Mechanics

DODGE VAN VACUUM LEAK PROBLEM

1989 Dodge Van • 89,000 miles

What can cause it to idle high?


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Guest
December 15, 2012.



Check for vacuum leaks and check the idle air control valve (IAC)

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.

Caradiodoc
Dec 15, 2012.