Automotive Ac System Troubleshooting

Air conditioning ac system operation with txv or orifice tube.

Automotive ac system troubleshooting.

The ac system operation ac system service and the diagnosis of a malfunctioning system. The most likely cause of an automotive air conditioner cooling problem is no refrigerant in the system. And two heat exchangers the evaporator and the condenser. Unfortunately if a leak has been affecting your cold air for a while moisture will most likely have entered your a c system and may have damaged other vital and expensive parts.

If the refrigerant has escaped past a leaky compressor or o ring seal leaked out of a pinhole in the evaporator or condenser or seeped out through a leaky hose the leak needs to be identified and repaired before the system is recharged. Once you are sure that the system can hold a vacuum for an hour you may proceed to filling the system with freon. Air conditioning is now a standard feature in most vehicle manufacturing. If your car ran on freon r 12 from the factory and you have the means to purchases it you can use r 12 or freeze 12 to get maximum performance.

An expansion valve which is a restriction the compressor pumps against. If the system pressures are too high and or too low the expansion device could. The purpose of the system is to remove hot air from the inside of your vehicle. Your car s air conditioning system works just like a refrigerator or your home air conditioning.

The ac orifice tube expansion device filters and regulates the flow of refrigerant through your air conditioning system. When an a c system develops a leak you have what s called an open system if you or your technician discovers the leak early your repair will be less expensive. Any automotive air conditioning system employs four basic parts. To be able to service and repair an ac system read through all three articles.

Air conditioner problems are not cool low refrigerant equals low efficiency while air conditioning troubleshooting uncovers an under performing unit that can be the result of low refrigerant. Contamination is the main cause of failure. A mechanical compressor driven by the vehicle s engine. Depending on your vehicle you may have an orifice tube or an expansion valve.

A faulty automotive air conditioner can be one of the more difficult issues to diagnose and repair. If the refrigerant level is low it usually means it was either undercharged at installation or it has a leak. The purpose of the compressor is to pressurize the air conditioning system and circulate the refrigerant.