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  1. #1
    Join Date
    Jan 2014
    Olean, NY

    Default '88 Cherokee 'Pioneer' Trans.

    Hi All, newbie here. Just picked up another one. '88 Cherokee 'Pioneer' I-6, A/T, with Meyers sno-plow. Bought it 'not running' very rusty. Did I say it was rusty? My buddie says, the only thing holding the seats in, is the carpet... Anyway, I bought it for a possible low budget, off road plow truck. The first thing on my list is to see if the engine runs. I had to spring for a reman starter, but after pulling the plugs, spraying 'PB Blaster' into the cylinders, rolling over for a couple 30 sec. spells... I cleaned & reinstalled the plugs, and vrrooom, she started right up with loud exhaust, trans. & brake lines spewing fluids. The good news is, it seemed to go right into forward & reverse. I've got plenty of work patching up lines and sheet metal. The tranny looks like GM, (rectangular pan), and I assume the engine is a 4.0L. Was this made before the Mopar buy out? I wonder if the oil filter is AMC or Mopar...??? Thanks for any help.

  2. #2
    Join Date
    Nov 2013
    Tucson AZ

    Default Re: '88 Cherokee 'Pioneer' Trans.

    Look on the passengers side front corner of the trans pan for a metal tube that comes out and shoots straight up; that is the dipstick tube of the AX15 (?) Jeep auto trans. They have hard lines running to the trans cooler that are coupled at the front (right below the harmonic balancer) with soft lines that are notorious for leaking. PS...There are numerous posts on this site that show what the 4.0l 6 looks like so you can start identifying things quickly, and lots of super-knowledgable peeps that can help with the more subtle details such as operating system, setup, etc .Good luck!
    Last edited by jimmixj; 01-18-2014 at 08:01 AM.
    If it ain't broke, don't fix it. If it's fixed, go break it!

  3. #3
    Join Date
    Sep 2009
    Chico, CA

    Default Re: '88 Cherokee 'Pioneer' Trans.

    I'm not sure there is a GM tranny that would fit without adaptors at both ends. This is an AW4 pan in basic black, which is why it was off
    230 hp 4.3L Chevy
    Built 4L60E with manual lockout
    Atlas 4 speed
    Griffin radiator
    On board air
    Warn 9.5ti on custom bumper
    7.5" RE front and bastard pack rear on custom long arms
    30 gal gas tank
    And a bunch of other stuff

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