Question about 1999 Jeep Grand Cherokee

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Transmission shifts in and out of OD, rpm fluctuates

Last week i washed my engine and transmission at the carwash, with the car running ( dumb move, i know) and now the rpm fluctuates from a normal of 6-800rpm to 2000+ rpm, also, while driving it sometimes will go into and out of OD

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  • Jeep Master
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One of few choices, either park it in sun, with hood up as much as you can for a day or 2, and see if that helps or, start pulling connectors off around transmission, & throttle body area, & spray them & components with contact cleaner where they come together, and add di-electric grease to each when re-attaching. One other would be to get air nozzle & compressor & start blowing all around those connectors, as many as you see, and can reach, and you may get lucky.

Posted on Jul 25, 2009

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  • Expert
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It sounds like you have a gasket leak. It needs to be checked by a mechanic!

Posted on Jul 25, 2009

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Posted on Jan 02, 2017

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