1986 BMW 325 Engine Revving In Idle

1986 BMW 325
475,000 MILES • 6 CYL • 2WD • MANUAL
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LLWONDERBOYLL
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  • 1 POST
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.
Aug 20, 2010 at 7:59 PM
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DOCHAGERTY
  • ✓ASE Certified Mechanic
  • 9,606 POSTS
  • ASE Certified Mechanic
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
Aug 21, 2010 at 12:00 AM
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