I've got a '98 Jetta 2.0 5 speed, and the A/C works great. However, the other day driving home from work, the light turned red and I came to a stop. When I went to go again the car had stalled. When I fired it back up it idled rough, i pulled over, popped the hood and couldnt find any missing vaccume lines, everything was fine. I turned the A/C off and the car idles fine.

So whats messing up the idle when the A/C is on? It's fine when the RPM's are up but as soon as im off the gas and the cars idling, it wants to stall.

Thanks