Question about 2004 Ford Freestar
The cold line is your return line from the heater core. The core is not circulating, as it should. Is there a water valve anywhere in the heater lines? If so, check that it is open-it should open when a heat setting is chosen. If no valve, the core may be plugged or have an air block. Try cracking open the cold return line to see if you can start flow. If you can't, one must assume the core is plugged, see if you can backflush it with a garden hose-the coolant will need draining to a low level first.
Posted on Jan 13, 2013
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Posted on Jan 02, 2017
SOURCE: Truck heater is stuck ON
There is a blend door motor on top of the housing. If you open the glove box, and look to the top of the housing near the left rear of the glove box, you should see the blend door motor. You can check it at this point. Also check the housing, as I have seen a number of these with a damaged or broken housing.
Posted on Nov 10, 2008
THE CHANGING ARM ON THE DOOR THAT BLOCKS EITHER HOT OR COLD HAS CORRODED AND PROBABLY FALLEN OFF. OURS DID THIS AND WE HAD TO HAVE THE ENTIRE DASHED REMOVED FOR A NEW ONE TO BE INSTALLED.
Posted on May 05, 2009
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