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What would make a 4.0L 1989 Jeep Cherokee idle at 2250 RPM?

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Answered 2006-12-16 14:04:22

It could be the IAC module that sits next to the throttle body. It controls your idle and is non-adjustable.Try cleaning toyr throttle body system first, if tht doesn't work it will need to be replaced. Good luck, Mike

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