First, check the fluid level. Check the reservoir but don't count on that to reflect the true level of coolant. With the engine cool, open the radiator cap and top it off. Close it back up. Make sure there are no leaks. Bleed the system when engine is hot at a bleeder and get the air out of the system.
If the car continues to do this, replace the thermostat located near the engine head where the top radiator hose connects to the engine. This should be where the heater hose connects as well. Install a new thermostat and repeat the coolant level and bleeding process. See what happens.
Tuesday, January 23rd, 2007 AT 2:33 PM