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Pelican Technical Article:

BMW Fuel Pump Replacement

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

     This article is one in a series that have been released in conjunction with Wayne's new book, 101 Performance Projects for Your BMW 3 Series. The book contains 272 pages of full color projects detailing everything from performance mods to timing the camshafts. With more than 650+ full-color glossy photos accompanying extensive step-by-step procedures, this book is required reading in any 3 Series owner's collection. The book was released in August 2006, and is available for ordering now. See The Official Book Website for more details.
 
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     I was planning on writing a technical article on the fuel pump replacement, but was unfortunately "forced" into it when the pump in my E36 3-Series died on us in Las Vegas last year.  We spent all night trying to figure out why the car wasn't starting, checking ignition, electrical components, etc.  Then we decided to check the fuel pump.  We pulled out the rear seat, and pulled off the fuel pump cover.  Surprise - the pump was not making any noise or vibration when we tried starting the car.  Disconnecting the electrical harness and checking the voltage supplied to the pump revealed a healthy 12 volts - the problem was definitely with the pump.

     Luckily for us, one of Pelican Parts' suppliers had a warehouse a mere two miles away, and we were able to obtain a new pump the next morning.  We then set out to perform the arduous procedure of a fuel pump replacement in the parking lot of our hotel!  Needless to say these weren't ideal circumstances for performing this repair, but I thought I would document what we did, as you may find yourself in a similar predicament if your fuel pump fails on you.

     A little background is in order here.  This particular car had been sitting for an entire year, as I slowly performed a head gasket replacement on it.  I had put about 500 or so miles on it since the head gasket replacement, but the gas that was sitting in the tank probably still had some old gas mixed in there.  While we were tooling around in Vegas, I let the gas level get really, really low in the tank.  Then I filled up and let the car sit for about an hour.  When we came back to the car to get some dinner, the car would not start and (as we found out later on) the fuel pump wasn't working.  My conclusion here (and also after looking at the pump as it came out of the car) was that running the car very low on gas was a bad thing, as it allows a lot of dirt and debris to be sucked up into the pump mechanism.  So the moral of this story is to make sure that you don't run your car very low on gas.

     Now, let's talk about fuel tank senders.  On the E36 BMW there are two of them (I still haven't completely figured out why), one on the left side and one on the right side, which is integrated into the fuel pump.  The procedure for the replacement of the fuel sender on the left side is identical to the procedure for replacement of the fuel pump on the right side.

     Okay, onto the replacement procedure.  The first thing to do is to prep the car.  Remove as much gasoline out of the car as possible.  The way I like to accomplish this is to get some long fuel hose, a small battery operated carburetor fuel pump, and pump from one car to another.  An alternative approach would be a gasoline hand pump available at most local auto parts stores.  The bottom line is to get as much gasoline out of the tank as possible.  Unfortunately in the parking lot of the hotel, we were not able to get as much gasoline out as we hoped - under ideal circumstances, the tank would almost be completely empty.

     Another important thing to remember - always disconnect the battery when working near the tank - you don't want any accidental sparks from any electrical connections.  Some additional warnings too:

  • Always have a fire extinguisher handy in case an emergency arises.
  • Gasoline is highly flammable.  When working around fuel and fuel line connections, don't disconnect any wires or electrical connections that may cause electrical sparks.
  • Always remove the gas cap to relieve any pressure in the tank prior to working on the fuel system.
  • Do not use a work lamp when working near fuel or fuel tanks.
  • Gasoline vapors are strong, harmful, and can cause you to become drowsy and not think straight.  Always perform work in a well-ventilated area with plenty of fresh air blowing through.
  • Always disconnect the batter when working on the fuel system.  Leave it disconnected for at least 30 minutes to allow any residual electrical charge in components to dissipate.
  • Keep plenty of paper towels on hand, and wear rubber gloves to prevent spilling gasoline on your hands
  • Be well grounded - don't do anything that will create static electricity.  Keep all cell phones and pagers a safe distance away.

     The first step is to remove the back seat from your car.  It's simply clipped in place.  Move both the driver and passenger seat all the way forward, crawl in the back of the car, and simply tug up on the rear seat from the bottom edge.  It should pop up with a minimal amount of force.  BMW seems to have smartly designed the car so that the fuel tank senders and the fuel pump were very easy to get to - on some cars you need to drop the fuel tank to do the replacement.

     With the back seat removed, you will see some sound deadening material (Figure 1) with two flaps, one on the right side and one on the left.  The fuel pump is located on the right side of the car - lift up the right side flap.  You will see a circular cover with some wires exiting out of it (Figure 2).  Remove this cover, and the thin foam seal underneath it (Figure 3).  Underneath, you will see the top of the fuel pump.  Disconnect the two connectors that mate with the pump (Figure 4).  Now, disconnect the fuel lines that feed into the top of the pump.  There will be some gas spillage here - have a roll of absorbent paper towels on hand.  Plug the lines quickly with a bolt or a pen and use a hose clamp to prevent further leaks.

     The pump is held in place by the big circular disc with the risers on it.  There is a special BMW tool that is used to remove and tighten this black plastic ring. However, with a large flathead screwdriver and a small hammer, you can easily tap the plastic ring loose.  Carefully remove the ring from the top of the pump.

     Now comes the fun part.  Make sure that you are prepared at this stage, with a heavily ventilated garage, plenty of paper towels, and rubber gloves (we didn't have any gloves with us in Vegas).  Pull up on the pump, and the entire assembly should come right out of the tank (Figure 5).  There is a big, thick o-ring that seals the pump to the tank - it will probably fall to the bottom of the pump, as shown in Figure 6.  Don't let it fall into the tank - you'll then have to fish it out somehow later on.  Figure 7 shows this big o-ring from a different angle, having fallen down to the bottom of the fuel pump screen.  Notice in this photo how brown the bottom filter of the pump looks.  For reference, the new pump's screen was completely white.

     Now, you have an open tank of gas in your backseat (Figure 8).  Needless to say, you don't want to leave the car like this for any length of time.  However, you also don't want to work too quickly, as you don't want to make any big mistakes.

     You could probably reuse your old sealing o-ring, but I opted for a new one (Figure 9).  If you do use the old one, and it doesn't seal well, you will be plagued with a fuel smell in the interior of your car from that point on.  Figure 10 shows the brand new pump (placed in my laptop bag, as I didn't have anything else to use as a backdrop in the hotel parking lot).  Notice how white and clean the pump looks compared to the old one.

     Insertion of the pump into the tank is the reverse of removal (Figure 11).  Make sure that the big o-ring is properly sealed around the outside of the pump and will seal with the opening of the tank (Figure 12).  The new pump sits snuggly on the top of the tank, as is shown in Figure 13.  Spin on the large circular ring and use the hammer/screwdriver tap procedure to tighten it.  I tightened mine about as tight as I could get it without feeling that I would break the ring.  Reconnect the fuel hoses as is shown in Figure 14.  Use new hose clamps.

     Plug in the new fuel pump, and reconnect the battery after all fumes have subsided.  Then crank the car over and see if it starts.  If the car starts and runs for any length of time then the pump is working fine.  Replace the top cover and foam seal.  Then reinstall the back seat simply by pushing it down into its home position.

     Well, there you have it.  Really not that difficult - just a bit unnerving if you don't have all the info - but we provide that here.  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.

   
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Comments and Suggestions:
ThemberComments: Hie, I have a problem with my e46 318i 2000model. it cranks but cant start starts after second cycle. wen it starts it has no power. jerks until after a while smoothens up but remains with little power.
April 23, 2014
Gee GeeComments: If my fuel pump has low pressure would I need to replace it with a new one?
April 22, 2014
 Followup from the Pelican Staff: Yes. Be sure it has the correct supply voltage and the fuel filter is not plugged. - Nick at Pelican Parts  
Gee GeeComments: Hi I replaced my fuel pump on 02 mini Cooper s using aftermarket it was not the whole assembly I had to take old assembly apart..tricky part was removing the hose off the old pump I got it off bit worn an used hose clamp seems ok now car won't crank at first start will start on next turn this happens when car is sitting for more then 8 hrs?
April 22, 2014
 Followup from the Pelican Staff: Sounds like your system is not holding pressure. You may have an issue with the installation of the new pump. I would double check your work. - Nick at Pelican Parts  
finan Comments: Hey, so I have a leak coming from my fuel pump. I took the cover off for the fuel pump and there was gasoline all in the compartment. There is also fuel leaking on to the ground. I dont know if I should replace the fuel pump or if something has a hole in it. Also, the car runs fine. Sometimes hesitates to take off and start but never stalls or fails to start.
April 17, 2014
 Followup from the Pelican Staff: Not sure what vehicle you have. Most BMW fuel pumps are a module, if the top is leaking, it is part of the fuel pump assembly. - Nick at Pelican Parts  
lop54Comments: Hello from california, my son owns a 97'328i the problem that we have is the car wont stsrt until the third or forth crank, we have repalced the VANOS several hoses end fuel pump filter and regulator still not to start at first crank anybody with an idea, by the way all this work is been done by certified BMW Techs.
March 20, 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
 
AndyComments: I have an issue with my 1993 318I, where the rubber hoses that connect the RH sender unit to the LH pump have dry rotted, do I have to drop the tank in order to replace these, or is it possible to just feed them through.
Thanks, Andy
March 17, 2014
 Followup from the Pelican Staff: I would think you are going to have to lower the fuel tank. It's worth a try fishing them through. Let us know how it works out. - Nick at Pelican Parts  
little ingyComments: i have taken to pièces my diesel pump on my bmw 318tds and it doesnt want to come out so which tool do i need to do that and how do i time it
March 4, 2014
 Followup from the Pelican Staff: We dont have your vehicle here in the US, so I have never done that repair. I opened a post in our forums. A Pelican community member may be able to answer your question.
- Nick at Pelican Parts
 
