2008 Camry 2.4 Engine Vibration

I have a 2008 Camry XLE 2.4. I noticed at idle when the AC is running ther is a bad vibration in the engine. It shakes a lot more than it should. The vibration stops when the AC is off. Took it to Toyota and they told me to get the fuel injection cleaned and that would take care of it. I did through them and it did not help. Anyone else having this problem or might know what the problem is??

hello. maybe its too late to respond to your problem, anyway, i want to share some possible causes. what is the rpm of the engine on idling? also, any history of the car before you notice that problem, like if you wash the engine or you remove the battery..... some problem with new model cars with motorized throttle, if the battery was disconnected,
you will notice change in idling. normal idling is 700 to 750 on idling, if its before normal and then, after disconnecting
the battery, become lower.....the problem maybe from the throttle.it only needs cleaning. just remove the hose from the air filter and clean the throttle( inside part) but dont use carburator cleaner or spray, use only a piece of cloth to clean, just wipe the inside part of throttle.i have encounter many problems like this.
another possible cause is spark plugs or the igniters, remove the igniters and spark plugs and check.
possible cause also maybe from the compressor, if the freon is over charged, the compressor become heavy than normal.