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Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > 5 Series > E39 (1997 - 2003)

E39 (1997 - 2003)
The BMW 5-Series (E39 chassis) was introduced in the United States as a 1997 model year car and lasted until the 2004 when the E60 chassis was released. The United States saw several variations including the 525i, 528i, 530i and 540i. -- View the E39 Wiki

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  #26  
Old 04-23-2013, 07:35 PM
Bennt771 Bennt771 is offline
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If im not mistaken there is a fuel pressure "nipple" under the engine cover. Cant you test it there? Keeping in mind im new to the BMW thing.
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  #27  
Old 04-23-2013, 08:12 PM
AH673000 AH673000 is offline
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Just went thru this on my sons 528.... His had a nipple on the rail.... Had 18 psi.... Changed fuel filter.... Still 18 psi..... Changed fuel pump ( passenger side under back seat - behind the driver side back seat is the level gage) . All good now.
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  #28  
Old 04-27-2013, 12:01 PM
Gootz4u Gootz4u is offline
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Ok guys Im back at it again. Ok this is what I have done. 1, I exposed the fuel pump, 2, I connected the fuel pump pressure gauge. 3, I jumped the fuel pump relay. and the pump did nothing. It did not show any pressure on the gauge. Did I do the correct thing? I guess I need a new fuel pump.
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  #29  
Old 04-27-2013, 12:04 PM
Gootz4u Gootz4u is offline
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Thank AH673000 Just saw your post. I think I need to get a new fuel pump also. Are they difficult to put on?
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  #30  
Old 04-28-2013, 04:09 AM
HTK12 HTK12 is offline
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You have made some mistake performing the test because, if the fuel pump is turning there should be some pressure. Zero pressure would mean that the fuel pump didn't turn on or was completely dead. Since you got your car running it can't be completely dead. As other have said there should be a valve on the fuel rail to hook up a pressure gauge.
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  #31  
Old 04-28-2013, 05:20 AM
kmorgan_260 kmorgan_260 is offline
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If this problem started after the car wash I am betting the DME got wet. Did you ever take it out and make sure it was dry?
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  #32  
Old 04-28-2013, 07:20 AM
Gootz4u Gootz4u is offline
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Hello HTK12, my was not running. it just cranks but wont turn over. this is the first time I have ever done this test so I was not sure if I was doing it correctly. But I don't think the pump is coming on even when I jump the relay. Then I took the jumper off and put the relay back on and turned the key and still the pump did not come on.
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  #33  
Old 04-28-2013, 07:28 AM
Gootz4u Gootz4u is offline
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Hello kmorgan260 yes I check it out and it was all dry and clean. I checked the fuses for the fuel pump also and they are good. One thing I need to check is the voltage to the pump but I am not sure how to do that test.
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  #34  
Old 04-28-2013, 07:29 AM
HTK12 HTK12 is offline
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Quote:
Originally Posted by Gootz4u View Post
Hello HTK12, my was not running. it just cranks but wont turn over. this is the first time I have ever done this test so I was not sure if I was doing it correctly. But I don't think the pump is coming on even when I jump the relay. Then I took the jumper off and put the relay back on and turned the key and still the pump did not come on.
Well I was referring to that you got it running again after replacing the blown fuses. Are you sure you have jumped the right pins? You'll need proper fuel pressure to get it running right. Do you have power to the relay socket?
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  #35  
Old 04-28-2013, 11:37 AM
Gootz4u Gootz4u is offline
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I think so, do you know what pins?
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  #36  
Old 04-28-2013, 12:08 PM
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540 M-Sport 540 M-Sport is offline
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Make sure the pump is receiving power, use a meter or test light. Just because the pump is not running, does not mean it is bad, it may not be getting 12 volts.
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  #37  
Old 05-04-2013, 12:08 PM
Gootz4u Gootz4u is offline
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Thank You guys, here is an update. I just had a successful test I am getting power to the fuel pump. It is reading 10.something but my car has been parked for awhile but at least I saw that it is getting power. So today, I am replacing the fuel pump. I am looking for DIY on youtube. I already got the new pump. Hope this is it.
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  #38  
Old 05-04-2013, 03:20 PM
AH673000 AH673000 is offline
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So.... You are getting 10 psi off the fuel pump. That is a problem.... Minimum is 45 psig.

Replacing the pump is a bit of a challenge.... You may need to walk a way from it a few times.... But get it aligned properly and you'll get it in.

