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I have a bmw 2001 740 IL. Lately the car dies when idling, most mornings it will start and die, it will always die when idling. On a hot day, sometimes it will idle roughly but it will not die.
The check engine light came on and I pulled the following codes P0171,p0174,p1159,p1161.

I changed. the OSV when I got smoke at start up, - that is no longer happening
I also replaced the intake gasket.
I have replaced fuel filter.
Changed all the spark plugs. when I got the codes that they were misfiring and it was about time to change them

At this point I am not sure what it is, I am tempted to change the fuel pump, but I need to 100 percent sure what is causing this.

Submitted: 88 days and 15 hours ago.
Category: BMW
Value: $20
Status: CLOSED
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Optional Information

Year: 2001
Make: BMW
Model: 740 IL
Engine: M62 V8

Already Tried:
Changed Spark plugs, OSV, intake gasket. Checked for gasoline visible leak. Changed, fuel filter.

Current engine code is p1159,p1161 p0171,p0174

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