Ali Comments: My e46 1999 328i isnt working after i repaired my fron rack, since it was leaking, it crank, but donst start, seems like it dosnt get fuel, so i tested the connection to the fuel pump, and i found that it gets voltage, my battery is low so i had a reading about 10 Volts, and i could read it even with the key out, that is strange, i didnt need to turn the key to position 2, pump is always on, is that all right? i suspect my pump to be broken, because its not vibrating and getting voltage, also the car was very low on fuel, that might have clocked the pump.

any help would be apreciated. thanks
December 29, 2013
 Followup from the Pelican Staff: If the pump is received power and ground, yet not turning on, it is likely faulty. i would start there. - Nick at Pelican Parts  
abe12Comments: Hi, I have a 1993 325is BMW. About a week ago, the car would hesitate to start and would reek of gas. I found out that the gas was leaking from a tube that is connected to the fuel line that runs up the car and under the back seats and is next to the fuel pump. It turns out that the only solution is to lower the gas tank and get to the tube to replace it. Have any suggestions?
December 16, 2013
 Followup from the Pelican Staff: Depending on which line it is,, you may have to remove the tank. If so, I would replace all of them, that way you don't have to go back in there. - Nick at Pelican Parts  
los3232Comments: hello i have a 2001 325xi that I have been trying to fix it starts and runs good for about five min then it suddenly starts to putter when you give it gas it seems like there is a lack of gas flowing through i have checked the fuel pump and it seems to be working properly the codes say its a misfire but all injectors are working properly any help please
December 14, 2013
 Followup from the Pelican Staff: I would perform a fuel delivery system test. Check fuel pressure, volume and quality.
If all is well, check exhaust backpressure. - Nick at Pelican Parts
 
ELISHAComments: I have a BMW318i E36,i have changed both the sender & pump,my car is not sucking fuel from the right chamber to the chamber with the pump,Does the Pressure in the Tank contribute to sender to siphon or i need to fill fully the tank because fuel gauge is also reading wrong readings.I topped the main chamber but all fuel is send to the sender unit by the pump,the problem,fuel can not be transported back to the pump again.????
November 19, 2013
 Followup from the Pelican Staff: Check that the vent line from the tank is not plugged. Also check that the fuel filter is not plugged. If it is not, and the fuel pump is creating the correct mount of pressure, you will need to replace the siphon. You can get it separately. Give our parts specialists a call at 1-888-280-7799. They can help you find the right part.
- Nick at Pelican Parts
 
lawessd63Comments: Hello, I replaced the pump without a problem but the pump isn't turning on... I also checked the fuses and they are all OK, any idea?
November 6, 2013
 Followup from the Pelican Staff: I would check if the pump is getting power and ground. If not, test the relay. - Nick at Pelican Parts  
NoodleComments: I have a 2003 325i E-46 with 85,000 miles. I recently blew the engine a long story and had it replaced. My question is when the codes are reset on the new engine, does the gas tank need to be completely empty or full in order for the sensors to work properly? I just blew a fuel pump and mechanic said it was because I had overheated fuel pump due to no gas in car. The indicator light had just come on, I checked to see how many miles left before empty, it said, as usual, 40 miles, so I was headed to gas station 2 miles away when car ran completely out of gas. Obviously, I did not have 40 miles left before running empty. So, can I question my mechanic about resetting the codes properly so that when indicator light comes on I am not completely out of gas?
November 6, 2013
 Followup from the Pelican Staff: With a new engine in the car the MPG has changed and the cluster will take some time to adjust. Clearing codes and fuel level have nothing to do with each other. A fuel pump failing after 85000 mi is not uncommon. I would check to make sure there are no vacuum leaks on the new motor causing poor fuel mileage.
- Nick at Pelican Parts
 
MikeComments: ok im just about out of ideas with my 95 325i the car died while i was driving on the highway had batt power no fuel or spark is what it seemed like ...I took the fuel pump out and the wires were burnt out sooo i replaced the pump no when i try starting it cranks but i have no power to the pump and also no spark i changed the relays fuel,DME still not starting and no spark i even replaced my cam sensor still nothing any ideas where i should go from here?
October 30, 2013
 Followup from the Pelican Staff: I would check to see why the fuel pump relay is not turning on, the relay should get turned on by the DME.
- Nick at Pelican Parts
 
ELISHAComments: Does a sender unit act as a second pump on BMW 318i 1993 MODEL?It seems its not sending fuel to the main tank where there is a high pressure pump from the sub tank.Does the Hich pressure pump controls the sender Unit????
October 30, 2013
 Followup from the Pelican Staff: there is a suction jet pump that pumps gas from the left side of the tank to the right. It uses the return fuel pressure to create suction to move the gas to the other side, there is no electric pump on the left side of the tank.
- Nick at Pelican Parts
 
ELISHAComments: Hello my car is sending all fuel to reserve tank leaving the main tank empty,its failing to withdraw fuel from Reserve tank to Main tank.
October 28, 2013
 Followup from the Pelican Staff: Assuming we are talking about a BMW saddle style tank, there is no reserve, It is a fuel tank with two chambers, one on each side of the vehicle. The fuel pump sends fuel to one side, then a siphon valve sends it back to the fuel pump to keep each side of the tank level. You may have a faulty or disconnected hose inside your fuel tank.- Nick at Pelican Parts  
carnutdallasComments: I have replaced the fuel pump and relay 2 times. I have replaced the filter, nothing seems to help. Drive the car 1 minute, 20 minutes, and hour and randomly it will blow the fuse and shut off the pump. I have checked wiring. I have checked resistance. I have rigged up a fuel pressure gauge to drive and watch it for spikes, resistance, hell anything and nothing. No rhyme or reason. Just tool along and "Blammo" - fuse blows. Pull over get out, replace fuse and keep driving until it blows. I have put in larger fuses - yes, that is a no, no but I do not care if it catches fire! It buys me more time. It has to be shorting to ground? I have traced all the wires from pump. I replaced the wire to the pump. I have traced all wires from DME to relays and to pump. Nothing. Not a damn thing.

Any ideas, anything would be greatly appreciated. I do not have the wiring diagram for this car. I have searched online and found cars that are close, but I do not have the actual early production diagram, which I think is different. The fuse does not go straight to the relay. It goes through the DME just from separating and tracing. One wire on fuse goes into car and then under dash and then disappears near column and console, but we lose it. I need to know how it is set up for this car. I think that is my problem, but no idea where the wire goes. Please help. Desperate in Dallas!
October 4, 2013
 Followup from the Pelican Staff: I would suggest grabbing a repair manual, it will have the specific wiring for your vehicle. The obvious answer is there is a short in the harness. It will be difficult to locate without the correct wiring. - Nick at Pelican Parts  
ilybebe89Comments: So we own a 86 bmw 325es. Just replaced both fuel pums and the filter due to pumps going out. We can not get it to start. It turns but won't fire up. Took fuel line off engine and tryed to see if could get gas to come out and nothing. It is 3/4 tank full not bad gas. No idea where to start to fix the problem and need it up and running asap. Please help.
October 2, 2013
 Followup from the Pelican Staff: Well can you grab the pump while someone is cranking the engine and see if the pump is vibrating. Maybe you have the electrical connectors swapped? How about the fuel lines. Is the flow out of the tank to the pump and then the engine or did you accidentally switch them around? - Kerry at Pelican Parts  
TheoComments: Hello....love the articles....my problem is that my car cuts off just above 1/4 tank fuel as indicated by fuel gauge. When I fill about 5 litres of fuel, it starts. According to cluster unit test, the gauge works well from empty to full. Is there a problem with my sending unit on left hand side. by the way the car is a right hand drive. My car is a 2000 model 328i E46......many thanks
September 28, 2013
 Followup from the Pelican Staff: It does sound like your vehicle is displaying the incorrect fuel level. It can be a sending unit issue or a faulty siphon. - Nick at Pelican Parts  
rich Comments: I have a 97 bmw z3 bought from a friend and he had the fuel pump replaced before replacement of the pump all gauges worked now rpms,speed and fuel do not work, my guess is something didnt get plugged back in,any suggestions on what to check?
September 15, 2013
 Followup from the Pelican Staff: If none of the gauges are workin, I would remove the cluster and check to make sure it has power, ground and a communication signal.I would grab a repair manual. It will have the wire diagrams you need.
- Nick at Pelican Parts
 
///powerComments: I have an E60 M5 and recently replaced both fuel Pump and filter. Now I am experiencing fuel cut once fuel is below 1/2 tank! I have a check engine light with the display saying "increased emissions". No codes is apparent! what could be the problem? Thanks.
September 10, 2013
 Followup from the Pelican Staff: You could have a hose inside the tank that is leaking, an O-ring or the hose itself may have been damaged during the repair. Causing low fuel volume, creating an engine misfire. - Nick at Pelican Parts  
ShannonComments: I have a '96 318ti German spec automatic. I’m stationed in Germany so I'm trying to get an answer and possible solutions before I try to explain to a mechanic who doesn't speak great English :-/ Every now and then for the last 6 months, I’ll be driving and the car almost stalls on me. Sometimes it will stall and I can barely make it to the side of the road to pull over safely. Mostly when I am going slower speeds it happens. Last night after about a 20 minute drive, the car suddenly stalled out completely, exactly as I was pulling it into my garage. This was the first time the problem has occurred in about 1.5-2 months. It sat in our garage for 2 weeks while we were away last month and it hasn’t been driven a lot since. Today after driving for about 20 mins, the car was then parked for about 2 hours. It started, ran rough, then stalled after 3-4 seconds while in park. Tried holding it at 2.5-3k rmp and that didn’t help. It ran rough and stalled after 5-10 seconds every time. At one point it held for a good 15 seconds with no issues, then all of a sudden died. Then it just wouldn’t start at all. Car is in perfect condition otherwise. Don’t have a whole lot of money or time to try to fix every part, any ideas on best place to start? I’m at about ¼ tank of gas right now and had to leave it parked on base and take a bus home, so it’s not in the greatest spot to work on it. Ideas are much appreciated!! Thanks!
August 11, 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.

Then I would perform a fuel delivery system test. Check fuel pressure, volume and quality.

