ok, bleed the cooling system. do this by removing the radiator cap when the engine is cold, starting the car and letting it run until the cooling fan turns on twice. make sure your temperature selector is at the hottest setting. you can speed this up by reving the car up to 1000-1500 rmps once or twice while you wait for to come on but do not hold it for very long at those speeds. once the fans turn on, you know the thermostat is open and allowing the coolant to move through the system. the coolant level in the radiator should be to the bottom of the neck. if it is, fill the overflow tank and watch the level.

if the fans do not come on, you need to check the electrical. when you turn a/c on, both fans should come on when the car is at operating temp. this will let you know that the fan relays and fans are in working condition. then you should test the fan switch(turns on the fans when the coolant reaches a certain temp) for proper operation. the relay is located in your under hood fuse box and the fan switch is located on the thermostat housing. if you have a digital multimeter and a service manual you can test these using the flow charts in it. let us know how it goes.