Question about 1999 Jeep Wrangler

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Tranmission heat... First of all... I recently changed out my old rusty radiator. My '99 Wrangler did not have a transmission or oil cooler coming off of the radiator. 1) Does my Jeep have a transmission cooler on it (stock)? If so where? 2) The reason I ask this is because I've noticed recently that after driving for a while (not too much, but several miles) the entire area above the transmission from arm rest box up to the gear shifter gets really hot. Hot enough that I can't put a drink in the holder because it just melts quickly. Is my transmission over heating or is this normal for my Jeep. Thanks for the helpler Problem

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  • BJ Balentine
    BJ Balentine Jun 23, 2009

    Sorry. I thought I covered everything in my first post.

    It is a manual transmission.



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I'm going to assume you have an automatic transmission? If so, look on the passengers side of the transmission...There should be two steel lines (like fuel lines) coming from the trans, going towards the front of the vehicle. follow either of them and it should lead you to the transmission cooler. (Ordinarily inside the drivers side tank of the radiator) It is possible that someone has disconnected it from the radiator and has used an aftermarket cooler mounted somewhere at the front (usually in front of the a/c condenser. I generally use these as an "add on" to the original system, not as a "stand alone) unless the unit is exceptionally large.

Posted on Jun 22, 2009

  • Richard Scordino Jun 23, 2009

    Ya know.... While writing I kept thinking it might be. OK there is no cooler used on manual transmissions. If any heat is present where you don't want it. Several manufacturers make "heat blankets" which can be installed under your rug or under the floor-pan Originally most used on race cars to keep the drivers shoe from melting (yes...they can). Search around a bit and I'm sure you can find something. Or, you could mount a plate between the transmission and the floor-pan on short stand-offs...this will act as a heat sink and should lower floor temp.
    Most important...Make sure the transmission is full of the correct grade lube...Improper lubrication will generate a lot of heat and will eventually result in premature failure!!!



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