Performing a few tests will help direct you to the problem and prevent replacing good parts. - Nick at Pelican Parts
 
Kopa'2Comments: got a BMW318i. it can't start or cuts when fuel gauge reads 1/4 tank but when refueld to 1/2 tank rans normaly. could the sending unit be the problem?
August 5, 2013
 Followup from the Pelican Staff: You could have a faulty sending unit or a siphon issue. Check the actual fuel level when the tank reads 1/4. You can also test the sending units to see if they are reading correctly. - Nick at Pelican Parts  
terryComments: Ihave a 1995 318 i convertable , replaced the engine can not get it to start no power to fuel pump pump works via a hot lead got fire a plugs and fuel but still no start. Should i look at central locking modual ? Have checked fuses breakers.some tell me Immobillind device.what is Inertia switch? Help ! Please#######
August 2, 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 the DME is blocking start due a theft issue, you can check this using a BMW Scan tool. That would be the easiest way.
- Nick at Pelican Parts
 
TibosComments: Hi i have a 325i bmw it just cut off when i start it, it does not want to start the engeen keepon cutting but the fuel is still and it's on qouter tank than i went to buy the fuel when is half tank it started and move so can you please help.
July 31, 2013
 Followup from the Pelican Staff: If I am following you, the engine won't start when the fuel level is lower. See my comments below to another user with a similar problem.
You could have a faulty sending unit or a siphon issue. Check the actual fuel level when the tank reads 1/4. You can also test the sending units to see if they are reading correctly. - Nick at Pelican Parts
 
tomComments: I have a 1998 bmw z3 roadster is there an access plate to get to fuel pump or do I have to drop the tank
July 29, 2013
 Followup from the Pelican Staff: There is an access panel behind the seats. The carpet has a cut out flap you have to open. - Nick at Pelican Parts  
ButchComments: make sure that you remove the sending unit for the fuel gage or you will never get that pump out of the tank...
May 20, 2013
 Followup from the Pelican Staff: Thanks for the tip. - Nick at Pelican Parts  
Carol BComments: Thank you, very clear. I don't do repairs to my car but this will help my other half who does. We live in London, UK, and have had the car from new, its now nine years old and this is the first major fault we've had - we do keep it fully and regularly serviced. Thanks for the advice. Carol B
May 17, 2013
 Followup from the Pelican Staff: No problem, thanks for the feedback. - Nick at Pelican Parts  
ndoComments: Hi. my e36 316i petrol pump has only one pine in it, is this normal? Shud i also concider of changint it cz i can c that it has a problem
May 5, 2013
 Followup from the Pelican Staff: Not sure what you are asking. I opened a post in our tech forums. Someone in our community may be able to help. - Nick at Pelican Parts  
CiccComments: Hi Wes, regarding your three beeps. Check you clock - if it displays a alert symbol it means that you have selected the time alert. So every hour there will be three beeps alerting you to the time. I hope this helps
March 15, 2013
 Followup from the Pelican Staff: Thanks for the tip, this info is helpful. - Nick at Pelican Parts  
WesComments: Okay, I have a 1998 BMW 328i with a few problems. We are working with our local mechanic to fix but we have one that is stumping even him. With no obvious reason or external factor we can figure, there is an audible beeping at least once a day or more. It is three short beeps with no dash lights or any other signal or notifications. Any idea why our car is beeping at us?
March 2, 2013
 Followup from the Pelican Staff: Wes, here is some info from Cicc that is helpful,

"Hi Wes, regarding your three beeps. Check you clock - if it displays a alert symbol it means that you have selected the time alert. So every hour there will be three beeps alerting you to the time. I hope this helps"

- Nick at Pelican Parts
 
BARNSEYComments: i have a 1982 bmw 323i want to know where is the location and how to replace one
February 14, 2013
 Followup from the Pelican Staff: The fuel pump is located in the fuel tank. If I remember correctly, you will have to remove your fuel tank to replace the fuel pump. - Nick at Pelican Parts  
disatified comstumerComments: I have brought a new a few year ago check everything in the box under the hood, even had a dinostic done with the computer the dealer have. Direct power to the pump test. Chased wires through the car.The dumb techs at the dealer in Baton Rouge. I now think it is the fusible link on the positive cable from the battery? That most people problem/no starts.
February 4, 2013
 Followup from the Pelican Staff: Sorry your comments here are little bit confusing to me. Going to copy this question to the forms and if you can add additional information there than that would be most useful. - Wayne at Pelican Parts  
CharlieComments: Hello Wayne. Where's the location of the fuel cutoff/inertia switch on a '95 318i? And what did you mean to take a closer look at dme and turn signal switch? Have the same issue with no juice coming to the fuel pump fuse. Thanks
January 25, 2013
 Followup from the Pelican Staff: The inertia switch is located in the right side A-pillar.. - Nick at Pelican Parts  
ediasComments: What causes my bmw316i e36 to loose power and the engine also vibrates and smokes a lot
December 20, 2012
 Followup from the Pelican Staff: You could have an engine misfire creating the rough running and smoke. Check the DME for fault codes using a BWM scal tool. There should be fault codes indicating which cylinder is misfiring. - Nick at Pelican Parts  
BTComments: Nice write-up. I noticed you questioned why there are two fuel level senders in the tank. The reason is the E36 uses a two-lobed fuel tank and each lobe of the tank has its own fuel level sending unit. Ref: BMW SM.
December 7, 2012
 Followup from the Pelican Staff: Thanks for the feedback. - Nick at Pelican Parts  
oldschoolComments: I had the same problem as dusc136
i.e. I replaced a fuel pump assembly & the gauge stopped working stuck on empty
I found this solution: http://www.eabjr.com/Fuel-Gauge.php
and it worked !!
September 22, 2012
 Followup from the Pelican Staff: Thanks for the input on this one. We appreciate the help. - Nick at Pelican Parts  
dusc136Comments: I have a 94 318is, and I just replaced the fuel pump. The fuel gauge was working before when pump wasnt working but now after replace the fuel pump it just sits at empty. Could I have seated it wrong or is the new fuel pump faulty?
August 15, 2012
 Followup from the Pelican Staff: You probably got the float arm stuck inside the tank - Nick at Pelican Parts  
dimpalaComments: The problem that BMW made on it's E36 Models, being 318i's mine being a 1993 with no power to the fuel pump, and no spark to the spark plugs, Is that they placed the DME/ECU under the windshield cowling so when leaves fall from the trees and seeds, they clog that area up and then it rains, and it overflows guess where ? Onto the DME/ECU causing it to eventually short out or give false readings, making your car not start. Trying to find a used one is becoming more tuff and you shouldn't have to pay more then 150.00 dollars for one. I thought this should be known being it costed me almost $1.500.00 dollars to figure this out. The DME/ECU is located on the passenger side firewall. Your welcome and you owe me . . . . . . . . dimpala1964@gmail.com
August 8, 2012
 Followup from the Pelican Staff: Thanks and try to keep that area clear of debris in the future - Nick at Pelican Parts  
SCOTTYComments: HI I GOT A BMW 318CI W REG AND I JUST BOUGHT THE BMW AND I START TO GET STRONG SMELL AND FOUNS THERE IS FUEL ON TOP OF THE FUEL PUMP AND NO RUBBER SEAL TO CLOSE IT IS THAT CAUSE LESS POWER AND MANAGEMENT LIGHT COME ON TILL THE RUBBER PUT IN AND SECURE ? THANKS
July 28, 2012
 Followup from the Pelican Staff: Yeah the rubber seal holds the gas vapors in the tank and can cause and EVAP code if it is leaking - Nick at Pelican Parts  
Bill Comments: my 2004 530i runs good but sometimes will stall then show engine malfuction reduce power after a while it starts and runs fine. I'm wondering if this is a common problem and could it be the fuel pump. Also the filter is in the gas tank could this also be related to the problem. Thanks
July 13, 2012
 Followup from the Pelican Staff: Is the check engine light coming ON? If your fuel pump fails the engine will lose power and stall. So you can't rule that out. You'll need to perform a few tests to determine the problem. I would suggest testing the fuel pressure when the engine stalls and performing full diagnostic scan. - Nick at Pelican Parts  
TDComments: Great article, like all your others. I have a 1992 325is that has lots of problems. It was poorly maintained by previous owners and it takes all I can do to keep it drivable. My latest catastrophe started as a strong gas smell in my garage after the car is parked a while. I tried various things to diagnose it but I'll skip to the part where yesterday my car wouldn't fire up at all. The car had been sitting about a week because I was riding my motorcycle to work all week. Aside from that, the only out of the ordinary thing was that I had just filled up the tank and lately I had been keeping it a few gallons low because the gas smell didn't seem as strong when I did that.

Of course the first thing I thought of was fuel problems. I shorted the relay terminals to see if the pump was working and I got a nice loud hum. So the next thing I did was remove the cover under the back seat to make sure the fuel was going to the right place. When I removed the cover I was shocked to see the top of the fuel pump filled to the brim with gas. it was completely submerging the electrical connectors. The thought that I just applied 5 amps of current to a pool of gasoline nearly made my heart stop. I immediately disconnected the battery and then pulled the driver's side cover off. Same story. So I used a whole roll of paper towels sopping up the gas in both units and then started looking at hoses.

The hoses don't look brand new but I did not see anything that would cause a leak. All the hose clamps were tight and the hoses didn't look like they were rotted or soft in any places. But while I was looking around in there I noticed that the sender unit was filling back up with gas! I dried it back up and then stuck a dry paper towel at the base of one of the hose connections. No gas was coming from there. I did the same thing on the other. Also dry. But sure enough, the sender unit cup was slowly filling up again. So I dried and looked and dried and looked and dried and looked, and for all the world it looks like the gas is just condensing at the bottom of the cup. I checked the pump side and it was slowly filling back up too.

