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Sep 8, 2023

Is your car AC not working properly? If your air-con ever malfunctions, you’ll usually need a technician at your local used car dealer to identify and repair the problem at once. After all, it can be difficult to enjoy driving during the hot months of summer without a nice cool cabin. Here are a few of the more common causes of a faulty AC system.

Malfunctioning Compressor

The compressor is the workhorse of any auto AC system. The compressor receives cool, low-pressure liquid refrigerant and compresses it into a hot, high-pressure gas. It then propels this gas along to the condenser. Compressors can sometimes suffer faults when left unused for long periods over winter.

Blocked or Broken Condenser

As the hot gaseous refrigerant arrives from the compressor, the condenser turns it into a pressurized liquid and sends it along toward the evaporator. Condensers can sometimes become blocked by contaminants or damaged by external debris. As the condenser is usually situated at the front of the engine compartment, you can often raise your hood and visually inspect it for outward signs of damage.

Evaporator Problems

When refrigerant arrives at the evaporator, it’s turned from liquid form into gas, absorbing heat as it does so. This process chills the walls of the evaporator, creating cold air which is blown into your car’s cabin.

Rather like the radiators in an engine’s cooling system, evaporators have fins that can become clogged by debris flying in from the air vents. Evaporators can also sometimes corrode, or one of the seams or welds can fail.

Cracked or Faulty Cooling Fans

The cooling fans blast the cold air into the cabin and also draw air in from outside the car. If a cooling fan becomes cracked or blocked by something flying into the air vent, the rest of your AC may continue to function, but you won’t be receiving cold air inside the cabin. Cooling fans can also sometimes experience electrical faults.

Leaking Refrigerant

One of the most common causes of car air-con issues is leaking refrigerant. It’s possible for refrigerant to leak at many points around the rather complex AC system. Usually, a leak will be found at a hose connection.

Refrigerant is a transparent, oily substance that’s often difficult to spot. When you take your car in for repairs, the technician may use a special refrigerant dye that makes any leaks easy to see under ultraviolet light. They’ll then properly seal the leak before topping up the refrigerant and testing the system.

Have your malfunctioning air conditioner repaired today at Duncan Suzuki. Our full-service dealership has been servicing the Pulaski area for years high quality customer care and an excellent range of new and used vehicles.