2003 Ford F-150 Repair Question
Topics covered: Heater, Vacuum leak, Floor.
Mileage: No information provided.
Mileage: No information provided.
Asked on June 20, 2010
2003 Ford F150 Heater only blows on defrost
Heater problem
2003 Ford F150 V8 Four Wheel Drive Automatic 230000 miles
Electronic climate control unit. Heater is currently only blowing on defrost. A/C works good on vents, floor and defrost. Heater will NOT blow on floor. I replaced the heater unit once and it worked ok for about 6 months, but then defaulted to the same defroster setting only. Is this a vacuum leak or did the ECU fail again? I now have 2 suspect failed heater units... are these repairable? If it's a vacuum leak, where should I start looking?
2003 Ford F150 V8 Four Wheel Drive Automatic 230000 miles
Electronic climate control unit. Heater is currently only blowing on defrost. A/C works good on vents, floor and defrost. Heater will NOT blow on floor. I replaced the heater unit once and it worked ok for about 6 months, but then defaulted to the same defroster setting only. Is this a vacuum leak or did the ECU fail again? I now have 2 suspect failed heater units... are these repairable? If it's a vacuum leak, where should I start looking?
Asked by F150fxrguyAnswer
Replied on June 21, 2010
I would start with the idea of a vacuum leak. Start by checking under the dash and the hood. That would be my first guess.
