Question about 1999 Ford Expedition
Water isn't circulating unless it's running and then it won't circulate to heater core to get heat
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Posted on Jan 02, 2017
SOURCE: 99 expedition heater valve
yes to the first question
and yes it is the blend doors
recommend get another unit for the control or take that control out and see if one of the tubes is broken off the control unit
Posted on Dec 31, 2008
SOURCE: There isnt coolant going through
yes very common you will have to flush it out using a garden hose with good water pressure. disconnect both hoses connect one to the hose and turn the water on keep switching to back flush it until clean water runs out of it. reconnect hoses and it will be fine.
Posted on Nov 15, 2010
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