Question about 2001 Cadillac DeVille

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Will the idel controll valve make the car idel high and make it die when stoped

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Yes its very possible that the IAC valve is bad.Here is something you can try.Take the connector off of the IAC if this remedies the situation then replace the IAC.If the idle is surging then I would look at the throttle position sensor.And also remember that if a sensor was bad you would get a check engine light that should come on.You might also have a vacuum hose that came off.

Posted on Mar 13, 2011

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