Greetings,

Please help with the diagnosis. On a '83 300 cd, 213500 miles.
There is a lot of vibration on the shifter knob at low RPM. As the transmission is shifting through the gears, more vibration is felt at lower RPM's, and less vibration at higher RPM's. I had the car out for highway testing, and at 70 mph it is the worst and at 80 mph range and above there was no vibration at all. I have replaced the motor mounts, transmission mount, both rear axles. Could this be internal transmisson trouble or driveline problems? Thanks for your help.

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'88 300 sold
'83 300cd