Question about 1999 Ford Expedition
The truck heat will not get hot anymore. All of the controls are working properly. Meaning that the temperature control lets me know when the motor is hot and ready to turn the heat on. The heater comes on when I turn it on by the switch, but it just blows cold air. The clutch fan was changed. I had the heater coil blew out in case it was plugged up. I had the thermostat and the control panel knob changed and still no heat. Please help, any information will be appreciated. I noticed on other sites that there seems to be a big problem with this issue and no one seems to be able to solve it.
Have you tried replacing the heater core ? If the flushing of the heater core did not work, the heater core may be bad. Very clogged with gunk and residue. did you try to check the valve that opens the hoses to the heater core. This valve can be vacuum, opened by cable or electric. Check to see if the hoses get hot at the firewall. they should be hot.
Posted on Feb 07, 2009
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