most of the comments and pointing out to a bad Crankshaft Position Sensor 100%. I don't have oscilloscope to check the CPS signal. I know, it kinda throw out money but it's cheaper to buy the sensor than to buy an oscilloscope. I am thinking just replace it anyway. My question is should I replace the Cam Sensor too? I appreciate for your input. Thank you.
September 28, 2014
  Followup from the Pelican Staff: Why do you suspect the crank sensor?


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
 
mitch3 Comments: Nick, I had that thought, pulled the cat. convertor off, same problem. The converter is not plugged, I have left it off for now. One thing is bothering me, can't get a good ohm reading from the cps. One would think if it was electronic there would be some kind of backfire, but not happening. Really baffled..
September 16, 2014
  Followup from the Pelican Staff: Resistance is not a good way to test a sensor. I would check the signal to the DME if you suspect it. I would check spark, fuel and compression on all cylinders.
- Nick at Pelican Parts
 
mitch3 Comments: 1987 325is starts great, idles great, will not rev above 2000 rpm. Can hold throttle just below and runs great. No codes show. New in tank pump, goodvcolumn and pressure on external pump, at filter.. new filter as well as new pressure regulator. I'm baffled. All relays have been replaced. Only thought left is maybe a collapsing fuel line.. any thoughts?
September 16, 2014
  Followup from the Pelican Staff: What makes you think it is fuel? If all of your tests show good delivery, I would assume problem is elsewhere.

Does the engine sound restricted? I would check exhaust back pressure.- Nick at Pelican Parts
 
Mike Comments: I have a 2006 BMW 325i. It won't start when the car gets hot. not easy to get gas I got a p0012 code. Could this be the Crank Shaft Sensor?
September 8, 2014
  Followup from the Pelican Staff: You may have a mechanical timing issue. The hot restart issue reinforces my opinion. I would check mechanical timing. - Nick at Pelican Parts  
Busron Comments: I have E60 535i, after replacing with new CPS 258 K ohms resistance value fault codes P0335 and P01747 exist. Engine malfunction and reduced power message still on. Other than that car starts and idles normally.
August 22, 2014
  Followup from the Pelican Staff: Did you use the correct part number sensor for your vehicle? I would start there. If it is correct, check the signal from the sensor to the DME. - Nick at Pelican Parts  
Bunz Comments: Does anybody know where I can get the knock sensor for the E34 M20 12v 525i in South Africa. I have called about 15 spares shops countrywide and was duped by global parts online. I am not giving up as yet however.
August 15, 2014
  Followup from the Pelican Staff: We may be able to ship to you. Give our parts specialists a call at 1-888-280-7799. They can help you find the right part. - Nick at Pelican Parts  
dartman Comments: I have a 1998 328i inline 6 cyl. I have a check engine light thats on when I read the code it sess its one of 3 codes first one is the crank position sensor, I look to see if that is there and there isn't one there on the front by the crank how can i find out if theres suppost to have one the car starts hard but runs fine . I do have one plug after i put a new head gasket in that has know place to plug into.
August 6, 2014
  Followup from the Pelican Staff: The crank sensor is located in the transmission bell housing, under the starter motor. - Nick at Pelican Parts  
sondjata Comments: Car is back and working. The replaced sensor after market was either defective or for the wrong vehicle. The reasons for the ASC-T lights was the sudden change in wheel speed picked up by the computer when the engine cut. No electrical problems and all codes clear.
July 22, 2014
  Followup from the Pelican Staff: Great news. Glad you got it worked out. - Nick at Pelican Parts  
thabang Comments: hi, is it true that the crank shaft sensor can damage the computer box when the cable wires
cover breaks and connect to each other.
July 19, 2014
  Followup from the Pelican Staff: Not likely if the sensor wires are shorted together. However, if it was shorted to a high current battery volt feed it could damage the DME. - Nick at Pelican Parts  
sondjata Comments: The ABS and ASC lights went out when I took it for a drive. Unfortunately the P0335 crank error returned shortly .4 miles, with requisite loss of power and the ASC light came on. Limped to nearby BMW Dealer. Not at all happy about that.
July 17, 2014
  Followup from the Pelican Staff: Check the tip of sensor for debris. If it is clean, check the signal to the DME using a lab scope. - Nick at Pelican Parts  
sondjata Comments: Never mind on the no idle. Turned out the valve cover gasket was mispositioned at the rear one of the semi circles. Reseated that and idle is fine.

ABS and ASC lights still on though. :-/
July 17, 2014
  Followup from the Pelican Staff: Thanks for the follow up. We appreciate it.

What faults codes are present in the ABS?
- Nick at Pelican Parts
 
sondjata Comments: Hello.1997 318iC M44 Had the CSPS go out on me last week. Got the part in beware stripping that bolt!! and decided to change out the TPS, Air temp sensor, Ignition pack. Reassembled the engine, went to start...hard start, rough idle then stall.

NO codes whatsoever. Oddly the ABS and ASC lights are on. I've never seen that combination before. I rechecked my leads. Put back the old TPS and Air temp sensor to make sure it wasn't one of those, no change

If it was a bad lead wouldn't I get a code for a misfire?
Why would the ABS and ASC lights be on? What do they have to do with engine idle?
July 16, 2014
  Followup from the Pelican Staff: I would check for something plugged in wrong or a vacuum leak. If there are no codes, I would suspect the vacuum leak. - Nick at Pelican Parts  
OG Comments: I am resident in South Africa and i would like to know how i can order spares for my 320i.I have checked with your shippin and it seems you dont ship internationally.Any help or advise?
July 8, 2014
  Followup from the Pelican Staff: Find a local (in your Country) BMW dealer. They will have parts. - Nick at Pelican Parts  
OG Comments: I have a 320 and on start up,it continuosly cranks before it finally kicks in.Some say its the crank sensor.I am not sure yet what can be the problem.
July 3, 2014
  Followup from the Pelican Staff: Could be the crank sensor, or the fuel pump, or many other components. 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
 
Trying To Stay Sane Comments: I have a 2003 BMW 325i automatic. Where is the crankshaft position sensor located?
June 24, 2014
  Followup from the Pelican Staff: See this tech article:

http://www.pelicanparts.com/BMW/techarticles/BMW-3-Series-E46/21-FUEL-Crankshaft_Sensor_Replacement/21-FUEL-Crankshaft_Sensor_Replacement.htm - Nick at Pelican Parts
 
Jess Comments: Hi, I have a BMW 530 2002. In first gear I usually have to rev the rpms so it doesn't stall, and then in subsequent gears it doesn't seem to have its normal power. It bucks when the rpms get low while in gear, when for instance, I slow down to make a turn. Once its running, it stalls out/dies with the I shift into neutral. Do you think its the crankcase position sensor? I recently had the crankcase vent value replaced not sure if that matters. Any suggestions? thanks
June 18, 2014
  Followup from the Pelican Staff: If you are able to keep the engine running, I would not think it is the crank sensor. I would check fuel pressure, vacuum leaks and the intake air ducting. - Nick at Pelican Parts  
gerrybmw320 Comments: i have a bmw 320i e36 model.lately i have noticed that when car is hot it is very hard to start. only started when the fuel light was on 2 weeks ago. it starts on the button sometimes then when it is hot it finds it hard to start i also found out that when you disconect the battery for a min it starts straight away. i was told it might be cam shaft sensor or something even more simple than that. it seems to be lacken in power or my imagination not sure. has this ever happened to anyone before.
June 16, 2014
  Followup from the Pelican Staff: Could be a bad crankshaft sensor. 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
 
kash Comments: Hi, i am having problems with my 316ti e46 compact. the fuel pump sometimes does not kick in meaning it doesn't turn on however i have taken to a garage and they changed fuel pump and the same problem not starting happens, it sometimes starts and then works like a dream but the minute you turn it off is like hell to turn back on. the garage says it the ecu/dme??? how can i check and rule out its not the cps!

PLEASE HELP !!
June 1, 2014
  Followup from the Pelican Staff: If it has spark and injector pulse, it is not the CPS. - Nick at Pelican Parts  
canoad56 Comments: Hi, I am in the process of replacing the cps but according to your pic, the orange arrow shows the cps, on my 330i there is nothing there. So I still cannot locate the cps sensor. Could it be the difference in car models. Where is it on the 330i. Could someone help me or lead me please, Thanks
May 29, 2014
  Followup from the Pelican Staff: You didn't mention the year of your vehicle. I guessed at it being an E46. Try this tech article:
http://www.pelicanparts.com/BMW/techarticles/BMW-3-Series-E46/21-FUEL-Crankshaft_Sensor_Replacement/21-FUEL-Crankshaft_Sensor_Replacement.htm - Nick at Pelican Parts
 
john Comments: I have a 97 328i when I start my car in the morning when its cool it starts fine when it warms up and I shut it off for like 10 minutes its starts right up but if I let it sit for like 40 minutes it takes extra cranking to start and I can smell gas..I changed the engine temp sensor but no luck any help would be appreciated thanks
May 27, 2014
  Followup from the Pelican Staff: You could be losing spark or have a rich condition. I would check what is missing when the problem is present. Check for spark, fuel injector pulse and fuel pressure. - Nick at Pelican Parts  
joe Comments: Please can someone help my BMW 318i se auto 2002 has a problem it start and cut power when driving it will also take 15-20 minutes to start again ,it has been diagnose in three difference place's with know cause of the problem.
May 17, 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
 
Artis Comments: Hello there , have bmw e39 520i 1996 model. When engine is worm it goes on 5 , 6 rmp and feels like its going on 4 or 5 cylinders. Had faults on vanos and camshaft sensor. Replaced them both , adjusted timing and vanos withs special tools. deleted faults. started the car still the same problem ,runs on low rpm or dies after give more gas.Comes only camshaft sensor cant get it away.... Could it be crankshaft sensor? coils are ok , spark plugs also , no vacum leaks. dont know what to do anymore , changend pistons , piston rings etc... Thanks :
May 14, 2014
  Followup from the Pelican Staff: Sounds like you are all over the place. I would start by checking for spark, fuel and compression at each cylinder. Start again with the basics, as you may have missed something obvious. - Nick at Pelican Parts  
Nathan Comments: Was driving my car 1987 325e last night and suddenly started to experience the car jumping as if I'm shifting into a lower gear at too high of an rpm. Eventually make it home and check it out this morning to find it doing it very briefly, car dying out and then no problems. Take it my mechanic and he says car is running great.

Was it just a weird thing that happened?
April 29, 2014
  Followup from the Pelican Staff: Automatic or manual transmission? Is the transmission fluid low?

If you experienced a shift issue, there must be a problem. It may not have occurred when the mechanic was looking at the vehicle. You may have to wait until it become more consistent. - Nick at Pelican Parts
 
Nate Comments: i have a 1987 bmw e30 325is. The issue im having is that at 100% throttle my engine cuts at 5500 rpmlike a fuel cut rev limiter. At 90% throttle it goes all the way to 6500 like it should. Could this be the crankshaft sensor? what do you think it is?
April 21, 2014
  Followup from the Pelican Staff: When you say cut, is the RPM being limited by the DME? Or does engine acceleration slow down? Does it continue to climb just slowly? - Nick at Pelican Parts  
e36guy Comments: When the CEL turns on it gives my code 1286. Done via stomp test. I have since then also changed the fuel filter. Since now when it turns on and its stable.. As soon as I give it some gas the car sputters. And sometime stalls
April 21, 2014
  Followup from the Pelican Staff: I would perform a fuel delivery system test. Check fuel pressure, volume and quality.
- Nick at Pelican Parts
 
e36guy Comments: M42 on my 318ic...sometimes it struggles to start and sometimes it fine.. but then CEL comes on and the car gets very weak/sluggish unless I floor it to get the rpms up. Changed o2sensor, cam sensor, knock sensor, and most hoses are new so pretty sure no vacumm leak... Fuel pump working ~40psi... Mabe dirty fuel filter? Or Could it be crank sensor?
April 18, 2014
  Followup from the Pelican Staff: You'll need to perform tests to generate system function data. Then I can lead you in the right direction. I need to know 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
 
Kate Comments: Hello, is it ok if I don't use a genuine crankshaft sensor to replace the bad one? My mechanic told me it would be a waste of money to pay for his labor and use an aftermarket part. Please help.
April 16, 2014
  Followup from the Pelican Staff: Yes. Aftermarket companies make good quality parts. Give our parts specialists a call at 1-888-280-7799. They can help you find the right part.
- Nick at Pelican Parts
 
john Comments: have a 97 328i..car needs extra cranking after sitting for 40 minutes but starts fine when cold..replaced engine temp sensor..auxiliary fan..overflow pressure test came back also had coolant flush and had coolant checked for gases nd it came back fine and when I start the car the check coolant light comes on for a few seconds then goes off also comes on when I shut the car...also need some front struts what kind should I get to without going to dealer to closely resemble what I have now.?
April 16, 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
 
john Comments: I have a 97 328i..car needs extra cranking after sitting for 40 minutes but starts fine when cold..replaced engine temp sensor..auxiliary fan..overflow tank.. and thermostat..had pressure test came back fine also had coolant flush and had coolant checked for gases nd it came back fine and when I start the car the check coolant light comes on for a few seconds then goes off also comes on when I shut the car off
April 14, 2014
  Followup from the Pelican Staff: COuld be a faulty relay, sensor or output. 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
 
Ben Comments: I have an 1987 325i Convertible that im working on. Wont start and isnt getting power to fuel pump and no spartk. Havent tested pulse yet as im waiting on a friend to bring his scope over. One think that kinda threw me off guard. From what i can tell the CPS sensor and Speed sensor are supposed to meet up and connect right next to eachother on a small mounting bracket correct? I found my CPS and it leads up to that point but my speed sensor has got me kinda confused. I traced it from that connection and it wraps around somewhere under the air intake and its cut off clean just sitting there. Then i looked at the bell housing where im pretty sure the speed sensor sensor is supposed to be and its still there. Wire and all. I traced it as well as I could but from what I found it seems part of it runs parallel and is attached the CPS and then runs into a protective sleeve that im pretty sure is where the fuel injector wires branch out at and eventually up into the main harness. I first wanted to make sure I am correct and if either/both test bad and have to be replaced im wondering if there is any logical reason for a previous owner/shop to leave the old sensor plugged in when it will do absolutely nothing? Let me know if you need pictures.
April 10, 2014
  Followup from the Pelican Staff: Where is the CPS you mentioned?

