1997 Ford Expedition 4.6 with 197,000 miles randomly blows cold air. Then the temp gauge goes all the way up and the radiator overflow blows. I shut the car off relieve the overflow pressure and start the car back up and it is fine. I have replaced the thermostat and the problem continues. There is no pattern. When the temp gauge tops out the car immediately governs the engine speed down as well. Does anyone know the cause?
Monday, December 20th, 2010 AT 5:13 PM