Mercedes 300 D class 1987 transmission thumping.
 

Hi ever since I bought my 1987 300d automatic Mercedes it sounds like it clunks into gear. Sometimes it will be a very noticeable clank and sometimes it is more subtle. When I do hear it I can feel it in the back of the car. Has anyone ever experienced this before. Sometimes it sounds so bad that I feel like I am doing something wrong but I accelerate very slowly in the car to prevent it from doing this when it switches from gear to gear. Also I usually only notice it when it switches from 1st to 2nd. I never notice it when it down shifts.
Thanks a ton in advanced for any help you can give me.
Rich

RE: Mercedes 300 D class 1987 transmission thumping.
 

Check drive shaft couplers (rubber) and, diff for play.......

RE: Mercedes 300 D class 1987 transmission thumping.
 

Ok thank you for that advice. My dad told me it might be some kind of vacuum modulator. Would you think this is possible as well?