Does anyone know why my idle would become very rough when my Ac is turned on. It seems to go crazy when i switch from vent to Ac. What could cause this any fixes?

 

 

Idler screw is too low.

Backside of the throttle body there is a phillips screw head. Car on, with a short phillips driver turn the idler, if I remember right, clockwise. You should hear the idle slightly increase. If not, go the other way

Test by turning on the AC. If the car still stutters, increase the idler a little more.

 

I have the exact problem. I figure that the AC is putting a load on the engine or on the electrical system which would cause the idle to became rough. I'm leaning towards the electrical system and was thinking of putting in some ground wires to help stabilize the electrical system.

 

yea i just turned the idle up a bit and got tuned, it went away