I believe the engine speed and cylinder ID sensors (located at the bell housing) can be replaced separately. - Nick at Pelican Parts
 
john Comments: But if the coolant sensor was bad wouldn't the check coolant light be on all the time my light goes off when I start driving
April 10, 2014
  Followup from the Pelican Staff: Not necessarily. The sensor could be intermittently faulty, temperature affecting function. Or coolant level could be rising when warm, causing the light to go out. - Nick at Pelican Parts  
john Comments: So if the coolant sensor was bad would that cause the check coolnant light to come on..?
April 9, 2014
  Followup from the Pelican Staff: Yes. - Nick at Pelican Parts  
john Comments: Would the auxiliary fan not working cause the coolant light to comeon had pressure test came back fine also its been doing this fo over a year also had coolant checked for gases came back fine and no coolant loss or milk in my oil
April 9, 2014
  Followup from the Pelican Staff: No. The coolant sensor or fan itself could be faulty. I would run a test on the fan using a BMW scan tool. - Nick at Pelican Parts  
john Comments: I have a 1997 328i and the check coolant light comes on when I shut the car off doesn't stay on while driving also when I park the car after driving for a while and come back to it say 40 minutes later it hesitates to start it will turn over a few more times before finally starting one more thing when I check my coolant the tank will be empty then it will slowly rise to its normal level
April 8, 2014
  Followup from the Pelican Staff: I would pressure test the cooling system. If the system does not hold pressure and there are no external leaks, you may have a faulty head gasket. - Nick at Pelican Parts  
Nick Comments: Hey guys! Replacing the headgasket on my 97 328i, so far all of your articles have been super amazing, so thanks! But my car doesn't seem to gave crankshaft ps!!! The mount is there on the front of the engine, but none was present and I can't find the harness end connector! Any other locations I'm missing? Can the car run with only the cam ps? Ran fine before I started, was just burning coolant... Thanks!
April 1, 2014
  Followup from the Pelican Staff: It is likely mounted in the bell housing, near the starter motor. - Nick at Pelican Parts  
hb Comments: where i can find engine number of bmw 760li 2003?
March 29, 2014
  Followup from the Pelican Staff: There will be an ID plate on the side of the block. Look up from below, under the exhaust manifold. - Nick at Pelican Parts  
750 Comments: what is wrong with my car 06 750 has camshaft code and crankshaft codes car does not start.
March 25, 2014
  Followup from the Pelican Staff: What are the fault code numbers?

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
 
Tom Comments: My car was involved in an accident Bmw 318i,2002 318i the car can start but the automatic transmission gear box cant engage in gears. The gear is just in neutral even if you try to change into other gears when the vehicle is on.
March 25, 2014
  Followup from the Pelican Staff: The shift linkage may have been damaged. I would inspect the cable from the shifter to the range switch on the transmission. - Nick at Pelican Parts  
shonny Comments: i have a 1997 bmw 528i, it'll start early mornings when its cold, but then once i start driving it it just cuts off randomly & wont start back right away, sometimes it wont start back at all, changed the fuel pump & it was okay for a day & started doing the same thing all over again, now it just wont start at all & the engine used to make a really loud noise when i drove it, can you help me?
March 16, 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
 
alex325325 Comments: I have a 2001 525 and recently it started sputtering, and the oil light will turn on for a couple of seconds when this happens. Then it will run fine for an hour or a few days, and it will sputter again. Im thinking air leak? Not sure, why it is so intermittent. If you can steer me in the right direction that would help.
February 27, 2014
  Followup from the Pelican Staff: When does the oil leak come on? What is engine RPM, state of engine running?

Being the oil light is coming on, I would start there. I would start by checking and topping up the engine oil if necessary. If it is OK, heck engine oil pressure. - Nick at Pelican Parts
 
malvin Comments: i have a 325i 2004 my ingine light is on so i check it and told me i need camshaft sensor how do i know which one is there two intake and exaust
February 24, 2014
  Followup from the Pelican Staff: The fault code will identify the location. What was the code? - Nick at Pelican Parts  
Wayne Comments: Hi all. Is there any way the exhaust camshaft sensor could drain my battery? I have a 2001 325i that sometimes has no torque when you step on the gas. In doing some research I found it could be the camshaft sensor. AutoZone did a fault test and nothing came up at all. I thought I would try testing it based on an article here, so I removed it. The correct voltage was getting to the sensor, but I was alone and tried using the wrench test on the sensor itself, bit I didn't have a proper back probe and was using a McGyver technique, so I concluded my test was inconclusive. It was getting late, so I put it back together. The next morning the car wouldn't start. I jumped it and it started right up. I drove around a bit, and when i get back I shut it off, waited a minute, and restarted it no problem. Next morning the battery was dead again. Maybe it hadn't charged enough on a 5 minute drive? Maybe something is draining it that I'm unaware of? Would the sensor do that if it was not put back in properly? Seems that can't be unrelated. This is a new battery.
February 24, 2014
  Followup from the Pelican Staff: I cannot see how the camshaft sensor would drain the battery. You may have a parasitic draw. You'll want to monitor the draw on the battery when the vehicle is asleep. Here is a list of the specifications: http://autotechdiagnostics.com /?p=185
- Nick at Pelican Parts
 
Vince Comments: Hi Nick. I need to know Part Number for Crankshaft Position Sensor for BMW E46 318i with N42 Engine. I tried using some online databases but couldn't find it. The last 7 digits for chassis number are FZ93682. I need to know so I can order a new one for my car. Please help.
February 22, 2014
  Followup from the Pelican Staff: This may be it: 13627548994

Give our parts specialists a call at 1-888-280-7799. They can help you find the right part.
- Nick at Pelican Parts
 
kcurtis600 Comments: Just had the crank sensor on my 2002 bmw 530i replaced and within two days, the car won't start unless jumped. Mechanic now says alternator is bad, could that be related to the crank sensor replacement?
February 21, 2014
  Followup from the Pelican Staff: I would say unlikely. Unless of course a wire was disturbed or left off. If you are unsure, inspect the left side of the engine and the alternator for loose or disconnected wires. - Nick at Pelican Parts  
T Comments: I have a 90 325ix. While driving random cut of all power. In the sec it happends check light on and back off. Its a fast off/on. Not every time I drive it. Just today. It cut off for a good 2 sec and kicked back on. ? Any thoughts
February 13, 2014
  Followup from the Pelican Staff: Could be a bad connection to the DME or ignition switch. You will have to monitor power feeds to components to see exactly what is dropping out. - Nick at Pelican Parts  
Aussie Greg Comments: Hi PP guys, have a little E36 318i for my daughter. Was purchased as a dead car, done fuel pump, coil pack and crank sensor and have NO spark at all. Please help. GT
February 11, 2014
  Followup from the Pelican Staff: Is there injector pulse, fuel pressure, compression? You could have a bad sensor or a major engine issue. - Nick at Pelican Parts  
gupta Comments: i want to know whta shuld be done after replacing crank shaft sensor from e36 318is bmw, i must take it for diagnostic process or not? if i dont diagnose it what wil happen to the computer box?
February 10, 2014
  Followup from the Pelican Staff: Once the sensor is replaced, clear any fault codes. - Nick at Pelican Parts  
e46stri Comments: I replaced the crankshaft sensor in my BMW 330Ci and now it will not start. My car cranks but will not fire. Any suggestions?

February 5, 2014
  Followup from the Pelican Staff: Double check the part number and that it is connected correctly.
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
 
maradona Comments: hi i have e36 twincam m42 engin it doesnt go past 90kmp it just backfire when pressed to hard the expect says its crank sonsor wat to do
January 22, 2014
  Followup from the Pelican Staff: I would perform a fuel delivery system test. Check fuel pressure, volume and quality.
- Nick at Pelican Parts
 
Bert Comments: Comments: Hi. I have a 323i m52 motor. I recently replaced the motor with a 325i engine. The old engine crack sensor was located at the rear of the block. The 325i engine crank sensor works from a pulley in the front. Do i just buy a new crank sensor for a 325i engine and fit it to the same plug ?
January 15, 2014
Followup from the Pelican Staff: I have not personally dealt with that situation. I would think you could use the sensor from your old engine. That is if that is the DME you are using.
The old sensor don't work on this engine. I bought a new sensor the steel one, but are not sure if the wires on the plug are the same. I got the vehicle started but engine misfires and can only ref till 2000, more than 2000 rpm it wants to die. Do the engine get the right signal from this sensor if the wires were diffirant
January 20, 2014
  Followup from the Pelican Staff: I would grab the wiring diagrams for the engine you have and the engine the sensor is from. The pin assignments from one to the other may be off. There is the possibility that once wired correctly it will work. - Nick at Pelican Parts  
Bert Comments: Hi. I have a 323i m52 motor. I recently replaced the motor with a 325i engine. The old engine crack sensor was located at the rear of the block. The 325i engine crank sensor works from a pulley in the front. Do i just buy a new crank sensor for a 325i engine and fit it to the same plug ?
January 15, 2014
  Followup from the Pelican Staff: I have not personally dealt with that situation. I would think you could use the sensor from your old engine. That is if that is the DME you are using. - Nick at Pelican Parts  
Sabana Comments: Hi, My BMW 318i recently had mechanical issues. It started stalling when in neutral gear or when I come to traffic stop. The idling gauge goes erratically up and down to a point where the engine shuts down by itself. When it stalls it takes a while to restart, I have to turn the key over several times. I have replaced the camshaft sensor twice but the same issue keeps popping up. Oh, and the engine makes a whistling sound from time. My mech insists the timing belt and spark plugs are ok. Im going out of mind coz of this issue. Could this be a vacuum leak?
January 14, 2014
  Followup from the Pelican Staff: Stalling could be a vacuum leak, however it would have to be quite large to prevent the engine from starting. 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  
MikeW Comments: Good evening,
I've just been told by an 'expert' that I need to replace the crankshaft sensor on my 2004 BMW 318 compact.
I want to try and get this done myself rather than taking to a garage. Can you please recommend somewhere for part and give some clearer info for a novice in how to locate the sensor?
Thanks
January 13, 2014
  Followup from the Pelican Staff: The sensor is located in the crankcase, near the starter motor.
Give our parts specialists a call at 1-888-280-7799. They can help you find the right part.
- Nick at Pelican Parts
 
ac Comments: hi i got a bmw 320i it cranks alright feels like its about to start but no smoke or proper idling sometimes it just cranks and when you check spark it is there but there is too much petrol on the plugs as if there is no spark at all what can it be???.....pick -up sensor,airflow meter,ecu??
January 11, 2014
  Followup from the Pelican Staff: This could be weal spark or leaking fuel injectors. I would check spark using a spark tester. If the the spark tester fires strong, check fuel pressure, volume and quality. - Nick at Pelican Parts  
Kid Comments: Hi there, I own a 2000 323ci with 100,000 miles.
Just recently I ran into an oil pressure related issue.
The red oil light would stay on for around 10 seconds when first starting the car no irregular noises. But just recently I was driving , and as I accelerated hard the red oil light came on and I could hear a lash sound from the front end.
I fired it off. Pulled over, oil level was fine. I couldn't see anything visually.
Later the next day I tried starting it up, it would only crank.
Now Iam completely confused why it would crank but not startup, regardless of a oil pressure issue?
January 7, 2014
  Followup from the Pelican Staff: The oil light may or may not be related to the running trouble. First thing is to confirm the oil level and quality is OK. Then check engine oil pressure when the problem is present. If low during starting only, you may have a dirty oil pickup.

