Symptoms of Bad AC Compressor in Car

Symptoms of Bad AC Compressor in Car

If you’re tired of the feeling of your car’s air conditioning not cooling your ride, this is the blog post for you. In this post, we’ll discuss common symptoms of bad AC compressors in cars. We will discuss the causes and solutions for this problem.

The AC compressor is the heart of the air conditioning system in your car. It’s a belt-driven device that runs off the engine.

If it breaks down, your car can no longer cool you properly, or if it fails completely, you have to get it towed away.

Most of the time you will know when something is wrong with the AC—the air coming out of the vents is warm or hot, and there’s no change even if you run the AC longer. Then you should go car air conditioning servicing.

What happens is that when your AC compressor fails, it causes a lot of stress on the belt. The belt itself rubs against tight metal pulleys and small rollers at a high rate, which makes it wear out quickly.

However, there are situations where your AC compressor seems to be operating normally but is actually failing.

This can be very difficult to diagnose because as it turns out, there are some very subtle symptoms that an automotive technician might miss.

What is AC Compressor in a Car

The compressor is the engine that drives the air conditioner, applying intense pressure to the refrigerant before pumping it into the condenser, where it transforms from a gas to a liquid.

For the air conditioner to run at its best, the compressor must be in perfect working order.

Symptoms of Bad AC Compressor in Car

1. Loud noise coming from the AC compressor:

The AC compressor contains a small fan inside the compressor, which is responsible for pushing out refrigerant gas to the car’s condenser.

When you run your AC, this fan spins fast, but if one of the blades on the fan breaks or comes off, it will make a loud noise.

This is an easy symptom to diagnose and repair, as long as you notice it soon. If it goes undetected for too long and you keep driving your car like this, there’s a chance that the vibrations from that broken blade can damage other parts of your AC compressor.

2. Circuit Breaker Tripping:

The circuit breaker is a safety device that disconnects the power and stops the flow of electricity to your AC compressor when something goes wrong with it.

When your AC compressor is working normally, it requires a lot of power to run, but when it fails and stops working, the circuit breaker will trip because there’s no longer power being drawn from your battery.

So if you notice that the circuit breaker keeps tripping but you’re not having any other problems with your car’s electrical system, there’s a chance that this might be caused by a bad AC compressor. It’s wise to visit a car repair shop.

3. High cabin temperature:

When your AC compressor is not working, you would expect the cabin temperature to go up. The most common symptom of a bad AC compressor is that the air coming out of the vents suddenly feels hot.

However, there are some cases where this might not be the case.

For example, if your car has an aftermarket stereo that’s generating a lot of heat or if you have some electrical components such as an amplifier or under-dash lights that are run by the car battery and generate heat, it can cause your cabin temperature to climb faster than normal.

4. Fluid Leakage:

If your AC compressor is not running, it means that you don’t need any refrigerant gas in your AC system. So an early symptom of a broken AC compressor will be a lot of fluid leakage.

It doesn’t matter what brand of car you have—all cars have several spots where the refrigerant gas travels through to reach the AC condenser unit on your car’s exterior.

If you notice that there is some sort of fluid dripping under your car, chances are it’s the refrigerant gas from your AC system.


I hope after reading this article, you can now identify if your AC compressor is functioning properly or not.

Of course, you have to have an automotive technician to diagnose the problem for serious problems.but at least you will be aware of the symptoms.

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