Jeepguy819
New member
Hey there, speeds 1 and 2 on heater fan isn't working, BUT speeds 3 and 4 ARE. Anyone have any suggestions ?b]
Yeah dude. Your's sounds like the mode door actuator. That's the motor the controls the door to direct the heat where you want it.dick_wilderness said:Think this is the same reason I get no heat from the floor or dash vents, only the defrost vents work no matter what setting is on.
That probably wouldn't work because the resistors get HOT and the solder might have melted. That is why they are mounted in the path of air from the blower motor -- to help keep them cool. Pushing 30 amps through power resistors makes heat :mrgreen:jay79cj7 said:I guess I could have just soldered it.
The vacuum motor which controls the defrost air flap defaults to "defrost" when there is no vacuum present to it. So no vacuum = all air out the defrost vents. You probably just have a broken vacuum line (check the main line to the HVAC controls from it's source in the engine compartment to the firewall first as that is likely where the problem is).dick_wilderness said:only the defrost vents work no matter what setting is on.