My heater core doesn't get hot and I have no pressure in the radiator or hoses. I can run my truck for hours then take the cap off and nothing happens. It doesn't overheat at all. I changed the heater core, thermostat, water pump, radiator, hoses, and took off the heater control valve and still no change to my problems. Please help.
Feb 13, 2010 at 10:18 PM