rattling sound when in drive?

[sam777]

i have a 1997 c180 auto, when you put it into drive but are still stationary it makes a very loud rattling noise it gets worse in reverse, when you start to drive the noise fades away...any ideas??thanks

 

[dog68]

Can you record the noise?

 

[sam777]

i cant upload the recording, can only describe it as a loud rattling noise sounds like it could be a chain or something similar? thanks for any comments!

 

[Nasco12]

I had something similar a while ago. It turned out that a bracket had come away from the exhaust. Solution: remove the bracket. One day I might have it welded back on.

 

[billywhiz]

Cats rattling ?