I have a thumping noise coming from the rear differential of the car as I drive slowly (coasting or stopping). Sounds like it clanks or thumps with each wheel rotation.
Here's the key...when I put the car in Four-Wheel drive, the noise dissapears. I lifted the car - an 88 GL wagon - and had a friend rock the right rear wheel back and forth and the noise seems to come from the front part of the differential.
Thanks for any help.