How to Maintain Your Vehicle

4 Top Facts For Troubleshooting Common Problems With Car Air Conditioning Systems

When a car's air conditioning system fails, car occupants are likely to endure uncomfortable conditions, especially on a hot summer day. On hot days, temperatures inside a car can soar to dangerous levels; as a rsult, a properly working AC not only offers the much-needed comfort but also improves the safety of occupants. Here are the top facts for troubleshooting common problems with car air conditioning systems.

How the AC Works

An air conditioning compressor located in the car bonnet is used to compress a refrigerant. The compressed liquid turns into colourless gas that is then pumped through the car's AC system. As the refrigerant moves, it is compressed through a valve, which causes a reduction in temperature and pressure. Finally, the refrigerant is pumped via an evaporator located in the passenger compartment, where it provides a cool ambient temperature while ridding the car of humidity.

Leaking Refrigerant

If your air conditioner fails to cool your car, then one common cause might be leaking refrigerant. Cars built before 1995 use the R12 type of refrigerant, which was phased out in the following years due to its harmful nature to the environment. The R12 was replaced by the R134a, which is popular in modern vehicles. A refrigerant can leak as a colourless gas, so it's easy to not notice a leak. Therefore, when your AC blows hot air, almost all of its refrigerant has leaked out. Make sure that a technician checks your system for leaking refrigerant. Recharging the system with the correct refrigerant can restore the AC to tiptop shape.

Compressor Problem

An air conditioning compressor can also be the cause of air conditioning problems. When the refrigerant, which is mixed with a lubricant, drops below the recommended level, the compressor can fail to turn on. Therefore, you should check if the compressor is engaging when you turn on the AC. Apart from refrigerant loss, another cause of a faulty compressor is faulty wiring or a blown fuse. The best solution to compressor problems is to take your car to an expert who will diagnose and fix the compressor.

Bad Smells

Another common issue with the car air conditioning system is foul smells. Over time, dirt and debris can clog the system, especially the cabin filters, leading to bad smells. Also, the development of microorganisms such as fungus, bacteria and mould in the AC system can lead to the foul smell that is often reported by some car owners. Thorough cleaning and disinfection of components can solve this issue.

Contact a company that offers auto AC service to learn more.