Originally Posted by kamil

1983 240D 185,900 miles


I should really start following your guys suggestions on this saying "If it aint broken don't fix it". Well, I love working on my car so I'm constantly upgrading some part or another just for the heck of it. Today I decided to tackle the TRANSMISSION MOUNT. I previously did the engine mounts and yesterday I did the engine shock. How hard can the tranny mount be ?

I took the old one off and just let the transmission hang there along with the shaft. Was I supposed to support them ? Anyway, I installed a new one from the dealer so it was definitely OEM. The job was not hard and only took about 45 minutes. I turn the car on and I hear a noise coming right from underneath the tranny. I get under the car and nothing is moving except the exhaust. I put my ear close to the mount and it sounds like the drive drain is vibrating. Not too familair with drive drains since I've yet to tackle a problem dealing in that department.

I figured that it needs to wear in for a few minutes. I begin to drive it and the best way to describe the sound and vibration coming from underneath is "do you know when you swerve off the road and you hit those little grooves on the side of the highway?" That is the exact sound I hear just not as distinct. I have a feeling it's something with the drive shaft being loose. I came home and turned the car off and went back underneath and touched the drive shaft. It seemed fine except all the play I got in it. I can twist it in both directions about half and inch. Is that normal ?

Please help me out as I am stumped.

I really have to stop messing with the car.