How do you fix the heat and ac in a sub legacy 87' wagon?

Asked by Mar 01, 2017 at 07:18 PM about the 1990 Subaru Legacy 4 Dr L AWD Wagon

Question type: Maintenance & Repair

My ac , fan and heater will only work sometimes and I know its not debris in the motor...its something else. run power to it and itll work but only sometiimes...i think its the wiring...its a 87' sub

2 Answers

85,395

Usually it would be the blower motor resistor that is bad.

115,315

I would check all the electrical connections for corrosion. An old, worn out motor can work sometimes and not others due to bad spots on the armature or worn out brushes. You may need a new fan motor.

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