So my question is... what in the world? I am completely at a loss here. Have you ever heard of anything like this? Do I need to replace the pump and sender? The car will start now that I dried up the units but they are still slowly filling and I don't want any voltage near a pool of gas. Any help or guidance would be invaluable. Thank you!
March 18, 2012
 Followup from the Pelican Staff: I have seen cracks develop at the top of the fuel pump module and at the plastic eblows coming out of the tank. Try using a mirror to locate the source of the leak. Make sure you are working with good vetilation, fuel vapors are dangerous. - Nick at Pelican Parts  
futureComments: how do I connect the two fuel pump to work on 95 m3.....right now only passage side working..not drive side
March 12, 2012
 Followup from the Pelican Staff: There is only one fuel pump used in your vehicle. I would guess that there is a problem with the siphon system. Remove both fuel tank lids and inspect the lines. Something may have come loose or is broken. - Nick at Pelican Parts  
bullComments: what is fuel jet pump on a 00 bmw 323ci
January 28, 2012
 Followup from the Pelican Staff: The siphon jet is used to transfer fuel from one fuel tank lobe to the other. It is needed due to the saddle style tank BMW uses. - Nick at Pelican Parts  
BbababComments: When you replaced he fuel pump did you have problems with lining up the metal line attached to the tray with the hole on the fuel pump itself? Car is a 325is 1993. Having difficulty making sure this metal line is in the hole on the pump itself. Thanks for help
January 25, 2012
 Followup from the Pelican Staff: Check that the pump is orientated correctly. If it is crooked, it will line up. - Nick at Pelican Parts  
GP KenComments: What a fantastic site! It's nice to know where to turn to when one has a problem.
My girlfriend has a 2000 323ci with 138K miles and has been experiencing an occasional engine stoppage while driving. After she coasts to a stop and waits 1 minute, the engine starts and runs fine for a few weeks. Then it happens again. She has taken it into a couple of shops that run the diagnostics who find only that everything checks ok except for misfiring on one or more cylinders. One shop replaced the fuel pump relay a few days ago. Would replacing the fuel pump be a good idea -even though it works? Or could it be some other problem?
January 18, 2012
 Followup from the Pelican Staff: I would test the fuel system before replacing the pump. Once the vehicle stalls, check fuel pressure, volume and quality. - Nick at Pelican Parts  
JerryGComments: My son has a 2000 323i and just pulled into a gas station in Pennsylvania. Tank was a quarter full. He filled it up but couldn't get the car to move away from gas pump. Starts, chugs at low rpm and stalls. Did this about 8 times and then pushed car to the side. Weather is about 28 degrees outside and he had already driven the car about 20 miles with no problem. Bad gas? Car has about 90,000 miles. Fuel pump is original
January 3, 2012
 Followup from the Pelican Staff: This could be bad gas. How was it running before he filled up? Iwould take that into consideration, if it was running fine before, only thing the fuel tank changed. - Nick at Pelican Parts  
KayComments: Hi, I have a M325i e36 -94'. My car starts normally in the morning with no problem. After 1-2 hr drive will truggle to start..it cranks many time until in eventually starts. Pls help?? TNX!
December 20, 2011
 Followup from the Pelican Staff: I'm betting the car is kicking out a bunch of fault codes when it can't start. Either that, or it may be a fuel pump / delivery problem. Check the codes using this article here: http://www.pelicanparts.com/bmw/techarticles/Mult-Code_Reading/Mult-Code_Reading.htm - Wayne at Pelican Parts  
JefferyComments: I have a '91 BMW 318is in mint condition. But I just noticed a gas line drip leak onto the garage floor under the drivers side door from what seems to be the line coming from the tank. It appears as soon as I turn on the ignition and the car runs for about 30 sec. A friend told me that the line may be dry rotted and the only thing that needs replaced. Can this line be replaced by accessing the tank from under the rear seat? Can the top of the tank seals, line, etc.. be accessed and serviced under the seat without dropping the tank and seeing a major repair bill?
December 19, 2011
 Followup from the Pelican Staff: Your car is either an early E36 or a late E30 - I believe that the lines coming from the tank are plastic, but they are joined with rubber at the connections. I would bet that the leak is coming from one of those connections. I would take a closer look at where the lines meet the pump in the rear of the car, and also at the junction of the leak to see if you can find that section. It also may be coming from the fuel filter connection, as it may be located in that area (depending upon your car). - Wayne at Pelican Parts  
jimComments: My 97 328i won't start until after the third attempt. It just cranks on the first two tries. If it's cold it takes longer. Most if the time when it starts it runs like a champ bust every once and a while when it starts it'll run rough and throw a misfire code, shutting it off and restarting it corrects this. Ive heard it is either the high pressure fuel pump is this the second pump in your article? or the cold start injector? This is a weird issue! Thanks for your thoughts.
November 21, 2011
 Followup from the Pelican Staff: A good starting point would be to test the fuel pressure and monitor it during cranking. It should be at spec within a few seconds. Pay attention to residual fuel pressure when the car is turned off it should hold pressure and not drop off quickly. If it does drop off, it could be leaking injectors. This would explain the misfire.- Nick at Pelican Parts  
J.R.Comments: Hey everyone...my 1996 E36 is giving me wrong levels on my meter...I just got a new fuel pump and installed it but I have the same issue....what could this be???
October 4, 2011
 Followup from the Pelican Staff: There are two fuel level senders in you fuelt ank, one on each side. I would remove them, then move the float while monitoring resistance. One is likely defective. - Nick at Pelican Parts  
M3 GuyComments: Hi, I recently bought a 98 M3 and after 3 days and cold setting in it's taking longer to crank over till starting. There was a electric Rad fan with manual switch put in that i suspect. It cranks over once warmed I'm thinking? Thannks in advance
September 30, 2011
 Followup from the Pelican Staff: Do you mean it cranks slow after a few days of sitting? A battery and charging system test would be the next step if they check out ok. test for a parasitic battery draw with a mili amp meter. it should be less than .020 mili amps after 16 minutes. If it has a draw remove fuses one by one and monitor the meter until the circuit is isolated. - Nick at Pelican Parts  
ZechComments: Hi my name is tech I have a 94 BMW 325is I ws going 90 in 3rd and accidentally down shifted in to 2nd it spit and spurted and stalled . I try to start it every once in a while and it fires then back fires and stalls. I still have got it running and really need my car for school any info would be greatly appreciated. Thank you
September 15, 2011
 Followup from the Pelican Staff: It sounds like what we call a mechanical over rev. At the very least this most likely bent the valves. A compression test will be the next step. - Nick at Pelican Parts  
KAYComments: My hooter just died off. ichecked the fuse it is fine. My heater control panel freezes
September 8, 2011
 Followup from the Pelican Staff: You may have an issue with the control panel. If it is locking up and not responding it may be defective. - Nick at Pelican Parts  
tomComments: Hey,
i think my fuel pump recently went bad on my 1995 bmw 325is. upon opening the passenger side fuel pump cover, i noticed my fuel pump only has 1 line connected to it, which seems to be the sending line slightly smaller. the other nozzle on the fuel pump is not connected to anything. is this normal? i however do have a rubber line that connects to the opposite side cover driver's side which is the fuel level sensor unit. is my setup currently correct or am i supposed to have 2 rubber hoses connected to the passenger side fuel pump assembly on my 1995 bmw 325is. please help, i've been having car starting troubles and i believe it's the fuel pump since it's really old and is not making any buzzing or vibration of any sort when i turn the key to the 2nd ON position. thanks
September 7, 2011
 Followup from the Pelican Staff: Your photo looks normnal. If the blue nipple is just a mold and not a functional line intot he sending unit, it is not used with your vehicle. - Nick at Pelican Parts  
roadhogComments: what is the fuel pressure of a bmw 318 e36 in bar or psi
August 27, 2011
 Followup from the Pelican Staff: Going from memory, somewhere around 3.0 - 3.5 bar. - Nick at Pelican Parts  
DANComments: can you give me photo of bmw 325i petrol pump inside tank
i want to buy it i dont know it look like
can yu help me thinx
August 24, 2011
 Followup from the Pelican Staff: Give our parts specialists a call: 1-888-280-7799 They will help you locate the right fuel pump. - Nick at Pelican Parts  
larrycapecoralComments: Hi this is Larry again. I was mistaken I did not mean replace the relay but I meant the wire connector to the fuel pump.
August 16, 2011
 Followup from the Pelican Staff: Got it, thanks. - Nick at Pelican Parts  
larrycapecoralComments: I have a 2000 bmw 323ci. Periodically it will not start. It may not turn over at all or if it does start it just chugs barely running and will not respond when given more gas except to nearly stall out. The Dealer indicates no problems but suggests it may be the Fuel Pump. I am going to do it myself and save about $600. My question is does this problem indicate a fuel pump problem to you? And if I change my fuel pump should I replace the relay as well it seems that if I have it all apart I might as well. If so is it difficult to rewire?

Hi this is Larry again. I was mistaken I did not mean replace the relay but I meant the wire connector to the fuel pump.

Thanks
August 16, 2011
 Followup from the Pelican Staff: When the problem is present, check fuel pressure, volume and quality to be sure.

It does sounds like it could be the fuel pump.

Replacing the replay with the pump is not a bad idea. This has been common practice in many repair shops for years.- Nick at Pelican Parts
 
RocoComments: Hi Roco from Oz, I have an E46 318 and it has no power, it starts and idles o/k but won't rev past about 2500rpm and is even worse underload. I have no warning lights on the dash. Can you help?
August 16, 2011
 Followup from the Pelican Staff: It could be a restriction in the exhaust like a plugged catalytic converter. this can be tested with an exhaust back pressure gauge. - Nick at Pelican Parts  
KelloggsguyComments: Hi Wayne I have a 1984 318I and I just changed to fuel filter and the car will idol but after it gets hot it shuts down. What do you think?
August 15, 2011
 Followup from the Pelican Staff: Was it running fine before you replaced the filter?

