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Go Back > Models > Jeep Grand Cherokee & Commander Forums > ZJ Grand Cherokee Forum > Auto Transmission

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Unread 07-01-2003, 12:07 PM   #1
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Join Date: Jul 2003
Location: Midlothian, VA
Posts: 1
Auto Transmission

I am helping a friend of mine w/ his 94 Grand Cheroke. The car has been sitting for a while. From what he says, the car was in a shop, and the shop tried to clean a sticking Transmission valve, but didn't do a good job, or the Valve neds replaced. So he has no first gear, and sometimes looses overdrive. I drive a Nissan 240sx w/ a 5 speed, so this is new territory for me. Where is this valve? He mentioned something about a pump too. Is this in the transmission, on the outside, what? I just figured the Jeep gurus could help me on this one. Thanks.

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Unread 07-03-2003, 10:11 AM   #2
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Join Date: Dec 2002
Location: Kenmore, WA
Posts: 290
Auto transmission can be quite tricky to work on. Personally I'd take it to a reputable transmission shop to have them look it over. About the only thing the lay person can do on an auto trans is change the fluid & filter, and adjust the bands. The bands are what is used to switch gears. If they aren't working correctly, then a gear may feel like it's "slipping" or you may lose a gear entirely. You'll need to refer to a shop manual to find out how to adjust the bands.

The pump on all auto transmissions is built into the torque converter. If the vehicle is drivable at all, then the pump is working fine. If it wasn't then there would be no fluid circulating throughout the transmission, and you'd go nowhere.
1993 ZJ Limited 5.2 - no mods - Red with Gold (what were they thinking) trim.
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