Before checking out the diff, I'd crawl under the Jeep and really check out the driveshaft. Try to move it laterally, and up and down, to check for worn U-joints. ANY movement is suspect. U-joints are cheap (about $20 each) and easy to replace, so there's no point in living with one that you suspect may be loose. Some people replace theirs every 2 to 5 years anyway. Check that first, and then get back to us.

Last edited by BobRowe; 02/13/08 05:34 AM.
1977 CJ-7, fiberglass body, AMC 360 w/ headers, DUI ignition, Edelbrock intake and Holley 4150 carb, TF999, Dana 300, 4.56 gears lockers, York air comp, 4" susp lift, 2" body lift, BFG 35" M-T tires, Megashifter, AGR pump & box, REP8000 winch.