Saturday, December 15th, 2012 AT 9:39 PM
ANONYMOUS
- MEMBER
- 1989 DODGE VAN
- 89,000 MILES
What can cause it to idle high?
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What can cause it to idle high?
2 Replies
JACOBANDNICKOLAS
- MECHANIC
- 109,755 POSTS
Check for vacuum leaks and check the idle air control valve (IAC)
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Saturday, December 15th, 2012 AT 9:46 PM
CARADIODOC
- MECHANIC
- 33,873 POSTS
Usually a vacuum leak. Check for loose, broken, or cracked hoses. Try pinching off the large main vacuum hoses. If the idle speed slows down, pinch off or unplug and block the smaller branch hoses until you narrow it down.
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Saturday, December 15th, 2012 AT 9:48 PM
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