Originally Posted by andrewwynn

Included in the master list. (Trans mount).

Get under the car with it on stands with engine running you can use a good glove so you can grab exhaust parts and feel around to find the source.

In my case it's the cat. Shakes enough i can see it! It vibrates enough to shake the motor and trans.

I learned the hard way there's a good reason the cat is held down so firmly.

The trans bushing absorbs the shake and the steel mount is stable no vibration.

On the 3.0 E53 the vibration damper is exactly where my vibration source is so check if there's any firm mounts to the cat meant to hold it from vibrating and of course try without the vibration damper to see if the modified resonance is incompatible with your idle.


–awr–

Using Tapatalk VIP on iPhone