This sounds like a problem with the rear axle assembly. More specifically, it sounds like a bad pinion bearing. Raise the rear of the car, and support it with safety stands. Check for looseness or end play in the yoke that is attached to the driveshaft. If you can move it up and down or in and out, it is a pinion bearing.
Saturday, February 28th, 2009 AT 7:47 PM