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Troubleshooting your Car’s Air Conditioning

16 November 2015, 15:22

The air conditioning system in your car is a complex system and on occasion, you may face issues with it not working to its optimum.

Here we look at a number of common issues that may arise with your air conditioning system and explain what may be the likely cause of any problem.

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Why does my air conditioning have a weak air-flow?

A weak air-flow may be caused by a number of issues ranging from a minor issue such as a loose hose, to the fan in the evaporator being broken.

Other potential causes may be a build-up of mould or mildew in the evaporator that clogs the vents, or a broken seal somewhere within the system.

Why is my air conditioning is not as cold as it used to be?

Again there are a number of potential reasons why your air conditioning is not as cold as it used to be. Causes can range from a loose hose or a broken seal somewhere within the system, to potentially more serious issues such as the condenser or the evaporator not working to full capacity or the motor in the compressor has burnt out.

Why does my air conditioning start cool but then go warm?

One cause for this could be a problem with the clutch in the compressor, leading to the compressor failing to maintain the correct pressure which results in hot air flowing through the system.

A clogged expansion valve may also be the cause, resulting in a reduced flow of refrigerant into the evaporator.

A more serious cause may be that there is a leak within the air conditioning system. A leak is normally the result of moisture entering the system which, when mixed with refrigerant, causes a corrosive acid that causes damage to components of the system.

How can I test if my air conditioning system has a leak?

Testing for a leak in the air conditioning system is best undertaken by a professional.

Refrigerant contains dyes that appear under a black light so it is easy for an appropriately equipped professional to check if refrigerant is leaking from the air conditioning system.

What causes a leak in the air conditioning system?

The main causes of a leak in your air conditioning is moisture and old-age. As mentioned, when moisture mixes with refrigerant it produces a corrosive acid that can damage the entire air- conditioning system.

Moisture may enter the system through old rubber seals and hoses that, over time, have begun to lose their elasticity.

As you can see, if you do suffer a problem with the air conditioning system in your car, it is not alway a quick fix.

To ensure that your air conditioning system continues to remain trouble-free and work to its best, it’s important to have any issue with it checked out as soon as possible by a professional.

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