Question about 1996 Jeep Cherokee

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96 GC Orvis-Severe vibration in Idle.

When stopped, in gear, foot on brake: the Jeep vibrates loud. When I put it in park or neutral, or when I'm driving, vibration goes away. It seems to be a engine RPM problem. I've reviewed the fixya 96 GC data, and I'm leaning twoards the IAC motor. Any ideas? Thank you.

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  • whitcomm Mar 16, 2009

    Cleaning the throttle body helped a little. The problem was solved by replacing the motor mounts. The old ones looked good, but when replaced, the vibration dissapeard. Thanks for all your help.

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Before you go changing the idle motor, clean the throttle body out with a spray cleaner and make sure you get into the idle speed motor orifice. Spray the cleaner into the throttle body with the engine off, do'nt be afraid to use it all then let it sit awhile. When you try to start the car it might not want to start, just keep your foot all the way down on the gas pedal and as it starts and clears up just release the pedal slowly. If the car smokes out of the exhaust, thats normal. Hope this works.

Posted on Mar 06, 2009

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