Heat will not shut OFF. wha???
I neglected to check the heat on my 2001 before I bought it last week. I checked the AIR you can be sure.
So, today I turned on the heat and things got nice and hot. But then, it would not get UNhot. It was HOT.
When I got home I shut down the truck and checked the fuses. There are several which are labeled HVAC or HEAT. All were fine.
So, I tossed the yot in the water and drank a mess of beer. Several hours later I fired up the truck and guess what? The heat was OFF.
What could cause this? The temp selector feels like a rheostat and doesn't seem to be connected to a cable. Does it drive an airflow door of does it drive a water valve?
I am going to pull the factory radio soon and install an aftermarket unit. Is there anything I can check when the radio is OUT and I have access to the back of the heater switches?