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7 Series - E65 / E66 (2002 - 2008)
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  #1  
Old 07-13-2012, 07:36 PM
songjh4 songjh4 is offline
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Location: Phila
 
Join Date: Jul 2012
Posts: 7
Mein Auto: 04 BMW 760Li
Engine idle, stall and turn off. Help my 04 760Li

Recently, I got my bimmer 04 760Li.
There is a problem during the initial engine warmup cycle. When I push the start button, start motor spining but it takes about 5-7 seconds. At idle, it will sometimes start to fluctuate for a brief period during warmup or it may stall. It will sometimes stall when comming to a stop. RPM is up and down as from 200-700. When I stop at the signal, sometimes the engines is stall and engine is turned off and goto Neutal gear.
If engine is warmed up enough, I can not see this problem.
The former owner said he went to dealer shop however they could not find the problem.


Anybody know the clue??

And how much for the oil change fee at the dealer shop?

Last edited by songjh4; 07-13-2012 at 07:38 PM.
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  #2  
Old 07-14-2012, 09:04 AM
SFbay SFbay is offline
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Location: SF
 
Join Date: Mar 2012
Posts: 893
Mein Auto: BMW 745i
Try to diagnose it first
But it sounds like fuel pressure issues
Especially you have direct injection
High pressure pump
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  #3  
Old 07-14-2012, 09:33 AM
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super928 super928 is offline
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Location: Tampa Fl
 
Join Date: Jan 2010
Posts: 184
Mein Auto: 745li
It does sound like a fuel pressure issue. I would start by replacing the fuel filter. I think the 760 has two fuel pumps and they're pretty exspensive.
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  #4  
Old 02-12-2013, 10:24 AM
mws mws is offline
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Location: San Martin, california
 
Join Date: Apr 2010
Posts: 553
Mein Auto: 760Li, F250 V10, Ex 7.3L
I have the same issue

Quote:
Originally Posted by songjh4 View Post
Recently, I got my bimmer 04 760Li.
There is a problem during the initial engine warmup cycle. When I push the start button, start motor spining but it takes about 5-7 seconds. At idle, it will sometimes start to fluctuate for a brief period during warmup or it may stall. It will sometimes stall when comming to a stop. RPM is up and down as from 200-700. When I stop at the signal, sometimes the engines is stall and engine is turned off and goto Neutal gear.
If engine is warmed up enough, I can not see this problem.
The former owner said he went to dealer shop however they could not find the problem.


Anybody know the clue??

And how much for the oil change fee at the dealer shop?
DId you ever get this fixed? what was it?
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  #5  
Old 02-12-2013, 10:48 AM
rsbolin@me.com rsbolin@me.com is offline
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Location: Greenville, SC
 
Join Date: Jul 2011
Posts: 62
Mein Auto: 2004 760i
Start with the fuel filters in the front of the car. There is one on each side. Work your way backwards to the gas tank. This car has a fuel pump with regulator at the tank. IT also has two high pressure fuel pumps at the front, HPFP on bank 1, and HPFP on bank 2.

Hopefully it will not be the HPFP's. Those are $2,500 each and 10 hours labor.
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  #6  
Old 02-12-2013, 11:33 AM
Ultimate745i Ultimate745i is offline
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Location: Jacksonville, Florida
 
Join Date: Jan 2013
Posts: 509
Mein Auto: 2004 745i
Quote:
Originally Posted by rsbolin@me.com View Post

Hopefully it will not be the HPFP's. Those are $2,500 each and 10 hours labor.
Daaaaaaaaaaaaamnnn! Are you serious?!!
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  #7  
Old 02-12-2013, 01:07 PM
mws mws is offline
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Location: San Martin, california
 
Join Date: Apr 2010
Posts: 553
Mein Auto: 760Li, F250 V10, Ex 7.3L
2 fuel filters in front?

Quote:
Originally Posted by rsbolin@me.com View Post
Start with the fuel filters in the front of the car. There is one on each side. Work your way backwards to the gas tank. This car has a fuel pump with regulator at the tank. IT also has two high pressure fuel pumps at the front, HPFP on bank 1, and HPFP on bank 2.

Hopefully it will not be the HPFP's. Those are $2,500 each and 10 hours labor.
Looking thru realoem.com I never identified 2 filters "in front", unless you mean the two that are behind the front tire under the car?

The fuel pressure regulator is actually in one of the two filters under the car in the filter itself. In my case, I replaced the FPR fuel filter and the actual in-tank pump--myself. Still have cranking issues.


_MWS
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