1989 Dodge Van Cause Idle High

1989 DODGE VAN
89,000 MILES
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ANONYMOUS
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  • 1 POST
What can cause it to idle high?
Dec 15, 2012 at 1:39 PM
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JACOBANDNICKOLAS
  • ✓Experienced Mechanic
  • 110,246 POSTS
Check for vacuum leaks and check the idle air control valve (IAC)
Dec 15, 2012 at 1:46 PM
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CARADIODOC
  • ✓Experienced Mechanic
  • 34,403 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.
Dec 15, 2012 at 1:48 PM
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