WHAT CAN CAUSE IT TO IDLE HIGH?

1989 Dodge Van

Tiny

Anonymous

December, 15, 2012 AT 9:39 PM

What can cause it to idle high?

2 Answers

Tiny

Jacobandnickolas

December, 15, 2012 AT 9:46 PM

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

Tiny

caradiodoc

December, 15, 2012 AT 9:48 PM

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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