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..

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'95 E36T AMG (124.092)
'98 E200T (210.235)
'00 E430 4Matic (210.283)

May be rear subframe and differential bushings

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Keep us posted especially if your problem is solved
Present cars:
My car: E-class 420CDI, 2008, W211, V8, 180 000km

Wife's one: C-class 220CDI Sport Coupé, Euro, 2002, W203. 345 000km

Son's one: GLK class 220CDI, 2009, W204

Sold E class 260E, W124, 1988 beloved car sold after 489 000 kilometres of reliable services (engine M103, clutch and 5 speed manual gear box all original).

E-class, W210 320CDI, 2000[/B], 225 000km, Sold

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

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'95 E36T AMG (124.092)
'98 E200T (210.235)
'00 E430 4Matic (210.283)

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

Jim

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14 E250 BlueTEC black. 45k miles
95 E320 Cabriolet Emerald green 66k miles
94 E320 Cabriolet Emerald green 152k miles
85 300TD 4 spd man, euro bumpers and lights, 15" Pentas dark blue 274k miles

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

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1998 Lincoln Continental - Sold
Max 1984 300TD 285,000 miles - Sold
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