In order to help with the no start. I would need to know what is missing, spark, fuel injector pulse, fuel pressure, etc. - Nick at Pelican Parts
 
jose Comments: How a test a camshaft or crankshaft sensor with a multimitter
December 22, 2013
  Followup from the Pelican Staff: See this tech article

http://www.pelicanparts.com/BMW/techarticles/BMW-3-Series-E90/FUEL-Camshaft_Sensor_Testing/FUEL-Camshaft_Sensor_Testing.htm - Nick at Pelican Parts
 
jose Comments: When you check camshaft or crankshaft sensor with a multimitter a many voltage have bad or good BMW 530i 06 cuz i don't have the service manual
December 22, 2013
  Followup from the Pelican Staff: Not sure what you are asking us. - Nick at Pelican Parts  
jose Comments: I was driving en low oil pressure came on ands the ingine cur off any help
December 19, 2013
  Followup from the Pelican Staff: I answered your earlier question on this topic. - Nick at Pelican Parts  
jose Comments: Can a low oil pressure shot a the ingine off on BMW 530i 06 any help
December 19, 2013
  Followup from the Pelican Staff: If oil pressure is low, the engine could turn off. I would check engine oil pressure using a gauge. - Nick at Pelican Parts  
08bentley Comments: Hi, I bought a 1999 bmw 528i for my son. 1 month after check engine came up P 0412 secondary air control switching valve. I replaced the air control valve from the exhaust manifold and replaced air pump relay plus the hoses that goes to air control valve to electronic valve and hose for the air pump. Now the car crank but won't start, I thought maybe battery since its been more than a week of sitting I charged it overnight try it again the following day the result is still the same. Any idea I would appreciate it.
December 9, 2013
  Followup from the Pelican Staff: This is likely a coincidence. 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
 
dave Comments: i had e46 bmw which is not starting but fuel its pumping and its spark most of th e peoples suspect cranckshaft sensor
December 9, 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. - Nick at Pelican Parts  
ema Comments: my bmw 325i e36 is not sparking n not starting I wanted 2 know if is crank sensor
November 26, 2013
  Followup from the Pelican Staff: if it is missing injector pulse is could be. I would check the DME for fault codes, you may have a code pointing you to the crank sensor. You could also test the reference voltage, ground and signal out of the sensor. - Nick at Pelican Parts  
jose Comments: hi cant you help me i got code P0012 over taming cut be vanos valves bmw 530i 2006
November 25, 2013
  Followup from the Pelican Staff: This could be a camshaft sensor or a VANOS issue. See this tech article for mroe information: http://www.pelicanparts.com/BMW/techarticles/BMW-3-Series-E90/FUEL-VANOS_Solenoid_Replacing/FUEL-VANOS_Solenoid_Replacing.htm - Nick at Pelican Parts  
jose Comments: sorry is cranKshaft n the camshaft r the same sensor bmw 530i 2006
November 24, 2013
  Followup from the Pelican Staff: No the crank sensor is on the side of the block back by the starter the cam sensor is mounted on the cylinder head by the cam gears - Kerry at Pelican Parts  
jose Comments: are the camshaft n the camshaft are the same sensor for a bmw 530i 2006
November 24, 2013
  Followup from the Pelican Staff: No the cam sensors are mounted on the cylinder head by the cam gears and the crank sensor is on the side of the block by the starter - Kerry at Pelican Parts  
jose Comments: Can you tell me is the camshaft sensor location on a bmw 530i 2006
November 23, 2013
  Followup from the Pelican Staff: Standing in front of the engine look at the front of the engine. On the intake manifold side you will see a large solenoid for the oil pressure controlled intake vanos valve. Underneath it is your cam sensor. - Kerry at Pelican Parts  
jose Comments: Hi i check the bmw 530i 2006 got the code po365 po341 poo12np1554 what need to be done
November 23, 2013
  Followup from the Pelican Staff: P0365 is for exhaust cam sensor and P0341 is for the intake cam sensor. - Kerry at Pelican Parts  
Babs Comments: Attached is a picture of the broken guides replaced
November 23, 2013
  Followup from the Pelican Staff: Thanks for the photo to help our readers - Kerry at Pelican Parts  
Babs Comments: My BMW 3i8i 1998 E36 had its crankshaft censor damaged exposing the coils. It was replaced with new one. Major service was also done replacing all serviceable parts including valve, timing chain, guides, top gasket, oil pump and switch, thermostat, radiator etc. The car cranks alright but will not start even thought it is able to restart when given a little push. I was able to drive it for 100km without any problem with a push. The battery is fully charged yet it will not restart normally with a key. Please what is the problem? I need a help.
November 23, 2013
  Followup from the Pelican Staff: You may have a weak battery dropping voltage during cranking. Also it could be a bad main relay. It would help to know if you are missing spark, injector pulse or fuel pressure when the car won't start. - Kerry at Pelican Parts  
Babs Comments: My BMW 318i e36 1998 model got overheated and affected the crank shaft sensor and the top gasket. The car was overhauled and everything including top gasket, radiator, thermostat, crank shaft etc. were replaced. Now the car can't start, but with little push it starts and move correctly without any overheating problem. Please help me solve this problem of inability to start.
November 22, 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.

One thing to look at is if the starter motor was damaged during over heating, check that cranking RPM is sufficient. Should be around 200 RPM. Also check that the coils, etc are getting good voltage when cranking.- Nick at Pelican Parts
 
Shane Comments: If the crank sensor is damaged, will it not allow the automatic transmission to shift gears especially fourth it seems to retard the acceleration. Please help
November 21, 2013
  Followup from the Pelican Staff: No, you will need to check codes in both the DME and the EGS systems to see why you aren't shifting into 4th gear. - Kerry at Pelican Parts  
Shane Comments: If the crank sensor is damaged, will it not allow the the automatic transmission to shift gears? E30 325i. Please help
November 21, 2013
  Followup from the Pelican Staff: No the crank sensor is for the DME not the EGS. This is probably a mechanical auto trans. Check your fluid level in your trans. - Kerry at Pelican Parts  
jose Comments: when crankshaft sensor is bad the computer shot down the ingine for no damage for fhe bmw 530i 2006??
November 21, 2013
  Followup from the Pelican Staff: Not really. The engine shuts down because without a crank sensor or cam sensor reading it does not know when to fire the coils or injectors. The DME can start a car without a cam sensor but not without a crank sensor - Kerry at Pelican Parts  
jose Comments: i what to no were is the crankshaft sensor is for the bmw 530i 2006
November 21, 2013
  Followup from the Pelican Staff: Left rear of engine block under the starter motor. - Nick at Pelican Parts  
jose Comments: bmw 530i 2006
November 21, 2013
  Followup from the Pelican Staff: This is a truncated message. - Nick at Pelican Parts  
jose Comments: The sensor
November 21, 2013
  Followup from the Pelican Staff: What kind of car is it? - Kerry at Pelican Parts  
jose Comments: Were is the location of the crank chaft
November 21, 2013
  Followup from the Pelican Staff: Either in the transmission bell-housing or by the front crank pulley - Kerry at Pelican Parts  
jose Comments: They put a tester under driver n it say crank shaft
November 21, 2013
  Followup from the Pelican Staff: It could also be on the rear of the driver side of the block if it is a six cylinder. A three wire sensor just under the starter - Kerry at Pelican Parts  
jose Comments: Hi cab you help me i have bmw 530i 2006 crank but wont star
November 21, 2013
  Followup from the Pelican Staff: You will have to check for spark, injector pulse and fuel pressure and see what is missing. Is the fuel tank empty? Try arming the alarm and disarming it and see if it starts. If you have a scan tool see if you read an RPM signal while the car is cranking.- Kerry at Pelican Parts  
lee Comments: Bmw 2002 e46 compact 316ti
November 17, 2013
  Followup from the Pelican Staff: Thanks, got it. - Nick at Pelican Parts  
lee Comments: I get no power to pump on drivers side. Its a bmw 316ti e46 compact. Tested the pump wiv battery an crocodile clips it works. Dont know where the relay is. Looked online but on pics ive found the label that say s its the pump is the horn relay. Thought the pics might be labelled wrong but just dont no which one the fuel pump is. Are both pumps powered of 1 relay got power to 1 on passenger side with the ignition 2 on but nothing on the main pump wiv the fuel sensor on wiv ignition on 2
November 17, 2013
  Followup from the Pelican Staff: We don't have your vehicle in the US. On US E46 models, there is only one fuel pump. The fuel pump relay is located behind the glove box in the relay holder. It is the second relay from the left. - Nick at Pelican Parts  
lee Comments: Im getting power to one fuel pump but not the other.. where an which is the correct relay checked the pump on a battery it works. online says its the top left in glove box for fuel pump relay green but its the horn.. which one is the correct relay for the fuel pumps an what colour is it .
November 16, 2013
  Followup from the Pelican Staff: We don't have your vehicle here in the US. but if you give me the year, I can tell where it would be on a US model. - Nick at Pelican Parts  
lee Comments: My bmw wont start e46 compact no fuel checked the relays I have 2 pumps power to the 1 on passenger side but not on the drivers side wiv the ignition on 2 any advice
November 16, 2013
  Followup from the Pelican Staff: I don't believe you have two fuel pumps. You have one fuel pump, then a level sender and a suction jet pump, (which is not an electrical pump). iof you have power to the pump and it is not running, it is likely bad.- Nick at Pelican Parts  
hercia Comments: i have a bmw 316i 2005 model steptronic automatic cuts out when i driving its very dangarous, sometimes its running for weeks then all of a sudden all gages goes down cuts out while trafic is aproaching please help people say it could be the crankshaft censor
November 15, 2013
  Followup from the Pelican Staff: It could be a sensor, a control module or a bad connection. 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 a problem like this. - Nick at Pelican Parts  
Faz Comments: I've got the same problem....
I was driving it fine, stopped at the shops for 5mins and wouldn't start again.
AA came, reset the codes and it started fine and sent me on my way saying it was likely the MAF sensor playing up.

Driving onwards, the engine just cut out and would start again until the engine had cooled off completely.

On a cold start, the car starts fine.... but once its warmed up, it just cuts out again and wont start until its cooled down again.

Since then I've replaced the MAF sensor, but the problem is still there.... the garage has tested the fuel system and injectors, there is no fault there.

The following faults came up;

73 - Speed sensor Injection Pump when he tried to order the part he was told my car doesn't have this part on it???
38 - Air Mass Sensor
114 - CAN-Bus
5 - Commencement of Delivery Sensor

After replacing the MAF all faults have cleared and yet the problem is still there.... the guy at the garage says it could either be the CRANK or CAM...

