The first thing I would do is to check the axle housing to see if you have a Traklok Diff. There will be a tag that will let you know. If it is I would suggest you change out the Diff fluid with 75W140 synthetic gear lube and the four ounces of friction modifier that you can get at the Jeep store. It could be that your fluid has gotten old and needs replenishing to allow the clutches to do their job properly.
You will also want to check the rear U-Joints to make sure that they are OK.
These are two easy fixes that will not cost a lot.
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Jim
2003 Liberty Renegade
Leather Electric Seats
Self-Dimming Mirrors
Sun Roof
MOPAR Rock Rails, Skids, Rear Hitch
EMU Heavy Duty shocks and Springs 2.5" lift
Front Tow Bar (for RV)
Firestone 255 70 16 Destination AT Tires
Straps and Chains
