1988 ford pickup f250 custom 5.8 liter
Humidity and fog build up inside and
defroster works but takes forever to start to
defrost and don't work well fans and vent
are good live in seaside oregon
You could have a leak at the heater core. Does the inside of the cab have a sort of sweet smell? Also is the A/C compressor running when you try to defrost? Defrosters now days use the A/C system to dry the air and defrost the windows.
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