Heater not working right
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Heater not working right
I have a 1999 Ford expedition xlt 4x4 with the 5.4 triton. I just finished changing my heater core, put everything back together and now my heater only works on high and won't change off defrost. Did I hook something up wrong? Not hook something up? Possibly blow a fuse? I accidentally arced a bare wire from the radio harness from my radio being stolen. Could that possibly have something to do with it? Any advice is appreciated.
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Joined: Jan 2004
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From: St Louis
The "running on HIGH only" means that the blower speed resistor (assuming a manual climate control) is not in the circuit, either due to a failed resistor or a missed connection.
The "defrost only" is due to a loss of vacuum to the HVAC control head as already noted.
Both symptoms are in the FAQs linked to in my signature below.
The "defrost only" is due to a loss of vacuum to the HVAC control head as already noted.
Both symptoms are in the FAQs linked to in my signature below.
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mrsuperman15
1973 - 1979 F-100 & Larger F-Series Trucks
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Apr 5, 2004 06:20 PM