I can get a Crank sensor for about £25.... but the labour is about £160.... just want to make sure its the crank
Any ideas on what is causing the issue???
November 14, 2013
  Followup from the Pelican Staff: The only way to know for sure if it is the crank sensor is to test it. The crank sensor would cause the engine to stall and not restart. The temperature change making it start also makes me think crankshaft position sensor. - Nick at Pelican Parts  
tito Comments: my 95 318 ti bmw wont crank or start ,look like is no power in the fuel pump or starter,i remove fuses from 31 to 45 and them put them back and the car start with out a problem.help what is the problem
November 3, 2013
  Followup from the Pelican Staff: What are those fuses powering?
- Nick at Pelican Parts
 
Libra Comments: I have an E36 m50, I have fuel I smell unburned fuel when crancking for a while, I hear pulse at the injectors, the relays makes the click sound. I checked the spark and there's non. I'm sure compression is good and the timing. I just don't have the spark.
October 31, 2013
  Followup from the Pelican Staff: Check the fuse for the ignition coils and also check the crank sensor. Scan the DME for faults, this should give you a place to start.
- Nick at Pelican Parts
 
JEFFIO Comments: I HAVE A 2003 X5 4.4..GOES DEAD WHEN STOPPED.CHANGED BATTERY AND BAD ALT.AND BELT...WHAT COULD BE THE PROBLEM...
JEFFIO

October 30, 2013
  Followup from the Pelican Staff: Do you mean it stalls when coming to a stop, or will it just not stay running at all? Have you checked the fuel pressure, scanned the DME for faults?
- Nick at Pelican Parts
 
karlton Comments: it cranks but will not start
October 21, 2013
  Followup from the Pelican Staff: 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
 
Makere Comments: Help please! I have a 1999 528i BMW. The battery goes flat so I jump start it and leave it running for about 10 minutes. The next day it starts immediately, but then an hour or so later it's flat again. Any ideas please!!!!!
October 20, 2013
  Followup from the Pelican Staff: You should perform a charging system test. The alternator may not be charging. If the alternator is functioning normally, check for a parasitic draw. - Nick at Pelican Parts  
karlton Comments: hi im looking for help with my bmw x5 3.0d sport 2002 problem being starting it from cold a bit sluggish but when ive used it and engine is warm it wont start until engine has cooled down advise please
October 17, 2013
  Followup from the Pelican Staff: When it doesn't start what is going on? No crank, it cranks but won't start?
- Nick at Pelican Parts
 
g4101st Comments: All,

CLEAN YOUR CRANK POSITION SENSOR or REPLACE IT if necessary for some drivability problem solutions!!!!!! = Make it part of the diagnosis steps for the e30 Motronic Fuel Injection System.

Great tech comments and thanks for all the input. I wanted to share my 3 week pursuit weekends and some nights trying to figure out the drivability problems with my son's 1990 e30/325i sedan. Great car with just short of 200k on it and everything works.

We had a drivability problem for many months and since I live in VA and just made it through the hot summer, now with cooler mornings and nights, the problem became more pronounced.

We went through the entire ignition and fuel system to find the stutter problem with the car at high speeds and when cold. The problem still existed some times when it was warm but mostly when it was cold first start of the day it would stumble and also intermitently on the open road at highway speeds.

We performed a complete tune up, replaced all intake boots, vacuum lines, cleaned the MAF meter, cleaned the IAC and the Throttle Body as well as checked fuel pressure, etc. It was time to do most of this by the way.

We found by reading some of the othwer BMW forums and PP forums that cleaning the CPS may make a difference. Cleaned it this am in the dark at 6:30 AM with a flashlight and brake cleaner and it started up and ran like a new car.

Should have been one of the first checks I have learned and will go through all the connections this weekend and clean and coat with dialectric grease.

Thanks PP for keeping us on the road!

Keep up the great work!!!!!
October 3, 2013
  Followup from the Pelican Staff: Thanks for the additional Info. We appreciate it.
- Nick at Pelican Parts
 
joe Comments: I have taken my 1998 318i e36 to 6 mechanics and no obe knowd hoe to clear fault on crank angle sensor need help ghis car is driving me broke
September 27, 2013
  Followup from the Pelican Staff: What is the fault code number? - Nick at Pelican Parts  
ayu Comments: Hi! I have a 318i e46 n42 engine. Does the crankshaft sensor problem has something to do with poor engine oil? Do I have to change my engine oil in order not to have those kind of errors again.? Or just simply replace crankshaft sensor? But I noticed the oil is colored dark already. Thanks for the advice.
September 18, 2013
  Followup from the Pelican Staff: The condition of the oil shouldn't have an effect on the crank sensor. You can just replace the sensor.
- Nick at Pelican Parts
 
Peter Comments: I have an E46 325xi that I accidentally ran through a puddle and hydro locked it, I removed the plugs cranked out the water and now it starts. However it starts hard and throws codes P0727 and P0335. Which are crank shaft circuit A malfunction and Engine speed circuit no signal. I removed the crankshaft sensor but I was wondering if there was a way to test it with a multimeter, I have heard some say that you can test pins 1 and 2 and read the ohms?
September 13, 2013
  Followup from the Pelican Staff: There is a really good chance that you bent the rods, do a compression test, if any of the cylinders are low you are going to have to remove the head and inspect for a bent rod.
- Nick at Pelican Parts
 
ktmjunkie Comments: I have a 1989 325i starts good, runs beautiful but fuel shuts off @1800 then turns back on as long as the engine stays below 1800 rpm it does not die. thanks
September 13, 2013
  Followup from the Pelican Staff: Check the fuel pressure it should be 43 psi at idle, you are also going to want to check the volume, it should be one ounce per second. Look for a clogged fuel filter.
- Nick at Pelican Parts
 
newbie Comments: Hi there just been quoted £261 to change a 'lift control sensor' on a 2005 bmw 320I and was wondering what it is as no warning lights on dash?
September 7, 2013
  Followup from the Pelican Staff: It measures the position of the valve lift shaft, if there are no faults, it could be leaking oil.
- Nick at Pelican Parts
 
ALAUR Comments: Hi,
Long story short my car 2008 528i BMW started acting funny and then on my board it said 'Malfunction on Transmission', I got it scanned and it said that the crankshaft sensor needs to be replaced. My dad is a mechanic but he does not work on BMW'S. Can you please tell me where is is located???? Thanks so much!!!!!
September 6, 2013
  Followup from the Pelican Staff: It should be on the back of the engine block under the starter on the drivers side. - Nick at Pelican Parts  
patrick Comments: i changed my 3201multi valve and rteplaced it with a 525i enjin now it cranks but wont start.
September 4, 2013
  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
 
Scooter Comments: I have a 2006 325i. It has recently started to sputter out on me. replaced the fuel pumps and spark plugs, general maintenance good. Still stalls out. Almost feels like bad fuel but that isn't the issue. Small electric plug on top front of engine is taking on small amounts of oil and may be shorting out the electronic reactions. I am not sure what that plug is, but looks like you have to remove valve cover to replace it. Anyone have experience with this. When I clean it out with brake cleaner, it will run for 20 miles, but then the small amounts of oil show up and seem to short it out. Any thoughts on what that plug is and whether it could be causing all this havoc? Thanks
September 3, 2013
  Followup from the Pelican Staff: The plug is for the sensor for the valve lift adjuster, if the sensor were shorting out it would set a fault code. The fact that you are spraying brake clean and the engine smoothes out means you could have a vacuum leak or a faulty crankcase breather valve. I would check both,
- Nick at Pelican Parts
 
Tanya01 Comments: Hello,

My 318ti 2002 Car wont start, but cranks.
I Changed fuel pump and still wont start.
How do i test Spark plugs, fuel injector and fuel pressure? What should the volume be when testing the above mentioned.

PLEASE HELP!!!
September 3, 2013
  Followup from the Pelican Staff: Fuel pressure should be around 50 -55 psi, To test for spark you need to get a spark tester, it looks like a spark plug with a grounding clamp on it, and install it on one of the coils, and have someone crank the car while you look for spark. Also check to make sure your air box is not clogged. It has to be missing either spark, fuel pressure, or air.
- Nick at Pelican Parts
 
jessica Comments: hi I really need some help I have a bmw x5 3.0d 2005 automatic gearbox when I turn on the engine its ok after 5 min the gearbox light turns on and it get stuck only on one gear the 4 gear if you try to switch of and on it wil make the same exact thing I tried to go for the computer check and who tell me I need to change gearbox and who tell me change oil and filter and too many others thing can you give me some help
August 28, 2013
  Followup from the Pelican Staff: I would start by scanning the trans and engine computers with a scan tool and look for the faults stored, this will give you an idea where to start
- Nick at Pelican Parts
 
Jena Comments: I have a 1998 BMW 318i that won't start only when it's cold, after trying over and over again, eventually it will start. We have changed the valve cover gasket, spark plug wires, numerous ignition coils, thermostat, mass air flow sensor, and it still doesn't want to start when cold. Once it's warm it runs great! Starts in the first try. Could it need a crank shaft sensor too? The mechanic has told me the fuel injector is working properly, so we have not changed anything with it. I've been dealing with this issue for months, and just want a car that starts in the morning, or after sitting all day! Any help is appreciated!
August 16, 2013
  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. Start with fuel pressure and spark fisrt.
- Nick at Pelican Parts
 
Boots Comments: I have a 328ci year 2000 and have had symptoms of
Starting on second attempt and loss of power. I
Have had the camshaft sensor replaced but the
Fault code keeps coming back. Fitted another
Camshaft sensor but same problem. Code indicates
The camshaft sensor is the problem.
Please can you help
August 12, 2013
  Followup from the Pelican Staff: Could be related to the vanos unit not functioning correctly, unplug both vanos solnoids and see if the starting problem goes away, if so replace the vanos unit.
- Nick at Pelican Parts
 
azi Comments: hi all
i have a BMW E90 320i. with no injector pulse. i tried using a quick start aerosol and the car started briefly 1 second with a huge pinging noise and died. what can the problem be? Is there a relay which controls the injector pulse? There is fuel pressure at the rail, but on many attempts cranking the engine, it would not start. CAN ANYBODY HELP???
August 1, 2013
  Followup from the Pelican Staff: Injectors are controlled by the DME, there is also fuses that power the injectors in the ebox where the DME is, start by checking the fuses, ans scanning the car for fault codes.
- Nick at Pelican Parts
 
Cr4ig_2k6 Comments: Hi, i wondered if someone can help me, im desperate. I have a BMW 316ti Petrol, 2002. It has developed an idling problem, there seems to be a loss of power, and the car will refuse to idle. I have changed the Crankshaft sensor and the Camshaft sensor, still no luck. Fault codes are stating Camshaft sensors, but these are reading voltage changes? Does anyone know what it could possile be or what to check next? Any help will be greatly appreciated, Send me PayPal details and i will pay you if you're right!
July 31, 2013
  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
 
Bclaugh Comments: 1990 bmw 525i. Changed the oil and spark plugs. It ran great when I test drove it. Parked it over night and later that day started right up. Took off and got to the stop sign and went to take off and it died. It turns over but won't start. What could it be?
July 29, 2013
  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
 
fantomas Comments: I have changed new crankshaft sensor BMW-1986-325ebell housingnot starting, you can listen but not runs. do I need to re-program with the switch?, what else? distance?
July 28, 2013
  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
 
jonno Comments: Hi,so replaced the cranksensor on my Bmw 318i,Car starts perfictly now,Checkd the housing and idle sensor there is no fault with them,car struggls to idel very rough sounds like it has a miss fire when ideling and keeps cutting out,does the same when you keep the rpm up very shacky and rough as soon as you leave the gas it just cuts out again???Could my spark plugs maybe be the koZ of this???Since the car was running perfictly be4 until it lost spark and I replaced the cranksensor
July 20, 2013
  Followup from the Pelican Staff: The spark plugs could be fouled, remove a clean or replace, then check to see if You could have a vacuum leak or a faulty crankcase breather valve. I would check both, inspect the engine for a cracked intake boot, vacuum line or leaking gasket. You can also check the crankcase vacuum, this will help you diagnose the crankcase breather valve.

