rattle

[robbochead]

can anyone please help email me on [email protected]
i have a 1998 E240 and she has developed a small rattle its an atuo box ans sound like its comeing from the box somewhere when the car is idle there is not rattle sometime when i press the break pad ans engage drive the rattle starts but not every time when the car changes from second to third the rattle comes and then goes and when i get to around 70 mph it come back and goes about 75 does this make any sense to anyone is it serious

 

[lxi]

can anyone please help email me on [email protected]
i have a 1998 E240 and she has developed a small rattle its an atuo box ans sound like its comeing from the box somewhere when the car is idle there is not rattle sometime when i press the break pad ans engage drive the rattle starts but not every time when the car changes from second to third the rattle comes and then goes and when i get to around 70 mph it come back and goes about 75 does this make any sense to anyone is it serious

could well be something simple like a heat shield on the exhaust - the engine will vibrate most when you engage gear but hold it on the brake. It's roughly in the same area as the back of the gearbox.

Simple to check - with engine off, get underneath - look for the exhaust - above that you'll see a textured metal plate - that's the heat shield - give a tap / thump with your hand - if your hear the noise, that's it - should be simple & inexpensive to get a garage (not MB, not Kwik Fit!) to reattach

 

[robbochead]

because the noise is only coming now and then i was wandering if it was something like that thanks for you help i will give it a look