Question about Ford Vehicle Parts & Accessories
The fuses are ok, replaced the resistor and motor. I may have a vacuum leak but not sure. I have order a new resistor switch.
There is heater core bypass valve connected to the heater hose from the engine to the heater , check the vacuum actuator hose for leaks
( replace that vacuum hose is what i would do ) if you replace that vacuum hose and still getting zero heat output from the heater core .
then the heater core bypass valve is either jammed closed or failed completely
Posted on May 06, 2014
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Posted on Jan 02, 2017
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