Expert: Candido Figueroa - 9/18/2009

Question
I called NAPA and explained that my AC and Heater only run on high. They told me to replace the A/C compressor clutch cycling pressure switch. I have the part but have no idea where it goes on the truck?

Answer
Hi Douglas

When you say it only runs on high do you mean your blower speeds only run on high or what.  If your blower speeds only run on high your resistor is bad that is located near the blower motor.  Your cycling switch only controls your compressor. that is located near the accumulator. On the suction side of the system. Let me know what you mean and I'll help you.