If so, check that the fuel filter and lines are installed correctly. if they are, check fuel pressure, volume and quality. This will helop you determine if the fuel pump has failed. - Nick at Pelican Parts
 
A. RamosComments: Where is the warehouse in Las Vegas located. I need a ton of part and would rather just stop in and pay and inspect to make sure it the right one... Any help would be great.
July 29, 2011
 Followup from the Pelican Staff: Give our parts specialists a call: 1-888-280-7799 - Nick at Pelican Parts  
J-LoComments: My car died a week ago it cranks but does not start it sounds like it wants to then just turns, the spark on the plugs comes and goes, coil is fine. Is it the feul pump?
July 20, 2011
 Followup from the Pelican Staff: You will want to check if you are getting spark, fuel injector pulse and fuel during engine cranking. One of these may be missing. Once you determine what is missing you can diagnose the issue. - Nick at Pelican Parts  
phComments: hi,I have some problem with fuel hose from fuel pump because of fuel hose at the connector to pump outlet swell up
and hose structure loos and soft it possible to cut cut some part of this area and connect by inserding some metal pipe and lock both with clip it will hert fuelpump in the future because of smaller hole [about 2 inch long only because if replace costly] I need your help sooner
June 29, 2011
 Followup from the Pelican Staff: You would have to drop the fuel tank to access the line at the fuel tank side. Then remove the line from the mounting bracket along the bottom of the vehicle and replace it. - Nick at Pelican Parts  
phComments: how can I change the fuel hose from fuel pump to the other end [I don't know] pls advise how to do DIY
June 26, 2011
 Followup from the Pelican Staff: You would have to drop the fuel tank to access the line at the fuel tank side. Then remove the line from the mounting bracket along the bottom of the vehicle and replace it. - Nick at Pelican Parts  
njComments: My fuel pump have went bad on me. After changing the pump myself, i've notice that the fuel gauge wasn't moving. Do i have to change the fuel pump sending unit again or just the fuel sensor level
June 22, 2011
 Followup from the Pelican Staff: I would inspect the connection at the sending unit. It's possible is it loose or damamged from when you replaced the fuel pump. - Nick at Pelican Parts  
zackbComments: i have a 91 325i, it turns but not start...what is going on???? i thought it was the battery but no...seems like its not getting the fuel or the spark. what should i do?
June 16, 2011
 Followup from the Pelican Staff: You will want to check if you are getting dpark, fuel injector pulse and fuel during engine cranking. One of these may be missing. Once you determine what ismissing you can diagnose the issue. - Nick at Pelican Parts  
PaulComments: I have a 328i e36 1996. It is running fine but the fuel gauge just stopped working and now the needle sits just above the bottom mark and the orange fuel light stays on. I have filled the tank and checked the fuses, all is well there. I have lifted out the seat and checked the wire connections, no change. There are 2 inspection plates, 1 for the pump with 1 hose & 2 electrical connections, the other has a hose and 1 electrical connection. Will I need to replace both sides given there are senders on both
Please advise
Thanks
May 14, 2011
 Followup from the Pelican Staff: You shouldn't have to replace both. i would suggest testing them to see which one is faulty. You can remove them from the tank, then move the float while monitoring resistance. - Nick at Pelican Parts  
4-Cylinders-Rock.Comments: Hello,

My '96 318ti one day didn't start up. Running fine, heavy rainy night, next morning just would not start, it chugged which I believe is referred to as "turning over" but no "spark"? Or simply no start.

I replaced fuel pump relays, new battery installed, and even replaced the DME with same Bosch number, the old one had slight oxidation on the mother board. I replaced it and nothing.

So I move on to the fuel pump. I found a used one, off a 100k mile '95, wasn't bad looking, sure, yellowed bottom plastic part, not too bad though, didn't seem burnt out. I replaced it with the advice here.

I then, started it up and since the ti sat for about a month, the battery was drained a bit, and it lost turn-over power and just ended up clicking. I had the new battery re-charged. Turns over with power but no starting.

What could be the problem then? Could the fuel filter be clogged, I'm on the street, sort of tough with traffic to lift the car but I may have to do it with a jack.

Something else? Its very difficult to find really good advice on this. I mean, I one can spend hours just searching and weeding through forums with dead ends.

In your article you stated at the end that "if it starts..." but there wasn't an "if it doesn't start try this, check this, could be that, need this..."

Please help, I just need to get this little hatch rollin' again!

Thanks very much.
May 9, 2011
 Followup from the Pelican Staff: You will want to check if you are getting spark, fuel injector pulse and fuel during engine cranking. One of these may be missing. Once you determine what ismissing you can diagnose the issue. - Nick at Pelican Parts  
MikeComments: I have a 1992 BMW 318i that just shut off as I was driving. I shifted in to second or third and then gave it gas to shift and it made a small noise and died. hasn't started since. I can turn the key and you can hear the starter and everything but the engine never catches. It sounds similar to the story on this page because it was on "E" for a while and then i got gas and drove a little, parked. left to go get something and then while i was driving back it died. Please let me know it you think it's the fuel pump. Before i buy it and find out it's not the fuel pump i want to have some assurance that it is. thank you
April 22, 2011
 Followup from the Pelican Staff: If the tank was on empty, the fuel pump may have failed from lack of fuel. You will want to check if you are getting dpark, fuel injector pulse and fuel during engine cranking. One of these may be missing. Once you determine what ismissing you can diagnose the issue. - Nick at Pelican Parts - Nick at Pelican Parts  
JdvorweComments: My '87 325 has been sitting for a year and I have decided to sell it. I went out to make sure it still runs not thinking about bad gas/debris in tank and started it up. The car started up fine with a jump and addition of more gas but conks out when the accelerator isn't applied doesn't idle. I thought it might be a few things TPS, Ignotion Coil, Fuel Pump, etc and after reading your situation above it sounds very similar was wondering if yours would start up but not idle after you put in the new gas or straight up didn't start.
April 9, 2011
 Followup from the Pelican Staff: It wouldn't start at all. If you suspect the fuel pump, then I would check the fuel pressure when 12V is applied directly to the pump. - Wayne at Pelican Parts  
LeetosComments: I have a 1999 BMW 3231 Sedan that recently acted like it ran out of gas. If I let it sit for a while it will run and start normal for about 5 to 8 seconds, then dies out. I replace the fuel filter thinking it may be clogged. While I had the fuel line disconected I turned the key and got a quick stream of gas...then nothing. Still does the same thing after replacing the fuel filter. Was going to change the fuel pump next.....any other suggestions?
April 6, 2011
 Followup from the Pelican Staff: Sounds like it might be the fuel pump or a clog in the lines. See if you can hotwire 12V directly to the pump and run it while measuring fuel pressure. That might give you an indication as to whether the problem is in the pump (or it might be some type of clog in the lines). - Wayne at Pelican Parts  
jasminesdadComments: Both the left side sending unit and the fuel pump started leaking gas pretty bad recently. My car smelled like a refinery because both units had about a cup of gas pooled on top of them. I was hoping it was just the seals, but I read somewhere that a leak that bad probably means the units are bad or cracked.
Two questions:
A How do you replace those fuel pump hoses if they're old and brittle? I think I accidentally disconnected the big one from what ever it connects to on the other end. Bentley manual doesn't shoe the hose routing.

B where can you buy those hoses? They do not seem to be listed in the diagram for the part? Can I just use any old fuel line hose from my local auto part store?

