Anytime I turn my AC on my car acts up. The idle gets rough, the engine surges, and it is worse when switch to max. It's not everytime I run the AC, but most of the time. Also when I shift into neutral, the rpms hang at 1000, for a good bit of time then settle down. If I stab the throttle it normally will drop to it's normal point. When the AC is off I have no idle issues at all. Any ideas?