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Unread 10-13-2012, 10:04 AM   #1
pjster8589
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Join Date: Oct 2012
Location: Maplewood, Minnesota
Posts: 2
2002 Liberty Stalling after transmission filter replacement

The transmission on my 2002 Liberty (3.7L) started slipping. It would run fine for a few minutes then start slipping. If I shut it off for a few minutes and turn it back on, it would work for a few minutes then start slipping again.
It was long over due for a fluid and filter change so I started with that. It now works with no slipping. The engine light had gone on and threw the low transmission pressure code which was expected. So I reset that.
The problem now is the jeep will surge slightly at low speeds and stall at a stop. It is apparent that the torque converter isn't disengaging all the time. Sometimes it does and sometimes it doesn't. I would think it was a fault with the torque converter only except for the surging. When at idle in gear you can actually feel the torque converter lock and unlock causing either a stall or almost a stall. The slight surging is at low speeds. It idles fine in neutral or park. Would a faulty TPS or IAC cause the converter to lock at idle speed? Any help would be appreciated.

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Unread 10-13-2012, 09:45 PM   #2
tjkj2002
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2002 KJ Liberty 
 
Join Date: Dec 2009
Location: Colorado
Posts: 8,171
Time for a rebuild.

Once a auto trans starts slipping it's all over and no saving it.New fluid with that bad of slipping,even just 1/3 new fluid,can be enough to dislodge all that clutch material and cause major issues.
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'02 Liberty sitting on 35" tires,HP44,RockJock60,and AtlasII t-case
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Unread 10-13-2012, 10:04 PM   #3
pjster8589
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Join Date: Oct 2012
Location: Maplewood, Minnesota
Posts: 2
Thanks for replying. I was thinking new tranny too but remained hopefull that by some minute chance a filter and fluid change would be all it takes. After all that is what is recommended as the first step. Then also the chance something else would go wrong at the same time to cause the stalling and surging was also very small.
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stalling at stop , torque converter , transmission

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