What is the clutch on an AC compressor?

Compressor clutches are components that can be found the air conditioning (A/C) systems of cars, trucks, and other automobiles. The function of a compressor clutch is to allow the pump inside a compressor to freewheel whenever the air conditioning is not in use.

How much does it cost to fix an AC compressor clutch?

Between $610 and $664 is the average cost for an AC compressor clutch replacement. Labor costs are between $184 and $232 while parts are between $426 and $432.

What causes AC compressor clutch failure?

Clutch failure is usually caused by high pressure or voltage issues, or a combination of both. With a wrong charge the pressure switches will cause the compressor to constantly engage and disengage. If there is not enough charge the compressor will overheat due to a lack of oil circulating.

What does a bad AC compressor clutch sound like?

Growling noise with compressor disengaged: A worn compressor pulley bearing or clutch bearing will cause a growling noise. Squealing noise: A loose, dry, or worn A/C compressor belt will cause squealing noise. This noise will be worse during acceleration.

Can you replace just the AC clutch?

Yes you can just replace the clutch pulley on the a/c compressor. You may not be able to get the old pulley off and if you do the new one will not seat and hold on the front of compressor and will wobble throwing off belt. Have the pulley removed and then see the front of the compressor the shape it is in.

Can you replace just the clutch on an AC compressor?

Yes you can just replace the clutch pulley on the a/c compressor. The issue that you may have is the pulley bearing seized up and may have spun on the front of the compressor nose cone and will damage it.

What happens if I don’t fix my AC compressor?

Refrigerant could be leaking out of the compressor and that could lead to potential health concerns such as coughs, headaches, irritated eyes and nausea. If all the refrigerant leaks out, it could cause the unit to overheat.

What causes an AC clutch to burn up?

Some common causes of compressor overheating are lack of external cooling, poor ventilation, short cycling, low suction pressure, high head pressure, lack of lubrication, excessive wear and tear, and electrical problems.

How do I engage my AC compressor clutch?

At the compressor’s front side, unplug the single wire connector, take a jumper wire and attach it to the wire that you just disconnected from the compressor. Connect the other end of the jumper’s wire to the positive terminal of the car battery. This will enable the compressor to start manually.

Should I replace the AC clutch or the whole compressor?

The primary reason to replace an entire A/C compressor and clutch assembly is for better long-term reliability. The AC clutch pulley might be what needs replacement, but it’s likely to have done some damage to the compressor on its way out.