The air conditioning compressor pumps in refrigerant gas from the receiver/drier, compresses it, and sends it to the condenser.
Symptoms of Wear or Failure
- Weak cool air from system (or no cold air at all)
- Loud noises when using the AC
Related Repair Advice
- The AC system should be operated at least once a month—even during the winter—to circulate the refrigerant and oil
- Most modern vehicles operate the AC compressor in the defrost mode. Air circulating through the system is naturally dehumidified, which helps in the defrosting process
- Moisture collects and is drained from the heater/AC case, often showing up as a puddle of clear fluid under the vehicle
- An AC compressor may need to be replaced if it's found to be leaking oil and/or refrigerant
- We recommend replacing the AC accumulator or drier when the AC compressor is replaced. The accumulator acts as a moisture and debris filter for the AC system—a new part will keep the repaired system clean.
- Any restrictions in the AC system will need to be identified and repaired or a recurring problem with the AC compressor is likely