Originally Posted by
pizzaguy
My guess (and it's a guess) is a broken motor mount. It DOES happen and when it does, you get this odd noise and you can see the shifter move side to side as the car shifts and also when you accelerate hard.
No shift side to side when it is an auto, which I assume it is.
I agree poor wording of the problem.
One mans knock is another mans tap.
Get under the car (safely) and move things around.
Loose wheel?