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Old 03-10-2003, 11:11 AM
Posts: n/a
Felt vibration at speeds >= 45 mph

I have a 1984 300D TurboDiesel with recently replaced engine mounts and engine shocks. At approximately 43-45 mph and greater I feel a vibration that creates a beat frequency (low pitch) with the engine. The service shop said that they balanced the tires. After driving about 500 miles, I sense the vibration is associated with tires/wheels, but I am not sure. I can shift to neutral at highway speeds (down hills and such) with ~800 rpm engine idle. The vibration remains distinct. The lead Mercedes technician does not suspect a drive shaft imbalance. How should I proceed to troubleshoot and remedy this problem with the least cost?
Michael Smith
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