These cars can't work without a thermostat. The thermostat is designed to close one side as the other opens. If you take out thermostat both sides are open and you have bad circulation. Actually, I'm surprised it's not overheating. Wait for your new thermostat, it should take care of the problem.
Another thing to check to make sure everything works normally is the aux fan half speed. Does the half speed ever turn on while the AC is running? If not, bridge the two wires that go to the high temp switch on AC drier. If it turns on now keep the wires bridged until the next AC service and then change the switch. If they still don't turn on check the big resistor next to the AC drier. Might be burned, change it.
[Edited by vinamg on 06-27-2001 at 12:28 AM]