Having a heater problem
#1
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Join Date: Sep 2006
Location: western Wa.
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Having a heater problem
Heater has hot air when the blower fan is off and im cruisin but seems to blow cold air when i turn the fan on. Any ideas? I did just get back from a road trip and it was cold, the truck was parked for maby four days in an area notorious for packrats, would a rat nest block the heatercore and cause cold air to be blown in? Anyways, any suggestions would be appreciated before i start diggin in to it.
#3
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My heater problem ended up being the thermostat.... the engine temp gauge didnt look too cold... about 25% of the total range.... but the heater didnt work worth a squat... i finally figured out that the thermostat had stuck open. The new thermostat rose the gauge to >50 or60% of the gauge range, and the heater worked great.
i had the same problem... heater was warm when there was little or no air moving accross it,, but got colder when the air flow rate was turned up.
i had the same problem... heater was warm when there was little or no air moving accross it,, but got colder when the air flow rate was turned up.
#4
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Before my trip i flushed the cooling system and put in a new thermostat, everything seemed to be working great. The temp gauge moves around a lot but i hear thats normal operation for these rigs.
#5
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A year ago I had something similar happen to me, drove for 8 hours with no heat, it got a bit chilly, but it ended up being that the heater core was just plugged, works great now.
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