Running rough when AC is turned on..

camd64 said

if it had been updated to a 134 setup i would say evac. it and put new oil in the compressor and recharge it, but since its probably still r12 that could cost a small fortune.

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It has been updated to 134. New oil and a recharge would make it run smoother ?

I also need to check my belts a little closer.Make sure there tight and in good shape..

Also heard it could be the motor mounts.