Engine Mechanical problem
2003 Nissan Altima 4 cyl Two Wheel Drive Automatic 85000 miles
when I turn on my air conditioner the engine seems to shift and it cause the fan belt to vibrate and make a loud noise. It does it more when the car is not moving then when it is. I observed the engine when the air conditioner is turned on and there is a noticeable shift/movement in the engine when the air conditioner is turned on and that is when the vibration and noise begins. Any help would be appreciated.