Thanks for the great Tech Articles!
March 24, 2011
 Followup from the Pelican Staff: If you have fuel at the top of the units, then the connectors are most likely leaking. The hoses themselves are pretty robust plastic, I haven't seen them leak personally. I would probably replace the connectors if you can on the hoses first - you should be able to find replacement connectors at an auto parts store. To get the new connectors for your BMW, you would have to purchase the whole line. We can special order the lines from BMW if you cannot find them in the catalog (I don't think they are there). - Wayne at Pelican Parts  
13monkeesComments: I have a 1994 325is that lost acceleration today. I was driving I could press the gas and the RPMS went up, the car was in gear and you could feel that it was, but it wouldn't go faster. I could smell gas and there appeared to be a leak of some kind, but we can't find it. At first the car wouldn't start up after it stalled, but now it does and it drives, but I don't know for how long.
March 8, 2011
 Followup from the Pelican Staff: I'm sure that you have some fault codes that will guide you in which direction to look. Check out my article on this here: http://www.pelicanparts.com/bmw/techarticles/Mult-Code_Reading/Mult-Code_Reading.htm - Wayne at Pelican Parts  
kayComments: i have a 1995 bmw 318is and when i push the gas it has no power but if i pin it it get its whats wrong help!!!!!!!!!!!!!!
March 6, 2011
 Followup from the Pelican Staff: Check out my article on reading fault codes - you need to let the computer tell you what's wrong before you can start diagnosing: http://www.pelicanparts.com/BMW/techarticles/Mult-Code_Reading/Mult-Code_Reading.htm - Wayne at Pelican Parts  
ScottComments: Great technical article. Before I attempt this fuel pump I have a question. My 92 325is manual will not start or crank. The only thing that occurs is that all electrical comes on but when I turn the key in the ignition the engine will do nothing. I've check all electrical and do show voltage feeding the fuel pump when I unplugged it. When plugged back in and I try to start the car there is not sound or vibration from the fuel pump. I guess the question is if the only thing that happens when turning the ignition key is electrical would the pump cause the car not to crank or attempt to turnover? Thank you for your help!
March 2, 2011
 Followup from the Pelican Staff: The fuel pump will not run until the car is cranking - this is a safety mechanism on modern cars. So, the problem is not with the pump, it's with why your car won't crank. Sounds like it could be an ignition switch or starter issue? - Wayne at Pelican Parts  
telComments: hi my bmw 316i 1996 run out of petrol and it will not go
January 20, 2011
 Followup from the Pelican Staff: Fill it up with gas! Or, if you have already done that and the pump has failed, then you need to replace the pump. The same thing happened to my E36 when I let the fuel level run down very low. Basically, a whole bunch of debris in the bottom of the tank clogged the pump and the car died. We had to replace the pump in the parking lot of a Las Vegas hotel! - Wayne at Pelican Parts  
mttComments: have 2002 bmw 325ci..my car stopped on highway l was in another state that's why l had to take my car local shop.they said problem was fuel pump after they replaced that car started to run.but after that nothing works on my Instrument Cluster like speedmeter fuel gause etc nothing.and they don t know what s wrong they said they check all wires and fuses and nothing wrong.any idea..thanks
January 12, 2011
 Followup from the Pelican Staff: Odd, someone in the Boxster forum just had the same problem. Unfortunately, the only idea I could come up with was to reseat the connectors on the gauge cluster. It does sound like they messed something up with the electrical system. - Wayne at Pelican Parts 
devoComments: i was trying to find a diy on changeing the fuel pressure regulator on the fuel line near the fuel injectors on a 95 325i e36.
December 25, 2010
 Followup from the Pelican Staff: I discuss this a bit in my fuel injector replacement article, located here: http://www.pelicanparts.com/bmw/techarticles/E36-Injector-Replacement/E36-Injector-Replacement.htm - Wayne at Pelican Parts  
TomComments: Thank you for posting all your FAQ. 2001 M Roadster with 26,000mi - fuel pump is very loud. Turn key, cycles on, engine starts then pump lowers frequency. Frequency increases with RMP to about 3000 then steady. The fuel system management is supposed to follow the engine demand this way. So it appears the pump is getting all the right juice and I have plenty of power. The tank is 13.2 gallons and I usually fill with 10-12. Why is it so loud? Would you recommend replacing the filter on the pump and the inline filter?
December 23, 2010
 Followup from the Pelican Staff: A loud pump could be one of two things. First, it could be a sign that the pump is beginning to fail, so keep an eye on it. Seconly, it could also mean that it's not isolated properly from the chassis. I have an older 1972 911 that a previous owner installed a fuel pump into with no rubber isolation - the thing was so loud, I coudldn't hear anything else! I had the pump put on rubber bushings and it went stone cold quiet. So, with your pump, you might want to check the installation, or rubber seal, etc. - Wayne at Pelican Parts  
beamerockComments: i have a 1992 bmw 325i and i am replacing the fuel pump if i can get the cap of i tryed the screwdriver way tap it with the hammer notthing i started off with little taps and then strong tap and nothing put peeling plastic where do i find a tool for this i even use a big ol pipe/oil wrench with teath and not one move if i can get it off il saw it off just need to get a new cap then any help please car is in a bad hood thanks
December 18, 2010
 Followup from the Pelican Staff: Yes, there is a special tool for the removal of this cap, if you can't get it off with some standard tools. I've found that channel locks seem to work pretty well. - Wayne at Pelican Parts 
DuffComments: Gday.really great site his one..im replacing fuel pump,
in a 328i 1996 coupe.the pump colour is blue,i was told
i can use a green pump,however..after i fitting the green pumpwhich looking the same as the blue pumpi notice that the wiring plugs dont fit,im thinking there is a reason for this...or can i modify this plug and all will be "sweet" ?
November 26, 2010
 Followup from the Pelican Staff: I'm not sure - all the pumps I've seen have been white. I don't like to mess around with fuel pumps, as you need to make sure that you have the proper one in there, or it may cause dangerous situations in the future. - Wayne at Pelican Parts 
PaulComments: I have a 1994 bmw 325i. The car runs out of fuel after using approx. 8 gallons after each fill up. I pulled the pump/sending unit and noticed that the filter sits in a white plastic box in the bottom of the tank. Does this box have holes for the fuel to run in that could be plugged?
November 21, 2010
 Followup from the Pelican Staff: I don't think there are holes in the bottom that would cause this issue. More than likely, the gas pump is only allowing you to pump in 8 gallons. The tanks on these cars are two part, and they split over the hump of the car. That might have something to do with this issue, although I honestly can't remember hearing about something like this before. - Wayne at Pelican Parts 
MacComments: Hi Wayne,
Yesterday i had a horrible night.
my 328 CAB e36 stalled on me. It would start but it would not allow me to press the padel for gas. it cuts.
I checked the pump and when i removed the inlet pipe from the pumps cover it spits petrol back from that pipe. please advise.
October 11, 2010
 Followup from the Pelican Staff: Check fuel pressure and volume. Low fuel pressure would allow the engine to start but cause a hesitation.
- Nick at Pelican Parts
 
ikaComments: thanks for the reply. much appreciated. i am not sure on how to check the fuel pressure. could you link me to an article, or maybe briefly go over it, if its not a problem?

thanks a lot
September 26, 2010
 Followup from the Pelican Staff: Sure, not a problem. Hook up a flexible hose to the fuel pump and put an inline fuel pressure gauge on the line. As fuel flows through the line, you can read it on the gauge. Might have to be creative with the connectors that connect to the lines that head to the chassis in order to get a good reading. - Wayne at Pelican Parts 
ikaComments: i am experiencing loss of power for some time now, and having changed fuel filter, air filter, and spark plugs, i went to examine the fuel pump. i was surprised to find it had only 1 hose, unlike the diagrams shown here and elsewhere on the web. there are two sockets though. i read in one of the comments that there is a non return fuel pump. is this the case with me that i have the wrong fuel pump for the type of system that has been installed on the car?
September 20, 2010
 Followup from the Pelican Staff: You didn't mention which car you have, but I'll assume is a european model, for which some of them didn't have a return line system. I'm not sure why though. As for your problem, I would check the fuel pressures from the pump, if you think the problem might be there. - Wayne at Pelican Parts 
JnsnamsComments: Love the walk thru..

My question... I have a 1995 m3 and I went to leave work Monday and the car wouldn't start.. I pulled the back seat and sure enough not hearing anything from the pump?? I have 2 plugs on my fuel pump.. On the 2 plugs there is 4 wires.. Only one gets power when I turn the key and try to crank the car?? Wich plug is for what? And should only one be vetting power?
September 16, 2010
 Followup from the Pelican Staff: Two wires supply power to the pump, and the other two are for the fuel tank level sender, which is integrated into the pump. So, if you're getting power to the pump, but it's not turning, then it sounds like the pump indeed may be faulty and need to be replaced. - Wayne at Pelican Parts 
dewaComments: i changed ma fuel pump on 1994 bmw 318 but there is no power to the pump .i checked for power on the fuse and there is nothing . i tried to start the car and it wint start
September 6, 2010
 Followup from the Pelican Staff: Power to the pump is controlled by the DME, which gets it's que from the turn signal switch. I would take a closer look at both of these. Also check the fuel pump relay. - Wayne at Pelican Parts 
suffyComments: how do i check my fuel pump on e36 m3 evo 1998 and where is it located?
August 24, 2010
 Followup from the Pelican Staff: Should be the same procedure and location as is detailed in the article above. - Wayne at Pelican Parts 
ChadComments: Hello, I will be installing a new fuel pump on my e36 95'318ti. After my car lost all acceleration while driving on the freeway. Already replaced the fuel filter using your tutorial. Al went smoothly, thank you!

My question is concerning figure#8. It shows a yellow tray, does the new fuel pump screen rest in that tray upon putting the new pump in?
August 22, 2010
 Followup from the Pelican Staff: The pump only goes in place in one orientation, I believe that when you install it, it does automatically line up with that tray on the bottom. Good question, I haven't been asked that one before. - Wayne at Pelican Parts 
kovacsklComments: hi from kovacskl ,i was wondering if you can help mi dilema .well i had a e36 m3 with turbo and that's why i had to install an aftermarket high debit fuel pump for the engin to don't starve ,and afcourse a aftermerket a fuel regulator ass well .Now my engine died and i bought an ather engine stock and i was wondering i the stock regulator will get damaged if i use this debit fuel pump or i should install also the aftermarket regulator .
Thank you
August 20, 2010
 Followup from the Pelican Staff: I really have no clue, but if you have an aftermarket pressure regulator that works with the system, I would use that one. - Wayne at Pelican Parts 
JatComments: My fuel gauge stays on empty even after filling up, i have changed both fuel pumps/senders. What else could be the problem? Should i replace the fuel pump fuse?
August 9, 2010
 Followup from the Pelican Staff: Fuel pump fuse won't be the culprit - it's either something with the gauge cluster or the wiring to the gauge cluster. I would check the values coming into the back of the cluster (if you have the pinouts), or swap in a good, known cluster if you have access to one. - Wayne at Pelican Parts 
europeantouchComments: I have a 2000 328CI
The fuel pump was bad no fuel coming out with key on or cranking and replaced it. But the car still wont start. If I spray carb cleaner in the air boot it runs for as long as I spray the carb cleaner. It had the code for the trottle/gas pedal sensor switch but will that cut off the fuel ?
July 27, 2010
 Followup from the Pelican Staff: Check your fuel pressure and the power to the pump - the electrical connector may not be seated all the way after replacing it? - Wayne at Pelican Parts 
steveComments: my pump on left side passenger is missing the return line?
where should i route a new one and attatch it to? it is leaking fuel out of the open port. I looked in bentleys etc. no one shows where this line should go..
July 15, 2010
 Followup from the Pelican Staff: There should be two fuel lines there, although I have heard on later cars, it's might have been turned into a non-return system. You may have a non-return system in your car (not sure which car you have), and if such, then it looks like the wrong fuel pump may have been installed at one point. - Wayne at Pelican Parts 
leamacComments: Can anyone tell me what is wrong with my 1998 bmw 318ti my car was idling when the revs dropped and it stopped, i tried to start it but it wouldn't the battery is good it just will not fire up. just lately when starting it will not fire up turn the ignition off then back on and it would fire up. Could this be the fuel pump?
June 25, 2010
 Followup from the Pelican Staff: Could be, but I would pull the codes out of the engine first. See the tech article on this site about reading the fuel injection fault codes from the computer. - Wayne at Pelican Parts 
HeathenComments: For anyone taking the pump's retaining ring off.. Use channel locks fully opened and grab opposite ridges. For the ring not grabbing correctly... I'm sure the pump and gasket are not seated flush with the tank. I've done it s few times to know to pull it back out and reseat them.
June 7, 2010
 Followup from the Pelican Staff: Thanks for the tip. - Nick at Pelican Parts  
nathanComments: i have a bmw 316i coupe. the prob ive got is that as i pull away in 1st it is kangarooing badly ive changed the plugs fuel filter and im at a lose as in what to do it only does it in 1st. its like the fuel,s not gettin to the injectors. then other times you can pull away no probs. it,s becoming worse and worse. really imbarrasing as well. so over to you guys for ideas of what to do.
May 4, 2010
 Followup from the Pelican Staff: Take a look at the article about reading fuel injection codes - the car will typically tell you what it thinks is wrong with it. - Wayne at Pelican Parts 
IIRComments: I have a 1994 325i bmw, with a fuel tank pressure code. I change the fuel tank cap but the code can not reset, trying to get help.
April 12, 2010
 Followup from the Pelican Staff: You likely have a leak somewhere in the system. Imspect the hoses and charcoal canister for signs of leaks. Fuel vapor odor is a good indication of a leak. - Nick at Pelican Parts  
HabboodComments: anyone has any idea why is it my fuse pump on my 1994 bmw 325i doesn't have power. I checked all other fuses and they all have power to them.Please help me!!!!

