Heater/ac blower resister

Asked by Mar 06, 2018 at 02:26 PM about the 1998 Ford F-150

Question type: Maintenance & Repair

Ok the heater is all I have working. And this only
works on high. My question is if I replace this
switch will it make my ac blow cold and also give
me high,med,and low option?

5 Answers


The resistor will give you lower speeds.

1 of 1 people found this helpful.

Ok well what do I need to do about the cool air problem if I check hoses for leaks and find none


If you have automatic EATC controls, it could be the panel itself. If you have rotary controls, make sure the cable is connected to the blend door. With gauges attached, you will know if the system is low on refrigerant or not.


Blend door actuator probably not working. It moves the door from heat to cold.


are you blowing warm air because your low on refrigerant? Have a/c system evacuated and recharged,

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