trustz

Dear All, I got a 2001 E55 with 105k miles on it, about 2 or 3 week ago, every time when I punch the car with full throttle and then release the gas paddle quickly and then I can hear/feel a loud "clunk" sound from some where under the car ! It happen to start from stop or 60 mph on the free way. but if I slowly release the gas paddle then is OK, the transmission shift normal. I have also try to slowly speed up and then quickly release the gas paddle, it also drive normally.

So it sounds like only the car under the heavily load and then I let the throttle off quickly and I can hear/feel a loud "clunk" sound !

Anyone know whats wrong with my car ?????


Thanks in advance !! Time to get my credit card out !

Neanicu888

Best case scenario : transmission mount
Worst case : I don't know...you probably don't want to know either...
Has transmission service ever been done on your car?

Mantooth

Has to be transmission/engine mounts. Shouldn't be too expensive. check for the parts on parts.com.

trustz

Yes, I just did the transmission servce two month ago !

nizzle

+1 more for trans or motor mounts

desired_speeds

check trans fluid level and trans mount

renault12ts

Check the donuts.

trustz

Are you talking about this:

Strigoi

Yes. Also check the center bearing and support.

John H

Probably and engine mount.

Open the hood. With the e-brake on, start the car. With your left foot on the brake firmly, shift into Drive. Very slowly apply the throttle with your right foot to load the engine. It won't take that much RPM, maybe 1500 to 2000. Have a friend stand on the side of the car by the left fender and watch the engine. If you get a significant amount or engine lift on the left side the engine mount is the culprit.

Be careful doing this and make sure there is no one and nothing in front of the car 'just in case'. If you don't feel comfortable doing this kind of test the by all means don't do it! Seriously, be careful!