I would look for vacuum leaks.
Possible bad motor mount
A 1994 Corolla engine may vibrate if the motor mounts need to be replaced. The motor mounts can be purchased at any auto parts store.
a motor
inspect the upper motor mount
i think it is the motor that is in the vibrate in a cell phone
no
no and no
rubber bushings in motor mount worn
Have motor mounts checked.AnswerYeah, it's most likely the motor mounts, I had mine replaced, it was also vibrating when the heat or a/c was on. it could also be the flex tube
bad fan or bad fan relay
Timing chains are designed to last the life of the vehicle. They are normally replaced during a complete engine overhaul.
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