sprinter 310d noise/vibes

[sprinternut]

My sprinter has started to make a loud metallic rumble/clatter from underneath when the engine is switched off,it also does it on startup but not quite as bad.Noise seems to emanate from gearbox area-any ideas?

 

[GEORGEROV]

There is more physical movement of the engine/transmission when starting up and stopping than when the engine is running normally - especially if the engine mounts are shot!. That would be my first check.