- Nick at Pelican Parts

 
ronnie Comments: does a bmw 318 1987 model have a crankshaft sensor
July 20, 2013
  Followup from the Pelican Staff: - Ken at Pelican Parts
Yes, it does. The engine computer uses it to help control the ignition and fuel injection.
 
dly Comments: hi. i have a 94 bmw 318i that will not speed up even when i floor the gas pedal and the rpm is at 2000
July 19, 2013
  Followup from the Pelican Staff: Sounds like the trans might be slipping.
- Nick at Pelican Parts
 
jonno Comments: What could I replace in the case of the idle control being faulty?
July 17, 2013
  Followup from the Pelican Staff: Without knowing your vehicle type. It could be the idle control valve, or the throttle housing. Depending on equipment and engine management type. - Nick at Pelican Parts  
Malik Comments: Hi, I've a 2002 318i BMW Automatic, I was driving down the other day and all of a sudden the power cut from the engine but then the car started again. While I was approaching a traffic signal engine completely shut down and after couple of attempts it started again. Can you please explain what could be the problem with the car?
July 17, 2013
  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 camshaft or crankshaft position sensor could be failing. - Nick at Pelican Parts
 
jonna Comments: Thanx 4 the repli will clean the surface and see how it goes thanx 4 the help hope I get it rite
July 17, 2013
  Followup from the Pelican Staff: Glad we could help. - Nick at Pelican Parts  
jonno Comments: Hi I have a bmw 318i box shape 1996 had problms with it Not starting no spark out of coil,changed crank shaft pully sensor,car starts now but cuts out when driving only when you gear down???what could it be???
July 16, 2013
  Followup from the Pelican Staff: Your idle control could be letting the car stall on a decel or the crankshaft is "walking" around as you downshift. Try to clean the surface where the crank sensor mounts and re-install it - Nick at Pelican Parts  
kevin Comments: Looking to purschase a knock sensor for a. Bmw e30 320 I 1989bmw urgently
July 13, 2013
  Followup from the Pelican Staff: Give our parts specialists a call at 1-888-280-7799. They can help you find the right part. - Nick at Pelican Parts  
bedz Comments: my car is officially doing my head in I thought it was camshaft sensors I've had a diagnostics and know there trying to tell me that is my electrics is theee gonna b an end to all this madness help rough price anyone
July 5, 2013
  Followup from the Pelican Staff: Not sure what you are looking for a price on. You're best bet is to call a few local shops and ask them to estimate the job. - Nick at Pelican Parts  
bedz Comments: Hey nick thanks for the reply I took out the camshaft sensor and it was covered in thick black oil on both sensors so I cleaned them and she gunk off and cleaned rhe housing where they sit and that was covered in gunk aswell so probably the last owners aint looked after it its is running a lot better now but got it booked in for an engine flush and full service do u think I should do an engine flush ?? Thanks again for ur help
June 26, 2013
  Followup from the Pelican Staff: Engine flushes can be hit or miss. I would do a few short interval oil changes and see if that helps. It might help to remove the valve cover and inspect the engine, see how clean it is. - Nick at Pelican Parts  
Curtis Comments: I replaced the pvc and the CPS and now the car wont start 1999 5281
June 25, 2013
  Followup from the Pelican Staff: Did you leave something disconnected? I would inspect the wiring aroung the intake and see if something is not connected or broken. - Nick at Pelican Parts  
Kiley2013 Comments: Hi can u help me with the location of the crankshaft sensor on a 2002 bmw x5 3.0d thanks anyice would help loads thanks once again
June 21, 2013
  Followup from the Pelican Staff: It is on the left side of engine, near the starter motor. - Nick at Pelican Parts  
beddz Comments: Hi my bmw 316 ti se keeps cutting out it will take ages to restart again then il dribe done the road and it will cut out again I only live 5 mins from work diving but toke me over an hr to get home any help will be appreciated
June 20, 2013
  Followup from the Pelican Staff: If you engine doesn't start, you'll want to check spark, injector pulse and fuel pressure when the problem is present. This will help you pinpoint the problem much easier. If you have good fuel pressure and are missing spark and injector pulse, suspect the crank sensor. CHeck the DME for fault codes. - Nick at Pelican Parts  
nino Comments: I have a 330ci with misfire cylinder 3 and 4 with fuel cutoff,error p1347 and p1349 I have replaced several parts with no result including rebuild the vanos, if I disconnect the crankshaft sensor on the left of the vanos the car runs good with no error except for the crankshaft sensor fault. could this mean that I have a faulty sensor
June 19, 2013
  Followup from the Pelican Staff: You are disconnecting the camshaft sensor if it is near the VANOS actuator. The fault codes indicate a misfire severe enough to damage the catalyst. I would check spark, fuel and compression on the cylinders with the codes. With no other fault codes to go on, you have to start with the basics. - Nick at Pelican Parts  
Giggggerdy Comments: Hi I have a bmw 316ti compact 2003 and now its developed a crankshaft sensor fault just wonder if some one could tell me where it is
June 16, 2013
  Followup from the Pelican Staff: The sensor should be on the left side of your engine, near the starter motor. - Nick at Pelican Parts  
Connor Comments: Hi there, I have a 1984 bmw 318i and it has spark, gas, and compression but the car does not start. Would the Crank sensor be an issue in this case? Im at a loss at this point... I would think the sensor to be fine if I have spark? Also has new coil, rotor, dizzy cap, plugs, wires, all done about 1k miles ago. Any help is appreciated Thank you.
June 14, 2013
  Followup from the Pelican Staff: Do you have injector pulse? If so, the crank sensor is fine.


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. Your engine has to missing one of these things to have a no start condition.


- Nick at Pelican Parts
 
Ant Comments: Hi recently i changed my spark plugs and now my 92 bmw 318 will not start it cranks but no spark it seems. I tryed putting the old ones back in and it was bogging bad and the rpms went real high and dropped and the car died. There is fuel but seems no spark. I possibly flooded engine trying so much to get it to start and the fuel went in my oil @_@ i will be changing this weekend. The coils did not get crossed all i can think is the crank sensor went out? I really have no clue and i don't have an obd 1 scanner and the pedal trick wont work. I am honestly stummped i have been researching for days now and i am lead to the crank sensor but how could it go out after changing spar plugs. I also checked gapping and re-gapped to. 032. I pulled the dme out and checked that as well and it is good. Can anyone help please, i have a crank sensor and new plugs coming on Friday thanks to pelican. Thanks in advance.
June 11, 2013
  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. if you are missing both spark and injector pulse, the crankshaft sensor may be the culprit. - Nick at Pelican Parts  
A Comments: I am having problem with my BMW 325xi 2001, It recently started having problems in the morning. I go to start it and it starts for a half second then shuts off then I try seconds after and it fires up with no problem at all, on some days it will fire up seems like it wants to turns off then runs but it seems as if it happens only in the mornings. I had auto zone run the check engine it came back as crankshaft senor does this sound about right...helppp before I have to go to the dealer and get charged a arm and a leg.FYI almost a year ago I had a fuel pumped change not sure if that matters.
June 10, 2013
  Followup from the Pelican Staff: I have seen crankshaft and camshaft sensor cause the problem you are describing. You are better off testing the sensor when the problem is present to be sure. - Nick at Pelican Parts  
Barish_e36 Comments: My car e36 M3 has hard time starting first thing in the morning and first time its hard to start but second time fires right up is this the crank sensor or cam sensor any help would be appriciated?
May 28, 2013
  Followup from the Pelican Staff: If it is only having trouble the first attempt, but then starts. i would check fuel pressure, volume and quality. - Nick at Pelican Parts  
sabu Comments: Hello I have a 328is 1996 and just replaced the cylinder head with a reconditioned one from another car. Everything on the new head including valvetrain, camshafts, and all the sensors. Once everything is back together by mechanic tried to start the car, it cranks and begins to putter, but never starts. Is the problem the crankshaft position sensor? He says the computer doesn't show him any codes
May 22, 2013
  Followup from the Pelican Staff: I would assume the starting problem has to do with the recent repair.

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
 
viTO Comments: i have bmw 320 in italy what i can LHD TO RHD
May 11, 2013
  Followup from the Pelican Staff: Sorry, I don't understand your question. - Nick at Pelican Parts  
The Dude Comments: Hi, I have a '95 318ti and my water pump blew out on me so I replaced that. Then while testing the pump after installing the car overheated and all of my relays got fried, so I replaced all those and now my car still wont start. I know I should also replace the thermostat when replacing a water pump but could that be why it won't start?
May 4, 2013
  Followup from the Pelican Staff: It's possible your thermostat is also faulty. However, if you overheated your vehicle you could have a aheadgasket issue as well.

When you say all of your rel;ays fired, I am stumped. This would not happen for no reason. DId you jump start vehicle and reverse the cables? If so you could have caused damage to your vehicle electrical system. - Nick at Pelican Parts
 
sickmike Comments: Hi, I am having a problem with my e30 and i think it might be the CPS.. It wants to start sometimes and when it does it holds idle for 1 second.. I can spray starter fluid and it will go.. so I'm kinda confused. Could this be a CPS issue?
May 2, 2013
  Followup from the Pelican Staff: If it runs when you add fuel, then engine has spark. This would tell me the crankshaft sensor is fine. The I would check if you are missing fuel pressure or fuel injector pulse. - Nick at Pelican Parts  
andriy riccardo Comments: my e 90 n47 2007 320d with no warnings atall after doing some 15 miles ok its starts to shut off over 2000 revs any help
April 14, 2013
  Followup from the Pelican Staff: Is the check engine light ON? I would scan the DDE using a BMW scan tool. - Nick at Pelican Parts  
PETER Comments: MY BMW E36 1997 MODEL WOULD NOT START AFTER PARKING AT WORK IN THE MORNING 7:30. IN THE AFTERNOON 5PM THE CAR WOULD NOT START, I HAD A PROBLEM OF OVERHEATING WERE SOMETIMES THE RADIATOR FAN WOULD NOT KICK START AND SOMETIMES KICK START. I CHECKED THE FAN IS OKAY BUT THER CAR WOULD NOT START. WHAT COULD BE THE PROBLEM?
March 25, 2013
  Followup from the Pelican Staff: Check to see if you are missing spark or fuel. - Nick at Pelican Parts  
85e30man Comments: hello i have a 85 318i it was running a little rough so i changed coil ran great for a hour then went over train tracks pretty rough and hard then my car mad a back fire noise then it turned off now it jus cranks and it back fires but it wont start any clues
March 3, 2013
  Followup from the Pelican Staff: You'll have to see what is missing, preventing the engine from starting. Start by checking spark and fuel. let me know what you find. - Nick at Pelican Parts  
gilbert Comments: have 1993 318i i replace the crankshaft sensor, fuel injector, spark plugs, fuel pump, relay, spark plug wire, is cranks but won't start what could be the problem?
January 27, 2013
  Followup from the Pelican Staff: I would check engine compression next. Does the engine have spark and injector pulse? - Nick at Pelican Parts  
shar Comments: hi have a bmw 316s that wont start driving it back the other day and it started missing and then just died theres no spark can you help
January 10, 2013
  Followup from the Pelican Staff: Check injector pulse also. If you are missing both, you may have a bad crankshaft sensor. - Nick at Pelican Parts  
mick64 Comments: sorry i meant crankshaft sensor removal for 2002 1.8i auto please and i need it fast please,i know the sensor is at the rear of the engine under starter motor please
December 21, 2012
  Followup from the Pelican Staff: That engine is quite different than anything we have here in the US. I would guess that you can access the sensor from below the driver side of the engine, near the starter motor. maybe someone in our community can offer more help. - Nick at Pelican Parts  
Mark Lawing Comments: 2004 525I when cold car starts and runs for about a minute and then cuts off. Will restart and continues to cut off until engine reaches operating temperature. DTC light comes on. Any help is appreciated! Thank You
November 9, 2012
  Followup from the Pelican Staff: Start by checking the fault code stored in the DME. This information will help you pinpoint the problem. - Nick at Pelican Parts  
sammie Comments: Thanks for all the relevant info I got inconnection with cranksensors. Keep uP ,its twelve u
October 25, 2012
  Followup from the Pelican Staff: Thanks for the feedback. - Nick at Pelican Parts  
M42 Comments: Hi I am confused by the crank position sensor I can't figure the exact location becAuse my car has a M42 engine. a sensor on the front of engine and another sensor on the crank its self.
October 7, 2012
  Followup from the Pelican Staff: The camshaft position sensor is located in the timing cover. The crankshaft position sensor is located at the rear of the crankcase near the transmission bell housing. - Nick at Pelican Parts  
bull Comments: my 1986 bmw 325e will run for a short while then shut off It will not start no fire at dist then after awhile it start and run for another 10 or 20 miles then stalls again
September 10, 2012
  Followup from the Pelican Staff: Check the crankshaft sensor (engine speed sensor) located at the bell housing of the transmission. If this sensor fails you will lose spark. - Nick at Pelican Parts  
hebron Comments: nov/87 325i conv. no start. removed and cleaned sensor covered with engine sludge and reinstalled with no luck. vehicle has been strong runner with maintained timing belts, etc. stopped running while waiting for light, and never restarted. approx. 150, 000 miles on car.
July 22, 2012
  Followup from the Pelican Staff: Check what you are missing. You need spark, air and fuel. You can check spark with this tool: http://www.pelicanparts.com/BMW/catalog/shopcart/TOOL/POR_TOOL_CAT447_pg9.htm and check fuel injector pulse with this set http://www.pelicanparts.com/BMW/catalog/shopcart/TOOL/POR_TOOL_CAT447_pg9.htm or something similar. Once you identify what is missing I can help you further. - Nick at Pelican Parts  
Harry Comments: Hello I'm lookin for a bit of advice I have a 1986 Bmw e30 325e its getin fuel but theirs no spark at the coil but its getin power changed it still no joy so changed ecu and crank shaft sensor distributor cap still notin can't figure it out
July 11, 2012
  Followup from the Pelican Staff: Which crank sensor did you change? Your year could have a combined sensor near the crankshaft pulley or two at the transmission bell housing. - Nick at Pelican Parts  
Gee Comments: I have a 1984 633csi BMW. i been wondering were is the cam sensor located.Would that stop my fuel pump from coming on? then another thing how many cam sensor on this model? Is the speed sensor same as cam sensor, if so were that be located? one more thing were is my crank sensor on this car to? Hope to hear from you soon
May 16, 2012
  Followup from the Pelican Staff: Your vehicle uses a reference sensor and a TDC sensor. Both located in the bell housing of the transmission. These would not stop the fuel pump from turning on. You'll want to check your fuelpump relay. - Nick at Pelican Parts  
JR Comments: I have a 1989 BMW 325IS- Does the CPS read each tooth on the wheel or is there a certain piece on the wheel that the CPS reads? If so what does it look like?
March 19, 2012
  Followup from the Pelican Staff: The crankshaft position sensor reads the entire toothed wheel. When the toothed wheel passes by the sensor an A/C voltageis created. - Nick at Pelican Parts  
gonzo Comments: where is cranksensor bmw318 ci se e46 52 reg
March 16, 2012
  Followup from the Pelican Staff: The sensor is located at the fron of the engine. It reads a toothed wheel on the crankshaft pulley. - Nick at Pelican Parts  
virgomomma30 Comments: Hi I have a 02/95 BMW325i and it wont crank was told it was fuel pump and just replaced it but it still wont crank... what else she we try or check, i have swapped out relays and that didnt help.
February 13, 2012
  Followup from the Pelican Staff: When you say it won't crank, do you mean the engine will not start or it doesn't turn over?

