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?
1999 Ford F-150
Keywords:F150
Go here: Engine Cooling System
and scroll down to Poor Heater System Performance
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