Bad engine Vibration and Noise through Cabin

[brickwhite]

So I've had my 318is for about 3.5 months. Picked it up as a project. And the vibration and Noise in the Cabin have been terrible.

I read some posts on what it could be.

Most people pointed to engine mounts....

I looked at what was on my car

Green e28/e24 m30 engine mounts, one missing a nut. Hmmm......

So I ordered some new OE oil filled rubber mounts for the M42

The Vibration got better. but.... not gone, still pretty bad.

So I look under the car more. I see the CAT and exhaust pipe flange are not sealing well. New gasket tighten up some stuff. It's better.
Less Exhaust noise.

But there is still a Bad vibration around the console you can hear in the Cabin.

I looked at the Transmission mounts the looked solid and they were.....

but not OE. They were E21 metal capped rubber mounts.

I replaced with m42 rubber transmission mounts and the Vibration was 99% gone.

I couldn't believe that those tranny mounts could vibrate the car that much.

My Cause


FYI

My advise if you have a whole lot of vibration coming from the engine, check both engine and Transmission mounts first, make sure they are OE. Unless you like vibration and noise.

[kwill22]

Yea the tranny mounts absorb a lot of vibration so when they go you know.