I would check for spark, injector pulse and fuel pressure. Once you know what is missing you will be able to pinpoint the problem.- Nick at Pelican Parts
 
Peter Comments: BMW dealer diagnosed intermittently dying E39 528i engine and replaced fuel pump & filter - didn't fix it. Control unit, flow sensor, plugs and everything else checked OK. Can it be anything else other than the crank position sensor? This doesn't show up clearly as a code error. Any advice appreciated. Great to have Pelican around to help so many owners. Thanks Pelican!
February 13, 2012
  Followup from the Pelican Staff: Intermittent problems are tough.

If you can recreate the issue. Check the engine for sprak, injector pulse anf fuel pressure. If you are missing spark and injector pulse but have fuel pressure you may have abad crankshaft sensor. - Nick at Pelican Parts
 
Correll Comments: I cannot find the crank sensor on the 2006 325i. please help!!!
January 30, 2012
  Followup from the Pelican Staff: It is located on the left side of the engine below the starter. - Nick at Pelican Parts  
anne Comments: Can anyone help with an 85 bmw 318i? Sensor/ looks like flat coiled brass? sensor, located to rt front of main air intake box, has lost it's lid airbox was not connected properly by last owner and I don't have cover to compare it to/ looks like MAP sensor guessing but don't know and don't want to spend so much without KNOWING/ Please fill me in if possible. thanks!
December 14, 2011
  Followup from the Pelican Staff: Your description isn't ringintg a bell. Can you share a photo of the sensor? - Nick at Pelican Parts  
PJwood Comments: Hi, I have a 1997 328i. The check engine light is on, and the code says crank position sensor. I bought one from Pelican and went to change it, and there is not one there. The hole for it and its mounting bolt is there, but no sensor. Did this car not come with one?
November 17, 2011
  Followup from the Pelican Staff: Check to see if your model has the crankshaft sensor mounted near the flywheel of the engine. Check the left side of the engine, near starter. - Nick at Pelican Parts  
ken Comments: I have a 1998 540i and it usually kills the idling after i start it. for it to idle normally i have to give it some revvs and then it is fine. i was told that it is the air mass flow meter and the cam sensor and i bought them. when the sensor is plugged in it misses and the revs go up and down without me depressing the accelerator.
November 3, 2011
  Followup from the Pelican Staff: Are you stating the engine is stalling when you start it? Check the DME for fault codes. You could have a bad idle air control valve or a torn intake air boot. - Nick at Pelican Parts  
Kamikaze Comments: Hi, your bonus photos do not have link. Can you make it work. Thanks
October 22, 2011
  Followup from the Pelican Staff: Sorry, for this particular project, there aren't any additional bonus photos at this time. - Wayne at Pelican Parts  
jimbo Comments: I have an 87 BMW 535 i that wont get spark.I was told by a mechanic that looked at my car for .5 an hour that it was 1 of the crank sensors. I have replaced both the crank sensors. the sensors were out of a wrecked vehicle so we are sure those parts werent what killed that car. still no spark. How many other parts could be the culprit.
September 22, 2011
  Followup from the Pelican Staff: I would try new parts. The reference sensor and cylinder ID sensor are both located at the flywheel. - Nick at Pelican Parts  
lazaluks Comments: Hello anyone who can help me,I have a 2002 318i bmw,it doesn't rev up and when u are driving up hill its doesn't have power,I have changed the airflow meter and the petrol pump,bt it didn't help.now the mechanic says its a pick up sensor which is the crack sensor,please help what can be the problem,ans on lazaluks@webmail.co.za,tx

September 21, 2011
  Followup from the Pelican Staff: Have you checked for excessive backpressure? You could have a plugged exhaust system. Start by checking backpressure. Then fuel pressure and volume. - Nick at Pelican Parts  
jbird Comments: i know my crank shaft position sensor is bad. Now my car is knocking. Mechanic says he did compression test. Says better look for new motor. But want advice. Can the cause of the knocking be related to the bad sensor
September 16, 2011
  Followup from the Pelican Staff: is it a mechanical knock? I would say it is unlikely that a bad crankshaft sensor is creating an engine knock. Unless it is skewing the timing and you are hearing engine detonation. Still, that would be a stretch.- Nick at Pelican Parts  
Cloud Comments: Thank you all for advise!
August 15, 2011
  Followup from the Pelican Staff: No problem! - Nick at Pelican Parts  
Pete Comments: I have an 84 325e, just bought it. I just picked up the bentley 3 series manual and can't find the sensor that's in the rear diff in this book. Is this sensor for speed? The book says the speed sensor is up by the transmission. So which 1 is for the speedometer? My speedometer isn't working along with the mileage read out.
Thanks, any help would be great.
I can't wait to check out this book also.
August 13, 2011
  Followup from the Pelican Staff: The sensor in the diff does speed. Before replacing it, check that all your fuses are in good shape. - Nick at Pelican Parts  
woodki1 Comments: I have a 2006 325 BMW that will not run and has no power. Also barely cranks. Hooked up to computer and no fault codes will display. driven car and hooked up to computer still no fault code and still runs horrible. any advice?
August 12, 2011
  Followup from the Pelican Staff: Be sure the scan tool you are using is advanced enough to read all systems. There could be fault codes stored that you cannot access.

If engine runs bad and no fault codes are stored, check fuel control and fuel trim. Confirm engine has good spark, fuel and compression. - Nick at Pelican Parts
 
