oh boy people, drove my 240D 123 tonight, and i started hearing a clunking noise. not quite like a u-joint though. I was just going to change my rear-diff tomorrow, i hope that's not it.

it almost sounds like my lug nuts are loose on one wheel, which i will check. the noise is deffinately in the rear. thing is, it only makes the noise while i'm driving. if i push in the clutch, i don't hear it. put the clutch out, and step on the pedal, and noise returns. clutch in and rev engine, no noise.

it's really bothersome, probably because i'm fearing the worse. tranny or rear end.

any suggestions of where to look, how to test?

i sure appreciate this