Dakota Durango Forum banner

Heat only blows on high! Help!

563 Views 8 Replies 9 Participants Last post by  Fxsts12
So a few months ago, my heat started only blowing on high. I did my research and replaced the blower motor resistor. It fixed the problem, about two months later, it happened again, and I replaced it again. After about a week it’s now gone out again? What else could it be besides the resistor?
1 - 1 of 9 Posts
You may want to change the blower motor, after a while the bearing start to drag a bit and the windings take a little more current. If the commutator is worn and the brushes don't make good contact, it will draw more power thru the resistor pack. They should have used a PWM (phase width modulator) instead of resistors.
  • Like
Reactions: 1
1 - 1 of 9 Posts