Question about 1998 Jeep Cherokee

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Excessive idle speed

Good afternoon, Lou here in Miami, Florida. I have a '98 Jeep Cherokee/Sport 4X4, in line 6. I just had the head replaced, but now experiencing excessice idle when I start it. It automatically goes to red-line. I've repalced all the sensors, made sure all bolts have been tightened, hoses have no cracks or brakes. Please advise..

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  • yadayada
    yadayada May 11, 2010

    Have you checked for any engine vacuum leaks with a can of carb spray?

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The problem may also be the automatic choke. It could be stuck in fast idle. check all choke settings and linkages clean if nessesary. There is a separate fast idle adjustment screw on the choke linkage that controls engine speed while the engine is warming up. The tip of the screw rests against a cam that slowly rotates as the choke opens during engine warm up. Turn this screw counterclockwise to decrease the fast idle speed.

Posted on Nov 06, 2008

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Good Luck, hope my experience helps you!

-Been there!

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