Why would a 1995 Mitsubishi Eclipse shake when you turn it off?

Answer 1

The rubber of the motor mounts is worn. You should get this replaced soon (not expensive) as basically your motor is not firmly attached to the chasis of the car. Don�t worry, it won�t fall off, but this shaking cause othe parts of the engine compartment to loosen up.

It shakes when you turn it off as the revs die down. When the revs are higher, the movement of the pistons balance-out the shaking, nevertheless, it is still not good to keep the car in this condition. Fix it, it is just like four rubber parts that need to be replaced. For this to be done the engine needs to be lifted off the engine compartment so it does involve a little bit of labor, don�t expect it to be a 10 minute job.