My car shuts down when overheating

NEED MORE INFO. DOES THE COOLING FAN COME ON

You still have a few more things you could check.Are the cooling fans working? Radiator cap, if it isn't sealing the system can't build pressure and will overheat. Your heater core may be blocked or blockage somewhere in the cooling system. You also need to do a cooling system pressure check, and a compression test or leak down test to see if the head gaskets or intake are leaking. A Combustion test, will also let you know if the block or heads are cracked. There is also the a chance that if you have been driving while the engine is hot you have damages the rings or cylinders. After a short time of running the engine will start to seize up.