BAD Vibrations. Transmission?

[Austinb86]

I have a 2000 C280 with about 134,000 miles on it. When I come to a stop, the entire car shakes very badly. I believe it is the transmission mounts. Here is why:

1. The vibrations only occur when at a complete stop. Once I accelerate, the vibrations cease. This leads me to believe that it isn't a steering/alignment issue.

2. When at a stop, the vibrations cease if I shift into neutral. Once I shift back into drive, the vibrations resume. This leads me to believe that it is not an engine mount problem.

Thoughts anyone? Has anyone had this problem? Am I wrong? Thanks in advance.

[marvinstockman]

Have you tried checking the mounts?

[liquidusculade]

it sounds to me like it is the engine mounts. mine were worse in drive than park.

it would be smart to go ahead and change out the trans mount when you change out the motor mounts though.

i would also check your flex discs, to see if they are in good condition. these will usually vibrate when moving though if they are badly worn.

[Austinb86]

Thanks. If the engine and trans mounts are bad, are they expensive to replace and is that something that I can do with basic tools? Or will i need to take to it a mechanic?

[Tedd300DT]

a vacuum leak could cause that. I am pretty sure it is a vacuum leak if it happaned all of a sudden.

[liquidusculade]

it could be a vacuum leak. do you hear any hissing under the hood?

i think at 134,000 miles the motor mounts are overdue if they havent been changed.

i just changed mine out myself at 138,000.

there are a few good writeups on here about diy. i had a lift to use when i did mine. you will have to raise the engine to replace the mounts.

[oberoi]

Mounts are relatively easy and agree with earlier post that not a bad idea to do anyway at your miles, although it sounds like something else.

Check for fluid leak marks from the small holes in the mount - also check when reversing (esp up a hill or driveway) - usually evident with a grumbling sound.

Oberoi

[Klasse220]

Hello all you ppl out there, ive got a c220 elegance 97. Everything is perfect except for a jerk in the automatic transmission when the gear changes from 1st to 2nd. also, the accelerator is quite hard aswell. Just wanted to ask that is this normal for all W202 c class cars or is this an exception. Thanks

[britonj]

having same problem, changing all fuel system parts (maf, plugs, coil pack, wiring,) and A sercive will be done friday will let you know if that fixs mine

i dont think its the mounts because it only happens like 30 percent of time, and it will continue on every stop unless i restart the car which what leaves me to believe it is something else....

[Klasse220]

Originally Posted by britonj

having same problem, changing all fuel system parts (maf, plugs, coil pack, wiring,) and A service will be done friday will let you know if that fixs mine

i dont think its the mounts because it only happens like 30 percent of time, and it will continue on every stop unless i restart the car which what leaves me to believe it is something else....

alrite thanks britonj