Q: AC clutch making squealing noise

asked by on

AC compressor making noise squealing. 3 compressors have been installed all making the same noise. Practically everything has been changing the AC system except for the lines. I noticed the clutch work fine after the third compressor was installed and after it got warm the clutch started to move slowly and making noise as you accelerate

My car has 156000 miles.
My car has an automatic transmission.

Of course, make sure the oil and refrigerant charge are correct. Too much of either will create an excessive load on the compressor. Also, check the operating pressures to see if they are within an acceptable range. Check belt alignment and tension. If all of the pulleys driven by the serpentine belt are not aligned in a plane and/or the belt tension is insufficient you will get noise. Also, check ALL the pulley bearings for turning ease because if one is binding that will affect the entire system of pulleys, and all accessories, driven by the belt. If you are using a rebuilt compressor and it is truly defective, try a different vendor. If you desire that a certified Mechanic from YourMechanic resolve this for your during an a/c compressor inspection, please call to schedule a mobile visit.

Was this answer helpful?
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details
  1. Home
  2. Questions
  3. AC clutch making squealing noise

Get an instant quote for your car

Our certified mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing

Get a quote

What others are asking

Q: Grinding noise when braking and turning left.

Hi there. The grinding noise seems to be a rotating item on your vehicle. Check the wheel bearings on the front of the vehicle and see if there is any dust around them. If there is dust, then the bearing...

Q: Q: Smell coming from A/C vents

Hello there, a few different items can cause this type of smell in the vehicle. The most common is the heater core, but that has already been checked. Other likely causes would be an exhaust leak, fuel leak, or something...

Q: Whining sound when I accelerate and shift from gear to gear. 1992 Ford F150

Hello - you may be ruling out the throwout bearingthen too quickly, since your first symptoms are the noise occurs when you shift. Try taking the belt off (so that no engine-driven accessories are turning), starting the engine, then press...

Related articles

What Causes Hoses to Leak?
While the largest part of your engine is mechanical, hydraulics plays a significant role. You’ll find fluids at work in a number of different areas. Your car's fluids include: Engine oil Transmission...
P0240 OBD-II Trouble Code: Turbocharger Boost Sensor B Circuit Range/Performance
P0240 code definition Turbocharger Boost Sensor B Circuit Range/Performance What the P0240 code means P0240 is an OBD-II generic code triggered when the Engine Control Module (ECM) detects the intake boost...
P2428 OBD-II Trouble Code: Exhaust Gas Temperature Too High Bank 1
P2428 code definition A P2428 trouble code signifies that the PCM has detected a problem in the exhaust gas temperature sensor circuit in bank 1, which subsequently contains the number one...