Rumbling at cold start

[Guest tategoi]

Every morning when I start the engine, there is this rumbling sound that follows after the engine has started. Its like some serious vibration, like gear box has come loose. This only happens at cold start. Any of you also experience this? Is this normal? What rumbling sound is that?

[Guest jenvid]

bro, more info pls.

Car type, mileage, age of car,

sounds like some mounts wear & tear or the auto trans hydraulic tensioner... think that's what they call it.

[Guest Cklasse]

There should not be any heavy vibration even at cold start.

[Guest dash]

think its better to drive it down to MBM and get it diagnosed. if not it takes away the overall driving experience of a merc.

dunno if your rumbling is the same i felt in my ride;

i used to have this constant vibrating during cold start in the mornings and it goes away after a while. and by ignoring it, it starts to vibrate again during traffic lights when i depress the brakes while on D.

It was diagnosed to be engine mounting loose and had to be replaced.

at that time the car was 2 years old and had abt 50k milage.

replaced it then and now problem is gone.

cheers

[Guest 9339]

Every morning when I start the engine, there is this rumbling sound that follows after the engine has started. Its like some serious vibration, like gear box has come loose. This only happens at cold start. Any of you also experience this? Is this normal? What rumbling sound is that?

OK, Yours should be a W204, Right ?

This is normal, sound like something in the engine block are lossen, right ?

But this sound will only last for less than 2min, after that, back to normal.I had check with both C&C and MBM, both claim is normal at cold start.

[Guest tategoi]

Yes, its a W204, about a week old only, so unlikely to be wear and tear. The vibration sound lasts only a few seconds, and only at cold start. If I turned off the engine and re-started it like half-an-hour later, there is no such sound anymore.

I was told it got to do with secondary pump. W204 comes with one. You know what is that?

[Guest 9339]

I am not so sure with that but was cfm by both C&C and MBM .

It sound like a old car which times up to scrap......