Car AC Not Working Properly? Here Are 4 Ways To Diagnose It.

In the summer season, we love to drive with our car AC on. It overcomes heat as well as ensures comfortable rides. So, you should check your car A/C regularly when heat waves are passing through your region. Here are some tips which will guide you about the car air conditioning repair and the diagnostic process and for it.

Troubleshooting the A/C compressor

The biggest culprit in an A/C compressor is the clutch. For a faulty A/C compressor, you need to remove the clutch at first. Then, you should set the maximum settings for the A/C and fans.

  • You should check whether the clutch is engaging. And to see if the compressor is receiving voltage, you may use a voltmeter. If there is voltage coming, then there may be some faults in the clutch.
  • If there is no voltage, there may not be sufficient refrigerant that can engage the low-pressure cut-off switch. This switch cycles the compressor. Insufficient refrigerant indicates the possibility of leakage.
  • So, in such a case, you need to use any leak detector kit. For a tight and secured fit, you also need to check other parts of the compressor too. These include the front seal of the compressor, all system fittings, hose manifolds on the compressor, Schrader valves, O-rings that are attached to compressor pressure switches and system hose crimps.
  • While replacing the compressor, you should always keep in mind that, you should also replace the accumulator, expansion device and/or receiver dryer. To get the optimal performance, you will also need a full flush of the system. A replacement of the condenser can eliminate all the debris from the A/C system.

Finding problems with the condenser

Apart from the compressor, you should also check whether there is any leak in the condenser or evaporator. The condenser plays an important role in keeping the air inside the car cooled. It takes all the humidity from the air as you drive and depressurizes cools and liquefies the air. It re-cools the hot air that has been compressed.

If there is any blockage in the condenser by some kind of debris from the road, it will never be able to operate properly. The refrigerant will not get cooled and your car will run with the overheated refrigerant. And what you will experience is hot air coming out of A/C. Exactly what you don’t expect, right? In most vehicles, the condensers are placed in the front part of the car which will enable you to see it visually and remove it from the grill. Problems associated with the condenser can be more complex, in case it gets broken. This happens when a puncture is caused by road debris going through the grill of the car. The only solution to a broken or punctured compressor is to get it replaced.

A/C recharging

You can recharge your car’s air conditioner in two ways. Either you can use a top-off process with refrigerant or you can evacuate the whole system and then recharge or refill it. Each process can be effective as per your car’s condition. But, it should be kept in mind that, the fixes will be temporary if any A/C leakage still exists. If you use an older vehicle, you will experience leaking of Freon, which is an expensive one and is now banned from manufacturing in several countries because of its harmful effects on the ozone layer.

The top-off process is usually cheaper, faster and simpler, relative to the evacuation and recharge process. Impurities can stay in the refrigerant unless you remove any remaining refrigerant and purify the whole refrigerant using equipment recycle, recharging it into the vehicle and topping off whenever necessary. In the process of topping off, you can measure the optimal amount. But, you cannot know the exact amount of refrigerant currently available in the vehicle. For newer cars, if the A/C system gets overcharged, the system can get shut down in hot weather.

How can you find a refrigerant leak?

According to the standards set by certain organizations, if the amount of refrigerant is less than a standardized amount, you need to add more refrigerant to run your car. To detect a leak, you should use leak detectors that are certified by government bodies. Most of the problem occurs in case of pin-point leaks as they are extremely difficult to detect, even using the best equipment. The leakage process is slow for these tiny leaks, but in reality, the A/C seems to lose all its abilities at once. You do not need to remove and purify the refrigerant before recharging the AC.

In the end

You’re based in Perth? Well, then you can get some best auto care services. In a hot climate, you will want your car A/C to provide the best possible service, and for that, you can get a good number of qualified car air conditioning specialists at your doorstep.