Lets try this one more time. HELP!!! Just crawled under the car. Nothing appears to be cracked, broken, or misplaced. The wheels and driveshaft spin smooth and free. Half-shafts slide freely between differential and hubs. The only thing that I can think of is "did this start after I changed fluid in the rearend?". Frankly, I can't recall (cranial moment). I'm assuming I have the limit slip rearend due to that when spinning one side, the other was stationary and the drive shaft turned. Being that, could the fluid be causing the clutches to slip or "chatter"? Would the sound migrate up the driveshaft to the carrier bearing location and resonate thru the chassis? I put Royal Purple 75-140W in the rearend. Could it be causing to much slip? Any help would be greatly appreciated before I start excavating a car needlessly. Thanx.
S. Maykowski, Columbus MS.
My '99 Z3 Alpine White 2.8L Speed Buggy