Vehicle Air Conditioner Repair

Top Tips to Follow When Repairing Your Vehicle’s Air Conditioner

If you own a vehicle, you must have an idea that over time, the car’s air conditioning system becomes less functional, until the day you turn the knob and it throws hot air through its vents on you. It’s a nightmare in hot summers. Now the question is how to ensure a long and trouble-free operation of your car’s air conditioning system? There are lots of things that can go wrong and can create an unfavourable condition for your car’s ac. We have sorted out a list of tips that can provide help for your vehicle air conditioner repair.

Check the Air Filter

There is an air filter in the inner cabin of your vehicle, which speeds up the flow of air from the air conditioning system under the hood into your car. This filter is located inside the glove compartment, under the dashboard, or somewhere else. If you are unable to find an air filter then open your vehicle’s user manual or search it on the internet. Wherever the filter is, locate it and get it out. You’ll find out the condition of your filter.

If it’s clogged, looks blackish, and full of debris it means it is blocked, and you probably need to replace it. Remember dirt and debris are the main causes of a car’s air filter blockage. Therefore, all carpets, mats in the car must be vacuumed and thoroughly cleaned every week to ensure that the air conditioning and internal ventilation ducts do not attract dust from the outside, and thus remain in a clean condition and provide better cooling.

If your car ac starts working properly after the change of filter, it’s great but if the working of the air conditioner doesn’t improve then move on to the next possible issue.

Open the Hood and Wash

Carefully look at the condenser. You don’t need to remove the condenser to clean it and release the airflow. You just need to find a source of water with some medium to high-pressure flow. Now direct the water from the grill to the radiator and louvres.  These are parts especially important because the main pollutants such as dirt, bugs, and other mud particles build-up and clog. AC condenser that prevents airflow over the cooling coils. Therefore, be sure to wash the condenser well with water every week.  This washing not just helps remove dirt from the inaccessible parts, but it will also help maintain better cooling, bringing comfort during the summer.

Ensure That Fan and Relays Are Working

Today’s cars are generally equipped with electric cooling fans under the hood, so when the air conditioning is turned on, the cooling fan is working. If it does not work, it means that the relay, temperature sensor, controller, or fan motor is not working properly. In most cases, the relay is the cause of the air conditioner turning off. Visible signs of burnt wiring are a sure indication that the relay should be replaced. After replacing the relays turn your car’s air conditioner on again and let it cool the cabin for some time.

Examine the Wiring

If it’s been verified that the correct amount of refrigerant is contained, then the wiring to the AC compressor and any pressure switches should be checked with a voltage meter for confirmation. Check if these components getting the right power they need to function. If there is any trace of low voltage or wiring damage then replace the specific part of the wiring.

Look at the Air Conditioner Belt

Some vehicles have an air conditioning compressor belt. This check is best done with the engine and ignition key turned off. If the belt is present, press the belt with your fingers to see if it has become loose. If the belt is missing, or the belt is loose, replace and install it, and re-check the air conditioner for proper operation.

Check the Compressor

Another very important component of a car’s air conditioning system is the compressor. The compressor is responsible for handling low-temperature refrigerant gas and compressing it into high pressure and high-temperature gas. When the compressor is running, it sends the coolant to the condenser. The compressor should rotate if the belt is rotating.

If the belt does not rotate, it may need to be replaced. If it rotates, the clutch cable or the compressor piston may be broken. Other potential problems could be a fault in the thermostat, low coolant levels, which could cause the compressor to stop running. If you have the right tools and experience to tackle these problems then repair it yourself otherwise contact your automotive company or a professional mechanic to solve this issue.


Some air conditioning problems can be solved with common hand tools and can be fixed at home. With routine maintenance you can avoid these problems, more complex problems may require testing, wiping, and special air conditioning tools – something not all mechanics have. When in doubt, take your car to an experienced mechanic because one wrong move can cause more damage.

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