1997 Toyota Camry motor mounts

Engine Mechanical problem
1997 Toyota Camry 4 cyl Two Wheel Drive Automatic

I had the crankshaft replaced and the engine works fine now, however the car vibrates at all speeds it did not do this before the mechanic says it is the motor mounts that the car is 14 years old and when he took the engine out it took the weight off of the mounts and because they are old when he reinstalled the engine it nows vibrates