MY TOYOTA COROLLA ENGINE VIBRATE EVERYTIME I

if this is a 4 cylinder engine, when the a/c is kicked on it will vibrate some. if this is a v-6 then it may need to be looked at. do not think that engines will not vibrate. when you turn on the a/c you are in fact applying a load to the engine which drags it down a little. this is the nature.

TAKE the car into the Air con shop and get them to check out the pump as the sound of your problem is the clutch in the compressor is playing up .
But dont pull it off your self unless you have done it before as the R13 is under pressure and you get that in your eyes etc you will be off work for a while. RON