[W126 Coupe] Vibration on acceleration and tranny servicing

[Dick Spellman]

One other thought.  Take a look at your engine mounts especially the
passenger mount.  If you see the heat shield right down there near the frame
it's time to replace them.  Other tell tale signs are close proximity of the
exhaust to frame and the radiator shroud with the clips setting low on the
frame.  All are signs the engine is riding lower and this would be the
collapsing of the mounts with age and mileage.  Passenger side shows the
first signs of wear typically. When you accelerate you are putting a lot of
pressure on the passenger mount from the natural rocking of the engine and
direction of rotation of the crankshaft.  Have a warm body sit in the car
and rev'r up a bit and watch the action on the engine mounts.  You could
probably replicate the vibration by standing to the passenger side and
having the warm body with 'firm brake' apply gas while in drive.

Worn engine mounts will transmit vibration throughout the car when
accelerating.

Dick