Jan 052015
 

Heater will not blow warm air, Ac will work. I’ve changed the water pump, thermostat, heat control switch, ensured the vent is switched to heat. both hoses are hot coming off of pump. Truck is running at correct temp. any ideas of what else to try?

  One Response to “1999 Ford F-150”

  1. Go here: Engine Cooling System
    and scroll down to Poor Heater System Performance

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