I'd appreciate some help trobleshooting my 2001 Expedition 4x2 w/ 5.4L. Nothing really fancy
Well, so it's really my wife's car. But I digress...
It has dual (front/back) AC & heat. Lately, the front vents always blow hot air (once the engine's warm). The rears blow hot or cold OK, so I guess it has a good charge. Or is it two separate systems?
I've seen some notes online about the blender door actuator. When I turn the temp control knob for the front, there's no sound or thumps or anything. Just hot air.
So, shall I tear apart the dash to check the temp control and blender actuator? What/where else to check? Is the link between the temp control and the blender actuator a vacuum line?
Bright ideas are definitely welcome.