6 Signs Your Car’s AC Compressor Is About To Give Out!

Having a working air conditioning system in your car is essential for comfort, especially during the hot summer months. However, like all mechanical components, an AC compressor can eventually fail. Catching early signs of car AC compressor problems can help you avoid being stuck without cold air when you need it most.

In this article, we’ll cover 6 signs your car AC compressor is about to give out. If you keep these warning signs in mind, it can help you address issues promptly so you can stay cool on the road.

6 Warning Signs: Your Car AC Compressor Is About To Break Down!

1. You Hear Strange Noises When the AC Turns On

One of the first signs of a failing car AC compressor is unusual noises when you switch the system on. For example, you may hear screeching, squealing, or clicking sounds coming from under the hood when the AC engages. These types of noises usually indicate an issue with the compressor clutch or AC pulley bearing.

It’s best to have your mechanic inspect the AC system right away if you notice odd sounds, as the problem will likely worsen over time. Catching minor compressor problems early can help avoid the need for a complete and costly compressor replacement down the road.

2. The AC System Has to Work Hard to Produce Cool Air

If your AC seems to strain when trying to generate cold air, it could mean the compressor is wearing out. A healthy compressor should turn on smoothly and create chilled air rather quickly. However, over time, compressor parts can become less efficient at pumping refrigerant through the AC system.

You may notice the AC works well sometimes but not others or cool air only comes out when you first start driving. This intermittent performance indicates failing compressor functionality that should be addressed promptly.

3. The AC System Blows Warm Air

In many cases, a car’s AC initially stops generating cool air well before the compressor completely gives out. This is because worn compressor components lose the ability to create sufficient refrigerant pressure for proper system operation. When this happens, air blowing from your car’s vents remains at ambient temperature, even when the system is turned on.

Lack of refrigerant pressure prevents heat exchange from taking place and means it’s time to inspect or replace the failing compressor. Driving without properly cold air can be quite unpleasant, so it’s best not to delay seeking diagnosis if your AC starts blowing warm.

4. You Notice Oil Leaking from the AC Compressor

There are seals on some types of AC fans that can start to leak after some use. It’s possible to see oil drippings in places near the lines that go to and from the broken compressor seal. Since lubricating oil is used in the compressor, some leakage is normal over the life of the car.

But if you can see oil dripping or pooling, it means the seals are broken too badly for the compressor to work anymore. If you catch an AC compressor leak early, your mechanic can just repair the seals that are damaged if the compressor itself is still working. Ignoring big oil leaks, on the other hand, can cause the engine to burn out completely.

5. The AC System’s Low-Side Pressure is Lower Than Normal

Your car’s AC system relies on carefully balanced refrigerant pressures to generate cool air. To diagnose issues, mechanics check system high and low side pressures using pressure gauges installed on service valve ports.

Typical low-side readings range from 25 to 45 PSI when an AC system is working correctly. If your car AC compressor is wearing out, low-side pressure tends to drop below 25 PSI due to slipping compressor operation.

Continuing to use AC with very low pressure damages the system over time. Noticing decreasing PSI provides an opportunity for early car ac compressor repairs or replacement before permanent damage arises.

6. The AC Compressor Clutch Doesn’t Engage Properly

The electrical system in your car powers an electromagnetic clutch inside the AC fan. When you turn on the air conditioner, the clutch moves the compressor around and makes the refrigerant flow.

But smooth contact can’t happen if the clutch bearings are worn out, the electromagnets are weak, or the clutch plates are warped. If the clutch isn’t working right, you might occasionally feel cold air when the system is trying to turn on, smell burning air from friction, and hear the compressor rattling or grinding.

Because the clutch and compressor work together so closely, these signs show that the compressor is no longer strong enough to be used regularly. If you keep running the system while the clutch isn’t working right, the whole thing could fail.

Tips to Prolong Your Car AC Compressor’s Life

• Have your AC system professionally inspected before the start of each summer to identify potential issues
• Change your car’s cabin air filter regularly to prevent debris buildup that can damage the compressor
• Make sure the drive belt connected to the car AC compressor is in good condition and has the proper tension
• Have any detected leaks in the AC system sealed quickly to prevent refrigerant loss
• Listen for odd noises when turning your AC on so minor issues don’t become major repairs
• Monitor your AC system’s pressures annually to catch dropping levels signaling compressor wear
• Consider installing an AC compressor with upgraded bearings if you live in a hot climate
• Have the AC clutch electromagnets checked if you notice engagement problems
• Replace the AC receiver drier any time the system is opened up for repairs
• Follow recommended intervals for compressor oil changes to maintain lubrication

Conclusion

Early detection of AC fan issues is strongly recommended to avoid being stuck in the heat without working air conditioning system. You can tell that the compressor is about to break down before it’s too late by listening for strange noises, keeping an eye on the air temperature and system pressures, looking for leaks, and watching how the clutch works. If you notice any of these 6 signs that your car AC compressor is about to give out, you should get your compressor checked out right away. Plus, consider using Car Glass Fixer for quick and reliable repairs if you notice any cracks or damages to your car’s glass components.

This will help you figure out the best way to fix the problem, whether that means replacing seals, fixing broken parts, or putting in a whole new car ac compressor. If you take care of your generator quickly, you’ll be less likely to be stuck driving in the heat because your AC system is dead. When you pay attention now, you’re more likely to stay cool for miles to come.