Hi,

Just bought a used 99 E320 wagon and I'm getting vibration only when the car is on D or on lower gears (but not P, R or N). It gradually improves as the car warms up. I did a search and an SL320 had similar problems and it went away when the motor mounts were replaced. It makes sense since the car has a pronounced thump when I start the car. What do you guys think? Is it that straightforward?

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89 300CE
91 Supercharged Miata
99 E320 Wagon

Bad motor mounts seems like a logical conclusion. How many miles on the car?

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Fred Hoelzle

mounts are generally not too hard to do.

i havent done them on one that new but they prob are similar to the others.

tom w

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[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC]

..I also have a 427 Cobra replica with an aluminum chassis.

The car's got 95K on the odometer and rides like a dream for a station wagon. Power from a torque perspective is better than my W124. I'll go ahead and change them out... thanks for the encouragement, guys. Man, I miss this forum.

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89 300CE
91 Supercharged Miata
99 E320 Wagon

The motor mounts did the trick. The car is smooth when Drive is engaged, and the "thunk" I hear upon starting the engine has also disappeared.

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89 300CE
91 Supercharged Miata
99 E320 Wagon