How to Deal With the 5 Most Common Car AC Problems 

car ac, airconditioning for cars, car aircon

Your car’s air conditioning (AC) unit is crucial to your driving comfort, especially during the hotter months. As such, it pays to know the most common issues your car’s AC may experience so you can address them ASAP. We have listed  some of these AC problems below:

There Isn’t Any Air Blowing From the Vents

Things could cause your car’s air conditioning to not turn on completely. Some of these include:

  • A damaged blower motor. The blower motor is what pushes the air through the vents; if it’s damaged, it won’t be able to spin and do its job.

  • A damaged blower resistor. The blower resistor is what lets you control the amount of air blowing through the vents. While your car’s AC may work with a damaged resistor—though it will be stuck on one speed—it may also not work.

  • A blown fuse. If your car’s AC system has a blown a fuse, the blower motor will not receive the power it needs to run.

  • A blockage in the air intake. Remember: your car’s air conditioning unit doesn’t produce its own air. Instead, it draws in air, cools (or warms) this air accordingly, and then blows this cooled (or warmed) air through the vents. If there’s a blockage in any of the intakes where the air passes through, your car’s AC will not work properly.

Your car’s AC belts and hoses may also have leaks, blockages, or be otherwise damaged if the unit isn’t blowing any air.

The first thing you need to check is the fuse. If it’s busted, buy a new one from a reliable auto parts shop. You can replace the fuse on your own, or bring your car to a mechanic or an AC specialist. For other issues with the AC, you might need to getyour car in for a thorough check.

The Airflow Is Weak

The AC’s cabin filter may be blocked if the air blowing through the vents remains weak even if you’ve cranked up the dial to the highest setting. Check if there’s any build-up of dirt in the filters themselves or if there are any obstructions in the hoses. You may also want to inspect if there are any loose seals or faulty fans.

The Air Isn’t Cold

The AC cools down the air through a refrigerant, so check if you have an ample amount in the tank. You can use an AC gauge and run your AC on the highest setting. After a few minutes, the low port of the gauge should be between 25 and 45 psi, and the high port should be between 250 and 450 psi.

If the pressure readings are at the suggested levels, check if there are leaks in the hoses or any other part of the AC system. This can be tricky to do on your own, so bring your car to the mechanic to conduct proper tests.

The Air Is Stale or Smells Bad

If the air circulating in your car smells musty or foul, there’s usually something stuck inside it; the usual culprit is mould or mildew. To be sure, get your car’s AC system checked and cleaned as soon as possible to prevent the spread of potentially harmful substances and germs.

You may also encounter an oddly sweet chemical smell from the air conditioner vents. This may be caused by a fluid leak, usually from the radiator. However, a strong odour that isn’t the usual “cooled air” smell might mean a build-up of dirt. Again, have the AC system checked and cleaned to eliminate the issue.

The AC Makes Weird Noises When Turned On

Most weird, unexpected noises coming from your car usually indicate of some problem. This is especially true for parts like the air conditioner, which isn’t supposed to make any loud sounds. Thus, if you hear anything other than a soft humming coming from the AC, have it checked immediately.

The issue may be something as minor as some debris being stuck in the unit or loose parts like screws in the filter. However,AC noises can also be something as major as a worn-out bearing or a failed clutch. Watch out for a loud rattling sound or a persistent squealing. A hissing sound, on the other hand, could mean a refrigerant leak.

Your car’s air conditioning system is one of the most frequently used, so it only makes sense that it can suffer from issues more often. Take note of these common car AC problems, so you know how to deal with them. Usually, your best course of action is to visit a mechanic, but there are also plenty of things you can do to check and identify the issue. 

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