Originally Posted by BonnieChickSSEi
Ok, I was fooling around with the temperature control today while driving and put it down to 60degrees and then back up to 90degrees and the heat started blowing out?? Sooo, would this point more toward the control thingy or the actuator?
Probably a cracked gear in the actuator. Sounds familiar to what my car with a bad actuator did. Commanding full cold and then, full heat sometimes
caused the actuator to drive left then right producing heat. Eventually, maybe even the next time you start it up, it will be back with no heat again. Then you try the full cold/full heat trick again, and sometimes it works, sometimes it doesn't.