Motor Mounts
 

What is the best way to tell if you have a motor mount loose.

rev and watch. if it moves a lot then you've got your answer. stock mounts don't allow for very excessive movements.

another way is to set the ebrake, stick it in first and slowly try to move the car forward by feathering the clutch. look how far the motor bucks... it shouldn't be much at all.

I have an automatic. I just curious if this could be the problem for the shakin that Im feeling. I feel it most when my car hits over drive. My shop cant find anything wrong with the suspension.

Check the ujoints on your drive shaft if this happens when you get to certain MPH.

open the hood grab the engine and if you can pull it out then they are loose

nah just rev it and if it moves more than normal then they are

LOL. Good one