Alex Comments: Need Help! 2008 Regular Clubman with 65k miles, after about 30 minutes of running the car wants to stall at redlight or when slowing down, sometime the engine light will flash on. If I park for 20 minutes the problem goes away until I drive for 20 minutes again. Took car to dealership, changed plugs, coils, and cleaned injectors, code was #2 cylinder misfire, compression check showed no problems! They dealership wants to pull the #2 and cylinder and want 1500 dollars but will not promise this will fix issue! ANY help would be greatly apreciated! FYI car only started doing this after dealer changed thermostat and water pump due to engine light 3 months ago! I originally though I had gottne some bad gas, has been getting steadily worse, no coolant leak, and the dealer also did a smoke test with no bad results.
August 11, 2011
  Followup from the Pelican Staff: If engine compression is good across all cylinders, perform a fuel system test, check fuel pressure, volume and quality. Monitor fuel pressure when good, then as the problem develops. Look for a change. I would start here as it is an easy test to perform. - Nick at Pelican Parts  
burvs Comments: 1986 325e, turns over but does not start. Do the reference sensor and engine speed sensor come in to play here? They are the ones located on the bellhousing that have the two connectors by the starter. they both read around 980ohms resistance. I take it the crank position sensor is located on the passenger side of the block near the oil filter? If this sensor is screwed will it not deliver spark to the coil? Without an ossiliscope can I test the crank position sensor at home?
August 6, 2011
  Followup from the Pelican Staff: Resistance won't tell you much about sensor and sensor signal condition. You can check sensor A/C voltage when cranking, I would estimate it will be at about 0.5 volt ac. Now keep in mind, this also won't show you signal quality, but it will tell you if the sensor is creating voltage. - Nick at Pelican Parts  
Elwood Comments: Hi, 94 325i won't start. There is no power to the fuel pump. Pump works when I hook it up to battery. I have checked from the pump connector all the way back to the DME thru the fuse, relays and wiring harness and see no indication of faulty relays, or wiring. DME giving no fault codes 1444. Pulled DME and no signs of corrosion, loose contacts. If the either the CAM/Crank sensors are bad should I get a fault code? OR if they are indeed good getting no codes but not reading properly ie metal plate inside broke/corroded would I still get a fault code? Thanks.
July 22, 2011
  Followup from the Pelican Staff: Does the engine run when you manually activate the fuel pump? This will tell you if the DME is functioning. If it is not, check DME main relay operation. - Nick at Pelican Parts  
Deakon Comments: Ive got a 95 328i and it won't start, it'll crank all day, but not start, sometimes when you try to start it it will fire a few times, but then die. Checked the fuel lines and pump and those are all fine. I had the head gasket replaced recently because of a oil leak and the mechanic said that the inside of the engine was extremely dirty. Would that cause the crankshaft position sensor to become blocked and cause it to not start? and in that case Im assuming I could just pull the sensor out and clean it off?
July 19, 2011
  Followup from the Pelican Staff: The sensor being blocked would be quite odd. They do get covered in debris at times, but rarely is it a problem. I would spark, injector and fuel pressure. Once you know what is missing, you will be able to easier diagnose the issue. - Nick at Pelican Parts  
yellow Comments: Can a BMW361 with crankshaft sensor on the block able to be changed to use the crankshaft sensor fitted on the front pully?.
July 14, 2011
  Followup from the Pelican Staff: No, not that I am aware of. - Nick at Pelican Parts  
bvlady Comments: hellow i just finished my engine on a E36 325 from 1992.the engine worked perfect but after 1 week of driving with the car it wont star at all i cheked the gas pump relay and it work an now i took the crankshaft position sensor out and order a new one but im afraid my car stil wont start.i understand that this sensor has some thing to do with the spark plugs.please help me what could be the problem if it doesnt start.i will write here if it starts thanks
June 15, 2011
  Followup from the Pelican Staff: A faulty crank sensor could cause a no spark condition. I would check spark, fuel injector pulse and fuel pressure. Once you know what is missing, you will be able to easier diagnose the issue. - Nick at Pelican Parts  
Jamila Comments: Hi, I have an 87 BMW 325is and it starts and shuts right back off in about 7-9 seconds. I've just put a new fuel pump, rotator button, and coil. Still my car is doing the same thing. I was told it's most likely my crankshaft sensor. Is this true or could it be something else. Please help me.
May 2, 2011
  Followup from the Pelican Staff: A faulty crank sensor could cause a no start or stalling condition. I would check spark, fuel injector pulse and fuel pressure. Once you know what is missing, you will be able to easier diagnose the issue. - Nick at Pelican Parts  
nsarge Comments: my e46 wouldnt start so i took battery out of rear of car,i took it into my house to charge it up over night, reconnected it but still wouldnt start, i now think it could be the crankshaft sensor after some internet reseach, but my mechanic cant get any fault codes to show up, is this because ive removed the battery from the car?
April 4, 2011
  Followup from the Pelican Staff: Removing the battery may erase the fault codes. It all depends on how long the DME takes to totally discharge. A faulty crank sensor could cause a no start condition. I would check spark, fuel injector pulse and fuel pressure. Once you know what is missing, you will be able to easier diagnose the issue. - Nick at Pelican Parts  
philster Comments: Ok, Here is the info for a 1985 BMW 325e 2.7L on the reference sensors. There are 2 sensors mounted on the drivers side bell housing. One is the Speed sensor and the other is the CPS or Crankshaft position sensor. There is one on the front of the engine and that is the TDC sensor. To replace the Crankshaft position sensor follow the cables up from the Bell housing and they will connect to a bracket on the engine. One connector will be grey and the other will be white or black. The grey connector will be your crankshaft position sensor. I believe it is bolted in with a number 5 Allen head bolt. Very easy swap, took me 10 mins.
March 18, 2011
  Followup from the Pelican Staff: Awesome, thanks for additional information. We appreciate the help. - Nick at Pelican Parts  
makis Comments: hi there i am an owner of e46 318ci 2003 model i have the following problem.the car idles slightly rough when in neutral gear & once the engine reaches operating temp.while ideling the revs go up & down on there own. is this a crankshaft sensor problem ?
thanx
March 16, 2011
  Followup from the Pelican Staff: Hunting at idle is a common problem associated with an improper mixture. I would read the codes from the car and see if there is a sensor problem, or perhaps a vacuum leak. See this article here: http://www.pelicanparts.com/bmw/techarticles/Mult-Code_Reading/Mult-Code_Reading.htm - Wayne at Pelican Parts  
iheartmysubie Comments: hi, i have a 96 328i that I'm currently working on, and i used the fault code reader and it gave me the number for the Crankshaft Position Sensor so i go to replace it and first thing i do is pull the radiator hose on the left so i can see the sensor and its not there. i have the sensor in now but i don't know were it plugs in because i couldn't fallow the route of the old one. could i get a picture of were it plugs in please.
January 26, 2011
  Followup from the Pelican Staff: Unfortunately, the plug is located way the heck down under the intake manifold. I have pics in my head gasket article here: http://www.pelicanparts.com/bmw/techarticles/101-Projects-17-Head-Gasket/101-Projects-17-Head-Gasket.htm of all the parts under the manifold. You can squeeze your hand in there, but it's pretty difficult to reach the actual connector. At least that is how it is on the early 325s, I think it's the same on the later models. - Wayne at Pelican Parts  
chas in Scotland Comments: I have just replaced the camshaft sensor on my E36 M44 ti. Whatever is possible on the 6cyl models there is no way on this earth that you can get at the plug without lifting the upper manifold. However that is not too difficult - you don't need to remove it- just lift it enough to get access. Remove the air intake trunk first. Disconnect the wee vacuum pipe at the front - it will be brittle so perhaps best to have a spare bit before you start. The 2 nuts and the log bolt holding the upper manifold to the lower are easy to undo - 11mm. That just leaves the supports front and back. There are 11mm head bolts supported on slotted black metal barackets front and back - just to support the weight of the manifold. Just loosen them enough to be able to lift the manifold up. The front one is easy but the rear one is ridiculously inaccessible. I have small hands and struggled with a 1/4inch socket driver- one ratchet click at a time. Patience is a virtue. With that you loose are free to waggle the manifold and lift it up enough to get at the plug - indicated by arrows in the photo. The sensor itself is east to remove from the front of the block with a 5mm allen key and there is a further bolt to the side of this supporting the cable guide which you need to remove to reinsert the new cable. Replacement is the reverse of removal as they say but make sure the manifold is seated and bolted down on the intake scews before tightening the support screws. Incidentlly no new O ring is supplied when you order a new sensor from BMW. Replacing the gasket between upper and lower manifold might be a good idea too.
January 26, 2011
  Followup from the Pelican Staff: The four cylinder engines are tough. Thanks for additional information. We appreciate the help. - Nick at Pelican Parts  
Rick Comments: A friend of mine has a 95 318i. When the temperature drops the car will start and idle fine but when he revs the engine it will hit a 1000rpm and seem like the rev limiter kicks in. As the engine warms the rpm's increases along with the engine temperature. If he heats the crankshaft position sensor with a heat gun with the rest of the engine cold it will rev fine. He replaced the sensor but it didn't change anything. Any ideas?
January 20, 2011
  Followup from the Pelican Staff: This is an odd problem. The only thing I can think of is that the wire harness is a bit old and there is resistance in the harness that changes as the engine heats up. I would check the resistance between the DME and the sensor. Also make sure that the crankshaft sensor is firmly mounted, and also the sensor pickup points that the sensor reads are clean and clear of debris. - Wayne at Pelican Parts  
Banjomike Comments: I just replaced the timing belt on my 1987 325i. Along with this, I replaced plug wire harness, coil, dist. cap and rotor. It ran good for a week and then it began to miss slightly and randomly. Sometimes it would miss for a full minute and barely run. I have been over all my connections and cleaned the crank position sensor. I still have a "check" code and it continues to miss randomly. It continues to run very well but continues to miss randomly. I think it may be the crank sensor. Any help here would be very much appreciated.
January 17, 2011
  Followup from the Pelican Staff: 95% of the time, issues like these are caused by vacuum leaks. I would double-check to make sure all your boots and hoses are properly tight and have no cracks in them. I would guess this was the problem ahead of looking at the crank sensor. Typically when the crank sensor fails, the car won't run at all. - Wayne at Pelican Parts  
ricardo Comments: I just replaced the crankshaft sensor and the camshaft sensor in a 1994 540i because it would not start. the crankshaft sensor was the problem and it is now fixed. My 2006 3weeks later will not start cold and I am ready to change that sensor. is there some thing in the chemicals their spreading on the roads this winter in Massachusetts that causing this.
January 11, 2011
  Followup from the Pelican Staff: You might want to check inside the camshaft sensor area - the sensor picks up its signal from a rotating piece of metal on the cam. Same thing with the crankshaft sensor, but it's located outside of the car. Clean off the sensor and the wheel carefully and see if that helps. - Wayne at Pelican Parts  
Bob Comments: I have a 2000 X5 and could not locate the crankshaft position sensor. This vehicle has the 4.4 V-8. I looked diligently on the front of the engine. Finally located it. It is underneath at the rear of the engine. I just got done replacing it and had to remove the skid plate for access. I hope this helps.
January 3, 2011
  Followup from the Pelican Staff: Thanks for the info on your crank sensor. - Nick at Pelican Parts  
d_mas Comments: Hello! I need to change my crankshaft sensor. I realized that using the fail code reader from this site. I already ordered the new sensor and the replacement wire but i can´t find the location of the sensor and i asked about the instalation of the sensor in four shop garages and they told me that i have the wrong sensor. But i´m sure my car is a euro 328i 96. And i bought for a 328i 96 with M52 engine. CAn you help me? Thanks
October 21, 2010
  Followup from the Pelican Staff: It should be in a similar spot where it's shown in the article above - see the bonus pics for more detail. It's typically right next to the VANOS unit on the front of the engine. - Wayne at Pelican Parts  
M50 Comments: I'm having the same slipping problem that Vader reported on his August 15th, 2009 post here. I'm worried about stripping the bolt. I have no problem accessing the bolt but it just keep slipping. How do I deal with this?
October 16, 2010
  Followup from the Pelican Staff: Use a pick and clean the Allen hex hole thoroughly before trying to loosen it. Sometimes debris will prevent the tool from making good contact, then the head strips. - Nick at Pelican Parts  
Beemer Comments: "The car will output an error code showing a fault with the sensor."

The battery was disconnected so there are no error codes. Now what?

Thnx for you help.
October 8, 2010
  Followup from the Pelican Staff: You can wait until the fault code sets again, or test the sensor to see if it is working properly. Assuming you are referring to a problem with your crankshaft position sensor. - Nick at Pelican Parts  
beemer Comments: how do I know if my cas is bad?
October 7, 2010
  Followup from the Pelican Staff: The car will output an error code showing a fault with the sensor. See the tech article on reading BMW fault codes. - Wayne at Pelican Parts  
CornerCarver Comments: My son has an E21 323i at college in Missouri. He said it has started to shut off intermittently but onced allowed to cool for a while usually fires right back up.

Likely CPS? If so is it located in the same place as the E30 shown in your article?
September 29, 2010
  Followup from the Pelican Staff: Sounds like it could be the crankshaft sensor. It could be located at the front of engine near crankshaft pulley or in the crankcase, near the starter motor. - Nick at Pelican Parts  
Todd Comments: plugs 5-8
September 27, 2010
  Followup from the Pelican Staff: Thanks for image and follow up. - Nick at Pelican Parts  
Todd Comments: now the plugs 1-4
September 27, 2010
  Followup from the Pelican Staff: Thanks for image and follow up. - Nick at Pelican Parts  
Todd Comments: Ok I'm at work and have a little time to show you what I'm talikng about look at the crankcase sensor
September 27, 2010
  Followup from the Pelican Staff: Thanks for image and follow up. - Nick at Pelican Parts  
Todd Comments: Oh and when I pulled the crank sensor it was full of beige gunk and I was told that heat ,is hot radiator coolant can cause it to fail. A couple of times my radiator and components ruptured sending hot coolant in my engine bay in hot Arizona
September 26, 2010
  Followup from the Pelican Staff: The sensor itself is probably still good, but there may be some stuff in there that is preventing it from reading the metal plate that spins on the camshaft. - Wayne at Pelican Parts  
Todd Comments: Thanks about trying to start and the code returns but it didn't and I ran the battery down again with no code. I have an X5 4.4 '01 and I know it's a sensor because it threw a code, right? How much for 2 cam sensors and crank sensor? It's gotta be one of them. By the way how do you test these Sensors out of the car?
September 26, 2010
  Followup from the Pelican Staff: If the sensors are bad, typically the car won't run. If they are giving bad signals, then you will see a code. If the engine backfires or misses, then you might see a camshaft sensor code when it's really a false code. If you have re-installed the sensors and the engine is not tripping codes, then I doubt that they are the problem.  
Todd Comments: My X5 4.4 cranks but wont start. I had to replace the alt, battery, and water pump. Now crank, no start. I had a code but I accidently erased it. I had dirty plugs which I'm gonna replace but I believe that my issue is the crankcase sensor. It might start but runs real rough then cuts out
September 22, 2010
  Followup from the Pelican Staff: After a few more non-starts, the code should return. If the engine is having trouble starting, it will almost always retrigger a code. - Wayne at Pelican Parts  
old_rob Comments: Crank Shaft Sensor replacement write up seems good. I have a BMW 320d 2003 and I need to check the Crank Shaft Sensor. I assume your write-up is for the E46 petrol version, could you tell me where the sensor is for the deisel version?
August 26, 2010
  Followup from the Pelican Staff: Sorry, we don't have those cars over here in the US, so I'm not sure. I imagine it would be in a similar position. - Wayne at Pelican Parts  
suffy Comments: Hi
i have a 1998 e36 bmw m3 evo. it broke down on me this morning. I plugged it into a snap on scanner and it came up with a fault code 138 it also said time out message 1? i have put this code into my autodata program but it is not recognised. At first i did think that my crank sensor has failed but know i dont know what this code means? can anyone please help me out?
August 23, 2010
  Followup from the Pelican Staff: 138 refers to a fault in the CAN bus, usually a module not responding in time. You may have a faulty control module that cause the vehicle to die. I would check for fault codes using a BMW scan too, as the Snap On scan tool will not be able to access advanced features. - Nick at Pelican Parts  
Philster Comments: 1985 BMW 325e 2.7 liter, Follow up. I was told this model did noy have a camshaft position sensor. If so where is it located
August 20, 2010
  Followup from the Pelican Staff: On that car, no, it only has a crankshaft sensor actually. - Wayne at Pelican Parts  
philster Comments: 1985 325e 2.7 liter. Follow up. I thought the sensor on the front was the TDC sensor. I need the crank position sensor location
August 19, 2010
  Followup from the Pelican Staff: Hi again. TDC sensor = crank position sensor. Perhaps you mean the camshaft sensor? - Wayne at Pelican Parts  
Philster Comments: 1985 bmw 325e 2.7 liter, where is the position sensor located
August 16, 2010
  Followup from the Pelican Staff: It should be on the front of the engine, towards the left side of the car, near the toothed wheel on the crankshaft. - Wayne at Pelican Parts  
boraboy Comments: ANyone know the voltage and resistance of a normal operating CPS? Im trying to determine which one is faulty and perhaps design a better quality sensor more or less understand it a bit better. 50hz with 25ms so far.
August 15, 2010
  Followup from the Pelican Staff: It doesn't work that way with voltage and resistance like a linear sensor (like a temp sensor). It sends out a pattern that the computer reads, you can see this pattern if you hook it up to an osciliscope and turn the engine over. - Wayne at Pelican Parts  
Iman Comments: I have a 1994 325i convertible. I am in the middle of doing the head gasket replacement and have decided to replace the crank position sensor among other things while I am at it. I got the allen bolt off connecting the unit to the bracket, but that sucker will not budge! Is there some special trick to get this of? I PB Blasted the heck out of it and it's not moving at all. Any ideas would be greatly appreciated.

