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7 Series - E38 (1995 - 2001)

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  #1  
Old 02-13-2013, 12:37 PM
Amirof Amirof is offline
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Location: Ca
 
Join Date: Feb 2013
Posts: 10
Mein Auto: BMW 740IL
Question 2000 7 series fuel trim problem

Hi everyone;
I have a 2000 740IL and getting obd code of (fuel trim adaptation high on bank 1 and 2).
Has anybody had this problem before that can help me?
Thanks
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  #2  
Old 02-15-2013, 09:41 PM
BMW 3-SERIES BMW 3-SERIES is offline
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Location: Arizona
 
Join Date: Jun 2007
Posts: 422
Mein Auto: 2000 540i Sport (E39)
You have a vacuum leak most likely. Or your one of your O2 sensors could be bad. Start by grabbing some throttle body cleaner and spraying around the manifold, listen for idle changes. Its usually the manifold gaskets. When replacing, replace ALL of them, front, back, bottom, CCV or OSV (OEM ONLY!), and one of the most ignored vacuum leaks are the fuel injector o-rings. Its a HUGE importance that the intake manifold be torqued down in an X-pattern, making sure the same pressure is placed on the gaskets so the are seated right. Also make sure the gaskets are sitting on a shinny clean surface, use brake cleaner, than use some very smooth sand paper and get the runners where the manifold gaskets sit, cleaned.
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  #3  
Old 02-17-2013, 11:19 AM
Amirof Amirof is offline
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Mein Auto: BMW 740IL
Thanks BMW 3-series
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