How to Inspect an Air Conditioning Compressor

The air conditioner compressor in a vehicle circulates the refrigerant around the system. The compressor will only kick on when the air conditioner in the car must produce air that is cooler than the interior of the vehicle.

Difficulty: Moderate

Instructions

1. Look at the compressor for any signs of damage. If you see any cracks or areas that look worn, a new compressor may be necessary.

2. Check the hoses and tubes that go into and out of the compressor. If any of these are damaged, it may affect the compressor's performance. Any damaged hoses or tubes should be replaced.

3. Place a tape recorder on the ground next to your vehicle. Press record and leave it there.

4. Check that the air conditioner is turned off and turn on the vehicle. Let it idle for a while, and then turn on the air conditioner. Let it run with the air conditioner on for five minutes before you turn the vehicle off.

5. Rewind the tape and listen to it. You are listening to determine if you can hear the compressor turning on. If you are unable to determine when the compressor kicks on, you should take your vehicle to a professional to have the air conditioning system tested.

Tips & Warnings

• The air conditioner system is pressurized. Don't service the system unless you are trained.
• Don't allow refrigerant to leak into the air. If you see a leak, fix it before using the air conditioner. It is illegal to knowingly allow refrigerant to leak.

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