Engine noise "transmitted" to body - why?
 

Around some certain rpms, a real resonance and vibration occurs in my car. (W124, the one in my signature) I was thinking the engine mounts were shot after 16 years and replaced them. It made a difference, but did not change anything about the noise level. I've double-checked that the exhaust does not touch the body and the heat shields does not touch the exhaust. The noise is not exhaust noise, it's clearly a resonance and noise from the engine.

I can't figure this out other than the rear transmission mount. Any opinions? Right now, the car is as noisy inside while doing highway driving as an 70s econobox.. :P

May be rear subframe and differential bushings

Rear subframe bushings are brand new, so I doubt they are the problem.. :) What about the driveshaft center support?

If your trans mount is as old as the engine mounts, replace it.

Jim

Yeah, I was going to ask if you changed the tranny mount at the same time. You didn't mention that.