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95 740I rough idle & Check engine (archive)
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Posted by Brian eckel on January 13, 2002 at 20:18:20:

Hey guys,

I need some help! My 95 740il recently began idling very rough after driving up a steep grade and the check engine light came on. I recently had a leak down done and the car passed with flying colors. (less than 9% per cylinder) The car has 80K miles. Is it likely that the PCV valve has gone bad. It also makes a loud whistling sound somewhere around the back of the motor.

thanks!
Brian


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