April 9, 2010
 Followup from the Pelican Staff: The fuel pump relay may not be activating. Check the if the fuel pump relay is being commanded on. You can also try jumping it out to confirm the vehicle will start once it is activated.

You will want to grab a wiring diagram to trouble shoot the circuit. - Nick at Pelican Parts
 
CaitComments: Hi -
I ordered my part here off of Pelican and installed today. . . unfortunately the engine still is not turning over. Originally took the car to a certified BMW repair shop, had them run the tests and they told me that when they plugged the little "reader" machine into the car that it had said I needed a new fuel pump. . . any advice on where to go from here? My husband is complaining that I should have just paid $700 to get it fixed ;
April 4, 2010
 Followup from the Pelican Staff: You will want to check if you are getting dpark, fuel injector pulse and fuel during engine cranking. One of these may be missing. Once you determine what ismissing you can diagnose the issue. - Nick at Pelican Parts - Nick at Pelican Parts  
VernonComments: Hello guys I drive a 1992 Bmw 325 is i recently installed a new Fuel pump the car runs but it sputters and make aloud popn noise from under the hood like its starving for gas if i rev the engine the rpms gos up and the car shuts off i followed every step any suggestions guys
March 26, 2010
 Followup from the Pelican Staff: Popping through the intake can be caused by a timing problem or lean condition. Check to see if you have any vaacuum leaks. If none are found, check engine compression.- Nick at Pelican Parts  
sk8ratComments: I own a 1996 381 ti and my fuel pump went at 175,000 miles. I went to start it and nothing. I went under the hood checked the fuse and detemined it was good. Then I decided to see if there was any fuel pressure. I was in a parking lot with no tools so I used a ball point pen to poke the schrader valve on the fuel rail. No fuel pressure! Then I decided to bang on the gas tank with a lug wrench! Fixed!!! it started just fine! HAHA not a fix I just did that to get home. Easy job only took about an hour! Thanks for the picutres!
March 25, 2010
 Followup from the Pelican Staff: Thanks for the feedback. Glad you got it fixed. - Nick at Pelican Parts  
Rodney-0Comments: I have an 89 535i and lately the idol when stoped at a light seems to go up and down from 500 to 1200 sometimes and when i take off the car boggs and doesnt have much power and then sometimes its fine. Is this a fuel pump problem or bad fuel filter?
March 25, 2010
 Followup from the Pelican Staff: If it was the fuel filter or pump, the issue would be present under load also, not just at idle. I would check the idle control circuit and check then engine for vacuum leaks. - Nick at Pelican Parts  
michael hondrixComments: I ran my 2000 328 low on fuel now the engine sounds rough and has lost power. Is this the pump or could it be the catalyst?
March 9, 2010
 Followup from the Pelican Staff: I would check fuel pressure, volume and quality. You mayhave damaged the fuel pump running it low on fuel. - Nick at Pelican Parts  
artisticComments: my engine cut out on me as i was drivin. car wouldnt turn. would it be the fuel pump? few days back my fuel gauge was playin up. people tellin me its the cambelt. wat do u advice?
February 25, 2010
 Followup from the Pelican Staff: I would check fuel pressure, volume and quality. This will tell you if it is the fuel pump.

If you suspect the timing belt, check engine compression. - Nick at Pelican Parts
 
Dr3aMComments: I have a 318 e36 Manual, It has been acting strange lately. That day when I was running on 3rd Gear around 4k RPM, the power losses until I switch to 4th Gear , everything works fine but when it comes to 4k RPM, the same thing happens. After 1 few days, went out and buy something...just like 20mins my car wouldn't start but just crank. Expert's suggestion is much appreciated...Please do tell me what I needed to replace and change.
February 4, 2010
 Followup from the Pelican Staff: I would check fuel pressure, volume and quality. A faulty fuel pump could cause your symptoms. I would also check backpressure and engine compression.- Nick at Pelican Parts  
manxeeComments: Hi I've got a early 1994 E36 316i saloon and lately the car has not been running very well. There is fuel in the tank and the acceleration is slow and even though I've had the engine running for some time it has trouble starting if i stop the engine and re-start it. Any advice welcome as i not sure if its a fuel pump problem or not. Thanks
February 1, 2010
 Followup from the Pelican Staff: I would check fuel pressure, volume and quality. A faulty fuel pump could cause your symptoms. .- Nick at Pelican Parts  
LovebmwComments: I have a 323i E46 and my fuel level is always on half way even if i fill the tank up, what could be the reason. the car runs perfectly.
January 10, 2010
 Followup from the Pelican Staff: Are you sure the vehicle is taking the correct amount of fuel when filling? if it is, you could have an issue with one of the fuel level senders. - Nick at Pelican Parts  
ElvisComments: Thank you Wayne for your response.You are right...i went with my car at the mechanic and it told me it was the injection pump.As i don't have enough money right now to change it the problem will persist until after the holidays.Thanks again.
December 19, 2009
 Followup from the Pelican Staff: No sweat, good luck with this in 2010! - Wayne at Pelican Parts 
ElvisComments: That was an awesome tutorial...it makes it seem so easy.I have a 92 325TD e36,and about a year ago i had my mechanic change my fuel pumpit just woud not startalso ruined my electromotor at that time.The problem was i didi'n have any money at that time so i changed it with a second hand one.Now i have the same problems i had before it broke last time:thaks a while to start when the engine is hot,gives a lot of smoke when it finally does and the power...lets just say that if a bus full of passengers wants to embarrass me ,he can.I am seriously considering in buying a new one from here but i would like to ask first to be sure:Do you think its the fuel pump or just the presure regulator?Thanks in advance.
P.S.-if i'm gonna change it,i can do it myself thanks to you:D
November 30, 2009
 Followup from the Pelican Staff: The fuel pump usually either works or it doesn't. It's not an item that fails and then begins to not put out enough pressure. If it's on and running, then it's usually good. You can always check it with a fuel pressure gauge, but I'd look elsewhere for the problem if I were you. - Wayne at Pelican Parts 
JamesdeanComments: I've got 94 325i convrtable cranks but no start. It's got power at two wires on each coil, but no power to fuel fuse. When I jump the fuse it sounds like the fuel pump is coming on, and there is fuel pressure. But still no start. Btw it sounds like the fuel pump is under the intake. Where and what color is the pump relay and does it control anything else?
November 25, 2009
 Followup from the Pelican Staff: When testing for power and ground to the fuel pump it has to be done during engine cranking and should be checked at the fuel pump under the inspection cover, under the back seat. The relays should be tested with the aid of a repair manual. I would grab a repair manual. It will list the special tools and each step of the procedure. Give our parts specialists a call: 1-888-280-7799 They will help you find what you need. - Nick at Pelican Parts  
greatcasaComments: The 95 M3 just cut out yesterday while driving yesterda. Neighbor and I found that the fuel pump fuse was blown. I replaced and it blew again on the way to work. He says this means its definitely the pump as when it warms up about 15 miles it shorting out the fuse. Please let me know your thoughts. Need to get this ordered today and overnighted to be here for the weekend if possible. Thanks!
November 12, 2009
 Followup from the Pelican Staff: The fuel pump amperage draw can be tested by making a fused jumper wire at the fuse and connecting an amp meter. It could be the pump or a short in the wiring. - Nick at Pelican Parts  
KheronComments: Hi, i have a 318i e36 , would a 325i fuel pump work for my 318i

Help would be much appreciated.
November 12, 2009
 Followup from the Pelican Staff: There are a few different fuel pumps used in the E36. The year and production date of the vehicles or part numbers would be needed to cross reference them. - Nick at Pelican Parts  
mat12001Comments: Hi i have a problem with my 93 325i. working fine then all of a sudden wouldnt start. relays are working fine visually inspected and the fuse for fuel pump is fine no 18. but no meter reading at the fuel pump end any ideas. is there a fuse im missing maybe.

thanks

mat
November 11, 2009
 Followup from the Pelican Staff: The fuel pump circuit is powered only during cranking and stays energized if it starts. Are you testing for power and ground during cranking. If the power or ground is still missing refer to the wire diagram for testing at the dme and fuel pump relays. - Nick at Pelican Parts  
VADERComments: Thanks to all who helped me with my Crank Shaft Position Sensor / Fuel Pump / Engine not Starting Issue! I successfully got my baby running and sounding good once again ;-.

Thanks for all your prompt and professional advice!
August 30, 2009
 Followup from the Pelican Staff: Thanks for the follow up. We appreciate it. - Nick at Pelican Parts  
naiComments: i have a 318i e36 and my fuel level is always on empty even if i fill the tank up, what could be the reason. the car runs perfectly
August 29, 2009
 Followup from the Pelican Staff: Your fuel sender is probably shot. There are two on your car, I'm not sure which one is bad. One of these is built into the fuel pump and one is located on the other side of the tank. It also might be a wire harness problem too. I would probably replace the non-fuel pump one, as it's not terribly expensive, and then see if that fixes the problem. - Wayne at Pelican Parts 
VADERComments: Hello,

After you perform this procedure... How long should you wait until you reconnect the BATTERY???