Thanks.
August 10, 2010
  Followup from the Pelican Staff: Yes, these things can be difficult to remove at times, a lot of people break them removing them, and then have to drill them out. I'm not sure what would help, maybe trying when the engine was warm, and then dripping some cool fluid down onto the sensor itself (take one of those air-in-can things that you use to blow out dust in your computer, and then hold it upside down and drip the fluid on the sensor when the car is warm). That has worked for me a bit in the past when things were tough like this. - Wayne at Pelican Parts  
Auto-Mark Comments: E36 M3 CRANK POSITION SENSOR - having just done this on my 1997 M3 sedan, I can verify that the sensor is located on the left rear side of the cylinder block, as shown in the graphic above. It is held in place by a 5mm hex allen bolt. The original sensor has a pigtail with a connector that snakes up to a junction with another connector, under the center cylinder intake manifold runners. Remove the air cleaner assembly, the alternator air feed duct, and the finned "beauty" cover for the intake runners to enable some albeit limited access and visibility to this area. The updated replacement crank sensor does not have a pigtail, but rather requires a new harness assembly with 4 connections. One is to the new sensor, the other is to the connector the original sensor pigtail routed to, and the other two splice in using existing connectors to the VANOS solenoid valve connector, at the top front of the engine. Note: don't go to the local auto parts store for this stuff - I bought and returned two sensors that were spec'd by their system but were not correct for the application.
May 27, 2010
  Followup from the Pelican Staff: Thanks for the good followup! - Wayne at Pelican Parts  
Andrew Comments: there seems to be a lot of confusion on this subject... I have a '96 328i, where is the sensor located at? I have heard front of the engine, by the transmision... Thanks for your help.
February 18, 2010
  Followup from the Pelican Staff: It should be on the left side of the crankcase, near the starter motor. - Nick at Pelican Parts  
DNelson648 Comments: How do you test the crank sensor to see if it is faulty ? OHM meter? if so what ohm reading should I get . my fuel pump relay will not activate all relays are good and fuse as well?? DNelson648
February 6, 2010
  Followup from the Pelican Staff: Checking resistance only tells you the winding are intact. the sensor could still be faulty and not producing a signal. The best way tot test it is with an oscilloscope. - Nick at Pelican Parts  
Greg Comments: I have a 2000 540 that all of a sudden cranks but does not run. I went to replace the crank sensor but the one I bought does not plug in. I have been having no problems. Parked it in the drive way and then went to leave and it just cranks and cranks. Any other ideas. There are no codes in the car but if it does not sense a problem then it might not throw a code? The part number I pulled out was 12.14.1.433.264 and the one it calls for and I ordered was 13.62.7.839.138. What should the car have?
January 9, 2010
  Followup from the Pelican Staff: If your engine doesn't start, you'll want to start with the basics. Check spark, injector pulse and fuel pressure. Once you know what is missing it will be easier to diagnose.

To confirm the part #, call our parts specialists: 888-280-7799 - Nick at Pelican Parts
 
Wayne at Pelican Parts Comments: Here's a diagram of the 1997 M3 crank angle sensor according to the BMW factory documentation. It's number 18 on the diagram.
December 19, 2009
hefftone Comments: Looking for the Crankshaft position sensor on 97 M3...It is NOT mounted at the front off the engine, at approximately 10 o'clock from crank pulley, and timing marks. Where is it? Why did they move it?
December 16, 2009
  Followup from the Pelican Staff: Looks like they moved it into the least accessible spot in the world, near the knock sensor! I will post a picture in a comment to this article. - Wayne at Pelican Parts  
George Zurich Comments: VADER is correct re not having to remove the intake manifold in order to change out the Crankshaft Position/RPM Sensor...at least I didn't have to on my '95 M3. The only thing I would add concerns removing the actual sensor from its mounting housing in E36 models. For some reason, the sensor on my M3 was so tight in the housing possible corrosion that I thought I'd never get it out without destroying something. I used penetrating oil and all manner of tools but it would only budge maybe 1/2 the distance needed to come out. SO...in desperation I tried prying it upward from the bottom of the sensor the bottom surface of the sensor nearest the toothed degree wheel. DON'T DO THIS!!!!!!!!!! The sensor's soft aluminum casing will spread out and deform so now you'll NEVER get it out of the housing. I had to play metal craftsman with a little hammer for 20 minutes reshaping the deformation back to its original round shape before I could eventually remove the sensor. Use plenty of penetrating oil and then 3-in-1 oil, take your time, and be gentle as possible.
November 19, 2009
  Followup from the Pelican Staff: Thanks for the additional information. We appreciate the help. - Nick at Pelican Parts  
stella65 Comments: Hi,the xmas tree is not a picture of my engine.I had to call someone out to have a look at my beloved bmw 320i tourer because for the first time today it turned over but didnt start..it wanted to go i know it so theres something not quite right..normaly she purrs.Worried.Anyway the mechanic had a lookfortunately green flag..and before nearly running the battery down and ripping my starter motor before i stopped himunfortunately green flag..man leave my car alone!..god..his diagnosis was that i may need a crankshaft sensoror a new starter motor the way he carried on...if its a crankshaft sensor can i replace it myself,ive managed work like a spark plug replacement etc or is this beyond me?..or is it something else?..appreciate some guidance thanks
November 11, 2009
  Followup from the Pelican Staff: If you have done some repairs, the crankshaft sensor should be no problem. Go for it. - Nick at Pelican Parts  
bajan Comments: i have a 325i engine that just cut out i checked the pump no power but it working if u put external power to it but car was still not starting i then went for the crank senso and realisd it was not working and it does in fact turn on the spark and power to the fuel pump changed it and motor running as normal...hope this story is some use to someone
October 25, 2009
  Followup from the Pelican Staff: Thanks for the follow up. Great info. - Nick at Pelican Parts  
VXracing2k8 Comments: hi i have a 1987 bmw 325i sport which is starting, but putting very poor quality spark out. so i have decided to try new crank sensor justing wondering could you put up a few pics and some advice for me to work off because i really don't know were to start.

any help will be Appreciated
October 5, 2009
  Followup from the Pelican Staff: It's probably not a weak spark, but something else. Try looking for vacuum leaks first, these are the most likely culprits. - Wayne at Pelican Parts  
drews87325eM20 Comments: I tried drilling a whole and using an extractor but, no go. Is there enough room to bang the sensor into the bellhousing? Is there anything in the bellhousing that might be in the way and prevent the broken sensor nfrom being banged into the bellhousing? I was also told I might have to remove the transmission to tap out broken sensor. I am at a loss. I can't drive the car, and it's either I take it to the shop and spend an obsene amount of money just to get the sensor out or, junk it.
Thanks for your help.
October 4, 2009
  Followup from the Pelican Staff: The sensor has to removed, you cannot drive it into the crankcase. The broken bolt will have to be extracted and the hole repaired. - Nick at Pelican Parts  
drews87325eM20 Comments: Hi Wayne,

Thanks for the reply. Here are the pics of the sensor hole and you can kind of see that the other half of the sensor is stuck in there. I really don't know what to do or how to get it out. I PB Blasted it for almost two weeks, tried pulling it out, and even banging it in but, to no avail. Your advice will be greatly appreciated.

http://i946.photobucket.com/albums/ad302/drews1987325m20/101_0649.jpg

http://i946.photobucket.com/albums/ad302/drews1987325m20/101_0654.jpg
October 3, 2009
  Followup from the Pelican Staff: Maybe drill it out an use a thread extractor? I can't really see from this photo. - Wayne at Pelican Parts  
drews87325eM20 Comments: Hi again,

I still see the metal piece of the sensor in the hole but, it still won't budge. The speed sensor came out without a problem but, the reference Crankshaft sensor just will not budge. So I have been hammering it inward toward the bellhousing hoping it will fall in there so I can be able to put the new one in the hole but, it won't budge. I don't know what else to do. I can't drive it to the shop and I can't spend all sorts of money on towing, and labor... There is nothing else I can do so, I will be waiting for your response. Thanks in advance...
October 2, 2009
  Followup from the Pelican Staff: Send me some photos of the problem area, and I will take a closer look? - Wayne at Pelican Parts  
drews87325eM20 Comments: Hi.. I tried to remove the crankshaft sensor on my 1987 325e M20 located at the driver's side bellhousing but, it snapped! The other half is still in the sensor hole and it won't budge. I unfortunately scored the hole walls trying to bang it into the bellhousing because there is no way for me to pull it out of the hole. I don't know what to do.. Please help..
September 30, 2009
  Followup from the Pelican Staff: The sensor has to removed, you cannot drive it into the crankcase. The broken bolt will have to be extracted and the hole repaired. - Nick at Pelican Parts  
Russ Comments: Hi there... my son has a 1987 535i and we've determined that the speed sensor is bad because the vehicle won't start, gets no spark from the coil and the resistance between pin 1 and 2 is 'open' on the speed 'D', blacksensor rather than 930 ohms +-90 ohms. The reference sensor B reads correctly. It seemed like a piece of cake job but when we removed the mounting screw to slide the sensor out of the bell housing the sensor will spin around but will NOT come out! It's like there's a clip holding it inside or something. Is there a trick to sliding the sensor out? We're on the side of the road and it's been raining so we're really looking for that "silver-bullet". Everywhere we read in the manual it sounds like the sensor should just pull right out. We attempted the reference sensor as well but it won't pull out either. Thanks for you help in advance.....
September 1, 2009
  Followup from the Pelican Staff: Sorry, one month later I'm assuming you're not still on the side of the road. There is a clip that it slides into, it's pretty easy to see with proper lighting and better access. - Wayne at Pelican Parts  
bobby Comments: Thak you Wayne, for your answer,I just like to know if there was any chance, it may be the cranck sensor, I know I sure get the sacaner or code reader,long before,but money is tie,but i see, thank you very much, for your time,is good you guys,help any how.Bobby
August 26, 2009
  Followup from the Pelican Staff: It's impossible to tell if it's the crank sensor without pulling the code. But, a bad crank sensor will cause the car to not run. You can buy the code reader, or you can take the car to a shop and have them read the codes, but by the time you're done, it will be cheaper to do it yourself. - Wayne at Pelican Parts  
bobby Comments: I have a 96 318is 4 cyl,how cut I know if the cranck sensor is my problem,the car won't start,wn't even kik the started,I turn the ign.swich and no a thing,in american cars,you know is the started,but BMW? I did change the started,ign.swich,and the DME,comp,and still won't kik,the satrted won,t move,I don't have a code scaner,but I have a miltimiter,thank you for your help, my hope is on you.
August 25, 2009
  Followup from the Pelican Staff: You need to get the code scanner - we sell them in our tools section. Without it, you won't know what the problem is. - Wayne at Pelican Parts  
VADER Comments: As you can see here I got the Hex Bolt Out... It was tricky because it is slanted slightly and the Allen Wrench kept slipping!!! Now you have to try to get the actual sensor out of the housing which has a really tight hold!

Good Luck!
August 15, 2009
  Followup from the Pelican Staff: If you can't get a normal hex / Allen tool in there, they make ones with rounded ball ends that you can turn on an angle. Very useful for tight spaces. - Wayne at Pelican Parts  
VADER Comments: Front of Engine Crank Shaft Sensor Location!
August 15, 2009
  Followup from the Pelican Staff: Thanks for the photo. - Nick at Pelican Parts  
VADER Comments: Hello!

First I'd Like To Say, "Great Write-Up on the Crank Shaft Sensor!" However, I would like to add to the write-up because there is a lot of info missing... 1st you really DON'T NEED TO PULL THE MANIFOLD AT ALL!!! Just pull out the Air Filter Housing, Disconnect the Coolant Thermo from the Air Filter Housing along with the Cruise Control Unit. Take those all the way out of the vehicle and set aside. 2nd Remove the Air Duct connected to the Alternator and set that aside. 3rd Remove the VANOS SENSOR and unscrew the two bolts from the housing! 4th Remove the Big Bolt under the VANOS unit and move the unit to the opposite side of the Oil Filter Housing! 5th You can now see the Crank Shaft Sensor and the Cam Shaft Sensor Connections to the rear of the engine from here, which is right under the Manifold, you can clearly reach in and grab the connectors right off of the metal connector holder, just slide it out! 6th There is a small wire-tie that holds the three sensor wires together at the bottom of the VANOS Sensor, sfreszuse wire cutters to "CAREFULLY" cut the wire-tie! you can replace this when you are done with a new wire tie.
7th un-tangle the sensor wires and un-route the Crank Shaft Sensor wire from under the VANOS unit and out of the Plastic Holder, then un-plug the Crank Shaft Sensor from the housing "Which may be a little tight and tricky to do" and replace it with the new Sensor!!! Re-Install everything and be happy...Your Done!!!
August 15, 2009
  Followup from the Pelican Staff: Thanks for the additional information. We appreciate the help. - Nick at Pelican Parts  

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