Question about Jeep Cherokee

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96 jeep cherokee 4.0 automatic has very high revs before shifting into next gear. once reaches 45 to 48 mph shifts into high. When you stop and start again it has high revs until reaching high gear each time

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  • Jeep Master
  • 6,982 Answers

The condition you reported is either a control problem or "flaring" both are pressure related. I suggest you have a reliable trans shop test drive it. If it's a control problem (late shifting) there are external adjustments that can be made. If it is flaring, that is internal and may require a rebuild.

Posted on Nov 13, 2009

Testimonial: "Thanks for the help. We still do not know exact problem but are going to try some tranx to hopfully break down any varnish or junk then replace fluid"

  • Richard Scordino Nov 14, 2009

    If the rpms go up before each gear change with steady pressure on the gas (not pushing down any harder, just letting it shift), Then the unit is flaring. Generally that is caused by a fluid bypass inside the unit due to wear or a failed seal. There is no chemical repair for this. You could try adjusting the throttle cable to the transmission but anything further without proper diagnosis by a competent show is likely a waste of time and $. I also suggest that you have the map and throttle position sensor checked, as either can give strange problems with shifting.
    Thanks for the high rating...wish I could help more.
    The only chemical I've ever had any success with is the trans conditioner made by Lucas, but even that has limitations and is not a "cure"!!
    Good Luck!!


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Got a 1997 dodge dakot v6 3.9 4x4 drives great in town but once I get On the highway above 55-75 mph it has a hard time shiftning to 4 gear i need To let off of gas and it will shift into 4th gear, also...


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The car starts right up perfect its just when you start going it shifts from first well, then in second and third gears it revs really high before shifting tothe next gear, it doesnt seem to shift well, it...


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