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Heater problem

(1999 Ford Taurus)
in Richwood, OH on January 23, 2011
I have a 1999 taurus, I have no heat. It will get warm when idoling on the vent setting, but when driving have no heat at all. Think maybe heater core but not sure.
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Popular Answer
on January 23, 2011
A quick method to tell if you have coolant flow through the heater core is to feel and compare the temperature of the inlet and outlet heater hoses. A clogged heater core will have only the inlet hot or warm. A stuck open thermostat could also create this concern.
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