Rick's Free Auto Repair Advice

Posts Tagged: AC compressor won’t run

AC compressor won’t run

Why doesn’t my car AC compressor run? If the A/C in your car isn’t working, the first step is to see if the compressor runs when the turn on the A/C and the engine. If you discover an AC compressor won’t run situation, follow these diagnostic steps to find out what’s wrong. You’ll need a digital multimeter and a wiring diagram or parts locator to find the high and low pressure switches. The wiring diagram I show here is a generic diagram. It’s similar in most ways to how auto … Read More


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