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1986 BMW 325 Engine Revving In Idle

Tiny
LLWONDERBOYLL
  • MEMBER
  • 1986 BMW 325
  • 6 CYL
  • 2WD
  • MANUAL
  • 475,000 MILES
After the engine has been running in neutral for about 30-45 seconds, the engine revs from about 500 RPMs up to 1000-1250 RPMs over and over again. This also happens in first gear. Iv'e been told that it might be the air idle sensor, but I honestly don't have a clue. Thanks a lot for any help you can offer.
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Friday, August 20th, 2010 AT 7:59 PM

1 Reply

Tiny
DOCHAGERTY
  • MECHANIC
  • 9,601 POSTS
It is usually them idle control valve/idle control unit that causes the issue you have reported, check this link: http://www.realoem.com/bmw/showparts.do?model=1554&mospid=47321&btnr=13_0228&hg=13&fg=15 #13

http://www.realoem.com/bmw/showparts.do?model=1554&mospid=47321&btnr=13_0337&hg=13&fg=15 #7
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Saturday, August 21st, 2010 AT 12:00 AM

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