2002-2011 Car AC Compressor 12843774 13147264 For Fiat Croma For Cadillac BLS For Opel WXFT025

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The role of compressor

The compressor is an essential component of the air conditioning system in a vehicle. Its primary function is to circulate and compress the refrigerant gas, which is responsible for cooling and dehumidifying the air in the cabin.

The process starts with the compressor drawing in low-pressure refrigerant gas from the evaporator and then compressing it into a high-pressure, high-temperature gas. This compressed gas is then sent to the condenser, where it releases heat and transforms into a high-pressure liquid. After leaving the condenser, the pressurized liquid refrigerant flows through the receiver drier or accumulator, which removes any moisture or debris from the refrigerant.

From there, the refrigerant passes through the expansion valve or orifice tube, which regulates the flow of the refrigerant into the evaporator. Inside the evaporator, the high-pressure liquid refrigerant rapidly expands and evaporates, absorbing heat from the air passing over the evaporator's fins. This cools the air and reduces its humidity. The cooled air is then blown into the cabin through the vents, providing a comfortable and refreshing environment for passengers.

Overall, the compressor plays a crucial role in the refrigeration cycle of the air conditioning system, ensuring that the refrigerant is properly circulated, pressurized, and transformed to achieve effective cooling inside the vehicle.

Vehicle AC Compressor Problems vs. Low AC Refrigerant

Poor AC performance can often be traced back to either compressor failure or low AC refrigerant. Unfortunately, these vehicle components work hand-in-hand, making it hard to distinguish which is causing your AC troubles. So how can you tell if it is a compressor problem? There are a few subtle symptoms to look out for:

Freon Levels: If your AC system has optimal freon (refrigerant) levels (not too much or too little), but your air conditioner still does not work properly, this is often the sign of AC compressor failure.

Inconsistent AC Performance: Refrigerant leaks will only continue to get worse as the problem continues. On the other hand, a failing AC compressor might work well one day and poorly the next. While it is not applicable for all AC troubles, this symptom is an easy way to distinguish between low refrigerant and compressor problems.

Sudden AC Performance Drops: Refrigerant tends to leak gradually over time, while AC compressors can stop working on a dime. While even small refrigerant leaks can cause large AC problems, sudden drops tend to indicate compressor failure.

If you are still unsure of the source of your AC problems, it might be time to bring your vehicle to a mechanic for professional insight. .