I own a 83 300sd at idle the car shacks alot. The car has 180,000 on it. When I give the car a little throttle the shacking stops. it does it every time it is at idle. it is alittle better when the car is first started. someone help.

It was the rack damper on my 85. Many threads on this topic. Review ALDA adjustment while you're at it.

i fits rough then it could be something to do with fuel or air.
if its just like a wobble then it could be motor mounts and motor shocks, but other then that its just the nature of the beast....

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82' 300SD