As noted in the title, my 1997 has begun to shake a noticable amount when I turn the ac on. It happens only when the ac on, no other times. The car runs great with 111,000 miles on the odometer. This is the only problem at the moment. I was told to check to see if anything is loose but I doubt it will make the car shake in that manner. The shake is not constant, you can notice some times more then other. I seem to notice it more when the car is at idle, it is not a constant shake. The shakes are quick, only lasting a one second at most. Any ideas on what the problem might be. Thanks for any help.