Okay I have two problems with my 1993 mazda 626. First when I am driving and stop the car will act like its going to stall, it shakes alot, and sometimes does stall. Sometimes it doesen't want to restart. The second problem is the air conditioner, it blows warm air it's not cold, it does blow air so I need help with that too. Any help would be greatly appricieated from this confused girl. Thanks, Audrey

Oddly, my sister's name is Audrey, and she had almost the exact problem with her car (Minus the AC problem, hers works like a dream!)
For the AC, depending on what state you're in, you can go to Nappa or something similar and buy what's called a recharge kit. However, due to environmental issues, some states require these to be installed by professionals. in which case you'd have to take it to a shop. might cost you around $50 max.

The other problem had something to do with an air hose, or something to that effect. I'll have to ask my dad how he fixed it. But as I remember, it would have cost around $900 to fix in a shop (including FINDING the problem). but it was pretty cheap when he did it.

One of theguys here can probably offer you more help then I on the main problem. but the AC problem shouldn't be hard, or expensive to fix.

for the stalling concern, there is an air-bleed screw on the throttle body that you can turn counterclockwise to bring engine rpms up slightly. this will also cause a slight air hissing noise to happen, that lets you know you did it right ;). dont touch the mechanical throttle adjustment screw, to do so may cause that nasty check engine light to come on. hopefully this should get you out of having to get an iac valve