GL
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  #39  
Old 05-04-2013, 08:34 PM
Gootz4u Gootz4u is offline
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Ok guys, I put the new pump on. Put everything back together and....... DAM CAR STILL NOT WORKING!!! I still get the Engine Fail Safe Prog. I don't know what else to do. Thinking on it, the car now has a new throttle body which was over 400 bucks and a new fuel pump. I checked for codes again and I got three. Here they are.... P0120, P0123, P0223. It has a new throttle body. Can there be a problem between the gas pedal and the throttle body? Currently with the key on the on position, I step on the gas pedal and the throttle body does not respond. What can cause these codes? Currently, not happy with this car.
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  #40  
Old 05-04-2013, 08:48 PM
AH673000 AH673000 is offline
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Ok.... Your old pump was putting out 10psig at the fuel rail . Your new pump is putting out _____ psig at the fuel rail? If you are still below 45psig then maybe your fuel filter is plugged.

Get the pressure next to verify your new pump is putting out the correct pressure .
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  #41  
Old 05-05-2013, 04:19 AM
HTK12 HTK12 is offline
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Quote:
Originally Posted by Gootz4u View Post
Ok guys, I put the new pump on. Put everything back together and....... DAM CAR STILL NOT WORKING!!! I still get the Engine Fail Safe Prog. I don't know what else to do. Thinking on it, the car now has a new throttle body which was over 400 bucks and a new fuel pump. I checked for codes again and I got three. Here they are.... P0120, P0123, P0223. It has a new throttle body. Can there be a problem between the gas pedal and the throttle body? Currently with the key on the on position, I step on the gas pedal and the throttle body does not respond. What can cause these codes? Currently, not happy with this car.
Where did you attach the fuel pressure gauge? Did you check the fuel pressure after replacing the pump?
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  #42  
Old 05-05-2013, 05:10 AM
retiredat44 retiredat44 is offline
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Question

Have you checked all fuses, there are so many fuses on these cars,,, mine has them under hood, glovebox and in trunk..
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  #43  
Old 05-05-2013, 07:21 AM
Gootz4u Gootz4u is offline
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Hello AH673000, I had check the voltage and it read 10.2 or something but it might be because the car has been sitting there for a while. I did check the fuse on the glove box and I have not check the fuses under the seat because everything I have read fuses for fuel pump are in the glove box. What kind of fuses are there under the seat? Today I am going to remove the gas pedal and take a took at that. I don't know why my gas pedal is not communicating to the throttle body and I don't know why the fuel pump is not pumping gas. I am no way a professional just a DIYer but it I guessing its something electrical. a sensor, or fuse.
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  #44  
Old 05-05-2013, 10:15 AM
Round Two Round Two is offline
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I did not see where you did the adaptation routine with the new throttle. I had some throttle response issues and so decided to replace my throttle. Also a 2000 540i. Had my Indy put on the throttle and do the routine, car runs awesome now. Anyway, my Indy said if you replace a throttle and don't "introduce" the new trottle with BMW software the car won't start. You might have something else going on, meaning after a car wash, but the adaptation might be one of your issues. My 2 cents.

Last edited by Round Two; 05-05-2013 at 07:50 PM.
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  #45  
Old 05-05-2013, 02:39 PM
Gootz4u Gootz4u is offline
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wow Round Two, I didn't know that. How do I introduce the throttle body? When I turn the key to the on position, the plate in the throttle body moves and I can hear it but that's all it does. After that, my gas pedal does not move the plate.
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  #46  
Old 05-07-2013, 06:06 PM
Gootz4u Gootz4u is offline
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OK guys, I took off the accelerator pedal to check it out because I read some threads that others had issue with the TPS, but I am not sure what I am checking for. Does anyone know how to test the pedal? Can I buy just the sensor without the entire pedal?
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  #47  
Old 05-08-2013, 04:48 AM
AH673000 AH673000 is offline
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I never saw where you checked the fuel pump pressure at the rail after you replaced the fuel pump.... If it is above 45 psig and your throttle plate is suspected, why don't you reinstall the old TB . That may eliminate the "need to introduce the new TB" .
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  #48  
Old 05-08-2013, 06:27 PM
Gootz4u Gootz4u is offline
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That's a good idea AH67000. The reason I have not checked the fuel pump is because it is not sending gas. I just replaced it and still nothing but I did was thinking it was the accelerator pedal so I started doing the research and found a guy that the same thing happened to his car back in November but he did not say if he fixed it. He also left his number so I texted him and he said it was his DME. Had had replaced a lot of parts like me and it would not work. Now, I am searching for information for a DME. I started reading some threads that talk about used DME but you have to update the software and need new keys. This is the worst experience I have had with this car, but it still rocks. I just got to get it fixed. Can the original DME be repaired?
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