I purchased the vehicle with the heater putting out hot air even when the knob was put on the coldest setting. I replaced the switch but it still continues and turning the knob to hotter makes no difference. I noticed two wiring harnesses in the engine compartment attached to the heater near the bottom of the heater are these sensors which control the vents?
I replaced the heat switch the heater still put out hot air constant on 2007 Ford Ranger
by 5th st. kid in Parker, CO on July 10, 2014