1984 BMW 318 High idle

Tiny
ABROWN3
  • MEMBER
  • 1984 BMW 318
  • 4 CYL
  • 2WD
  • MANUAL
  • 17,600 MILES
Whenever I am in nuetral, my car idles at about 2,000 rpm. What might be the issue
Wednesday, October 29th, 2008 AT 6:24 AM

1 Reply

Tiny
60'S CHILD
  • MEMBER
  • 4 POSTS
First check to see if the connection to the idle control valve is good. Unplug the valve, if no change, the valve or control unit may be defective. Also if the engine has a lot of back pressure this feeds back into intake and can raise the idle speed. Try pinching the large vacuum line that is connected the the ICV.
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Saturday, January 30th, 2010 AT 11:09 AM

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