If your part of the country is hot even just a few days out of the year, you already know how important the AC system is when you’re driving. Driving around town in stop-and-go traffic won’t give you enough cooling breeze even with the windows down and a long commute in the heat can leave you sweaty and your clothes stained. Worse still is hot summer rain without functioning AC. In most modern cars the AC system is also employed as a dehumidifier and when it’s broken you can end up with foggy windows that are not only annoying, but also incredibly dangerous when you’re trying to see well enough to drive.
Air conditioning is something many people take for granted… until it stops working. It can be annoying if during a hot day, you reach down to crank up your AC and all that comes out is hot air. More importantly a bad compressor can be dangerous. If your compressor’s bearing goes bad, your engine can seize due to the stuck compressor. If you are traveling at speed and the car shuts off, you no longer have power steering nor is your brake booster functioning. There are a few reasons your AC system might stop working and the central part of it is the AC Compressor. Here are a few ways to diagnose a car AC compressor failure.