It is low on freon.
central airconditioner makes a clicking noise when running? any idea what to check?
Loud noise is not a good description. If its a loud squeal turn the air conditioner or defroster off. If the squeals goes away the compressor or the clutch for the air conditioner compressor is locked up.
No answer for you - just want to state that our 2002 Caravan recently (7/09) starting making a load clicking noise when it is turned on. Belt looks good. I'm guessing its the compressor or clutch.
Im not exactly sure, I know it helps makes the air cold coming from your car air conditioner.
Sounds like the a/c compressor is locking up and burning both the a/c clutch and the belt..........
The electric fans used to cool the engine are designed to switch on to full speed when the air conditioner compressor is being used. When you turn on the heater/defroster the air conditioning compressor also turns on to help remove moisture from the air. Since both when heating or cooling your car the air conditioner compressor is working the fan will be running at high speed and makes more noise.
The AC compressor puts quite a load on the engine, especially one with less cylinders. It puts a load on the engine, causing it to jerk back and forth.
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a motor
clicking
The ac unit is a tax on the engine to run. This is true with all vehicles. Having the ac on will make the engine work harder to run the ac compressor. This makes the engine run hotter.
Bad bearing in compressor? Bad bearing in compressor?