August 29, 2009
 Followup from the Pelican Staff: It's okay to reconnect the battery after the fuel pump tank is closed up and sealed. - Wayne at Pelican Parts 
South AmericaComments: hi my bmw 323 2000 crank but dosent want to star, is the problems with the fuel pump?
Thank you
August 22, 2009
 Followup from the Pelican Staff: Follow the path that lunusb (above) has taken with respect to diagnosing - check the fuses, the relays, and the contact voltage out of the relay too. - Wayne at Pelican Parts 
desiComments: my 318is switches off anytime it wants to.. it does not start again unless i bang the petrol pump.. it goes good until i switch it off again
August 19, 2009
 Followup from the Pelican Staff: Offhand, I'd say it seems like you need a new pump, but I would also check the fuel pump / DME relay too. - Wayne at Pelican Parts 
JMAguilarComments: Is there a fuel expansion tank on an 1994 E36 318i? If so, where is it located? Thank you.
August 12, 2009
 Followup from the Pelican Staff: I believe so, but I can't recall off the top of my head exactly where it's located. - Wayne at Pelican Parts 
JMAguilarComments: Hello, Great Info. I have a 318i E36, my car's problem is when it gets filled up all the way, it is not leaking, but I cant keep it in the garage because of the strong fuel smell, this only happens when it is all the way up or close to filling up. Any ideas?
August 11, 2009
 Followup from the Pelican Staff: There might be a crack in the tank, or in one of the hoses, or in one of the seals around the fuel pump. I would start by replacing the big seal around the pump shown in the article here, and see if that fixes the problem. - Wayne at Pelican Parts 
bosshogg85Comments: Nice right up very clear. If my car only runs good on 1/4 tank of gas and poor and a lose of power when more than a 1/4 of a tank of gas could this be the pump? 94 e36 318is
August 9, 2009
 Followup from the Pelican Staff: It certainly could be. It would probably be a good time to replace it. - Wayne at Pelican Parts 
JohnnieComments: I cant get the big circular disc to sit flush. One side will be lower than the other. I can tighten it but if i tap it with the hammer more it will become loose. Any idea what im doing wrong?
July 31, 2009
 Followup from the Pelican Staff: Seat the disc first by turning it backwards (counter-clockwise) and then tightening it. That should work. - Wayne at Pelican Parts 
StianComments: Wayne:
My car, when started is leaking large amount of fuel from the top of the gas tank.

Any ideas?
car: Bmw 1991 318i e36

p.s: the fuel is leaking right on to the ground
July 8, 2009
 Followup from the Pelican Staff: Could be one of a few things. Check the top of the tank for cracks (they are plastic). Also check the big rubber seal, and make sure that both hoses to the pump are solid and don't have cracks. Don't drive the car obviously, in this condition... - Wayne at Pelican Parts 
StianComments: Hello.
First let me say great description on how to change the pump.

My problem is that i don't know if it is the pump or hose going from the pump.
Here is what i know. When I start the car it will take a couple of seconds befor gasoline starts runningyes it is alot from under the car. When looking at the flow of the gas it looks like it's coming from the top of the fueltank.

What do you suggest I do first in order to find out what/where this is coming from. Do I have to drop the tank on my BMW 1991 318i E36 or just check the fuel pump lines under the rear seat. Please help me!

sincerly
Stian
July 7, 2009
 Followup from the Pelican Staff: *confused* - What is the problem? - Wayne at Pelican Parts 
Ajid 9669Comments: Hello, i just got a problem. Fuel pump fuse suddenly blow, then i change a new one. You know when the engine running the fuse is too hot. Second time i change the fuse engine still cannot run. Can you advise. Did the fuel pump problem. One more, sometime i smell a fuel. Please help.
June 21, 2009
 Followup from the Pelican Staff: Check your wiring for a short using a multimeter with the fuel pump unplugged. Sounds like you have a short somewhere, either in the wiring or internal to the pump itself. - Wayne at Pelican Parts 
BrianComments: The fuel pump in my 1996 318tiM44 just failed. I verified this by shorting the relay and verifying voltage to the pump. Like you did above, I recently ran my car very low on gas. What bothers me is that my car seems to lack a return line to the pump. I have attached a picture of this. The grime on the inlet shows that it hasn't had one in a long time. Could the other 2 lines in my picture be acting as a return?

Any ideas?

Thanks. I just bought a pump from this site, and the helpful guides will bring me back for more when I need them.
June 20, 2009
 Followup from the Pelican Staff: That's indeed odd, I haven't seen that before. Perhaps the 318 doesn't have a return line for some reason, or it recirculates in the engine compartment? I would install it as you took it apart, but be sure to put a cap on the other open plug. - Wayne at Pelican Parts 
BillKirkComments: Great fuel pump replacement document here, Wayne. I love the 'projects' that you have covered, I've had your site bookmarked for several years. As a former 914 Porsche owner and for the past ten years a BMW 3er and 5er owner you cover all the bases for me. When you had the fuel tank and pump all back together again, did you have a fiddle with the bad pump to see what the specific problem was? Did it appear that if you hadn't been stranded near a parts store with BMW fuel pumps that you might have been able to repair the pump and get home without a replacement pump available?
It may be coincidental, but my E36 fuel pump has packed up after it was running very low on fuel and I opted for a partial tank of E10, instead of the premium unleaded it's been fed with for the past 230,000 kilometers. It ran normally on the way home as I ran several errands around the town. It sat unstarted for a few days over a long weekend holiday and started spluttering almost immediately when started on Tuesday. It died completely about a mile from home. I tinkered with it on the side of the road and after about half and hour it started again with the same spluttering. I got halfway home and it died again, terminally.
Even bypassing all the relays by running a jumper from the positive battery post to the number 18 fuse that connects directly to the pump there is no joy. VOM connected across the plug at the pump shows 12v thru the pump's ground wire. I haven't pulled the pump yet as there is a huge amount of dust and debris on and around the pump and I don't want all that crap falling into the tank as I open it. The car is still 150 meters from home so will need to find a cordless vacuum cleaner or buy a few more extension cords for the old Hoover.
I would hate to source a new pump from the dealer prior to pulling the pump and then find I can get the old one serviceable again with a good clean out, and I agree with your advice that it's not a great idea to have that big hole in the fuel tank wide open while I have a go at repairing the old pump before sourcing a new one.
Any further thoughts regarding the possibility of resurrecting the failed pump would be most welcome...
Cheers from Sydney, Australia; Bill
June 18, 2009
 Followup from the Pelican Staff: The pump failed on my in a parking lot in Las Vegas, so we were pretty much stuck. We barely had the right tools to replace it, although I had just done the head gasket on this car, so I had some extra tools along in case there were problems with that. I would recommend just replacing the pump with a new one, as it's a huge pain in the butt to be stranded anywhere with a broken fuel pump and a full tank of gas! - Wayne at Pelican Parts 
bad5046Comments: I thought my pump went bad but when pulling everything apart and checking the voltage to the pump i got nothing also reads to power on the fuse box. any ideas of the next step to take?? thanks
June 18, 2009
 Followup from the Pelican Staff: Check:
- Continuity of the wires
- The fuse for the pump
- The relay for the pump
- The voltage at the relay for the pump

It's probably in there somewhere... - Wayne at Pelican Parts
 
ScottkComments: I recently had a problem with my 325i where the fuel hose disconnected from the fuel pump and lost all the fuel, I hose clamped the fuel hose back on, refilled fuel and now it wants to start but wont turn over.. can anybody help me? pretty urgent.
June 17, 2009
 Followup from the Pelican Staff: Not sure, maybe the electrical connection got bumped? - Wayne at Pelican Parts 
VicComments: WHat would cause a car to indicate 1/4 tank and computer says 98 miles to empty to run out og gas. Upon getting it to the gas station the car only accepted 12 gallons, indicating that there indeed was 1/4 tank in the car. Could the pick-up have come loose and be raised?
June 11, 2009
 Followup from the Pelican Staff: Hmm, how do you know that the car ran out of gas? It could have been something else that made it stop running? The pickup is way on the bottom of the tank - the level of the fuel in the tank shouldn't affect the pickup or the pump's ability to suck fuel out of the tank. I suspect it was something else? - Wayne at Pelican Parts 
eraidahoComments: I have a 2001 Z3 in need of a new fuel pump. Are you aware of any step-by-step technical articles that would help me with this process? THANKS!
June 1, 2009
 Followup from the Pelican Staff: Hmm, I don't have much experience with the Z3 cars, but I think that the procedure is about the same, just different access to the gas tank. - Wayne at Pelican Parts 
GaryComments: I have had the right passenger, fuel sender diagnosed as going bad in my 1997 540i. I have had bad gauge readings. I asked the dealer if this just needed to be replaced or if something else had to be done to calibrate the sender. He responded that it needed to be "initiated". That sounds like I have to have the dealer do the work since I don't know what is required to initiate the sender. Yes I have two senders, right and left in my car also. I would like to buy an aftermarket sender OEM and have a less espensive shop install it. I am concerned they won't be able to initiate the sender whatever that means. Can you tell me?
May 14, 2009
 Followup from the Pelican Staff: I haven't heard that. I typically don't believe much of what the service managers say. It's well documented that many stretch the truth in order to gain business. - Wayne at Pelican Parts 
JFK Comments: Hi from Oz. Great website and judging by Jim, May 3 2009, current too! I wish Pelican parts were here in Australia : I have an e34 and was wondering if the circular threaded retaining ring shown Figure 4 is exactly the same size in e34 as e36? Mine is impossible to loosen and will need to be cut off. Please advise the part number and do you ship to Australia?
May 11, 2009
 Followup from the Pelican Staff: Hi there. Yes, I believe that this retaining ring is the same. Drop our sales department a line with your VIN # and they can look this up for you: http://www.pelicanparts.com/support/ContactUs.htm- Wayne at Pelican Parts 
jimComments: I just got my new fuel pump and one of the pipe is to big to fit the hose in it and open on the side, is this normal? any body can help
May 3, 2009
 Followup from the Pelican Staff: Make sure that the right hose is going into the correct plug - I can't recall exactly, but I think that the two hoses are different sizes. - Wayne at Pelican Parts 
GustavoComments: Thanks for the information, It really helps.
April 30, 2009
 Followup from the Pelican Staff: Thanks for the follow up. We appreciate it. - Nick at Pelican Parts  
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