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7 Series - E38 (1995 - 2001)

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  #1  
Old 12-19-2010, 07:36 AM
pbstrickland pbstrickland is offline
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Location: Franklin, TN
 
Join Date: Sep 2008
Posts: 38
Mein Auto: 2001 740iA Sport
Code crazy again

I'm running out of options, I got 3 new codes again. P0171, P0174 and P1161. I have done or replaced the following.

1. Plugs and coils
2. Two front OX sensors
3. MAF and foam gasket
4. New gas cap
5. Cleaned the throttle body
6. Left and right valve cover gaskets
7. PVC - and that was fun.

Car has 115K on it.
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  #2  
Old 12-19-2010, 11:49 AM
balance balance is offline
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Location: NC
 
Join Date: Feb 2009
Posts: 762
Mein Auto: 97 740iL
Have you replaced the fuel filter recently? If the motor is not getting enough fuel, this will cause it to run lean. Have you checked/replaced the gasket on the intake manifold or the throttle body? A vaccum leak could also cause the car to run lean.
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