If the belt stops moving but the engine keeps running, something is locking up. It could be the air conditioning compressor. It could be something else the belt is running.
The air conditioner compressor is not something that can be fixed, except in a shop, there being federal laws about the handling of the refrigerant inside it and the pressure lines attached to it.
If you can take the belt off, see if anything else is hard to turn (besides the engine's crankshaft pully), if not, then the air conditioning compressor is going bad and will need to be replaced/rebuilt.
If you can't afford to replace it, you will need to disconnect the wire running to directly behind it's pulley to keep it from cycling and ruining the belt.
Saturday, June 2nd, 2007 AT 5:31 PM