I did an exhaustive search and could find this exact problem in the forum (at least searching for 190e stuff). I have a 92 190E 2.6 and the A/C just stopped working, and just blows hot air.

When the car is started, immediately there is a belt squeal, a drop in RPM, then the engine goes back to idle. I tightened the v-belt and now, instead of a drop in RPM, the engine will stall without extra gas when started. The A/C still does nothing. Any ideas?

Thanks,