Q: AC makes noise when compressor kicks on.

asked by on

My AC is making noise when the compressor turns on.

This has come up often on this vehicle. The noise typically comes from the AC compressor clutch. When the AC is turned on the clutch should engage tightly and spin with the AC compressor pulley. The clutch tends to make noise once it engages due to too much clearance between the clutch and the pulley. There are some flaws in the design of this compressor and the clearance is not easily adjusted. Though this will not cause any adverse issues with the car, the best way I have found to repair it is by replacing the compressor. This is an expensive option to fix the noise when it does not necessarily need a compressor. It is still best to verify that this is indeed the noise. To do this I would enlist the help of a certified mechanic, like one from YourMechanic, that has the knowledge to identify the noise.

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 makes noise when compressor kicks on.

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: I drove thru a puddle now car wont start

Hi there: First off, we glad you're safe and that your car didn't shut off while driving through the deep puddle. One of the hardest things to diagnose is electrical issues that are caused by water damage. Sometimes the problem...

Q: I have changed the camshaft position sensor, crankshaft position sensor, spark plugs and plug wires and there still is no fire.

Hi there. If there was a spark around the speed sensor as the engine was starting, then there is a major short in the ignition system. Check all of the wiring grounds and make sure that they all are hooked...

Q: Would a broken AC compressor cause the serpentine belt to break? 2009 Saturn Outlook

Hi there, yes, the air conditioning compressor is capable of breaking the serpentine belt a couple of ways. If the AC compressors seizes while operating, the shock load can snap the serpentine belt. If the AC clutch bearing seizes while...

Related articles

How Do Power Car Windows Increase Passenger Safety?
Power windows are responsible for approximately 2,000 emergency room visits every year. When a power window closes, it exerts enough force to bruise or break bones, crush fingers, or restrict an airway. Though...
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...
What are the Car Pool Rules in Hawaii?
Hawaii is widely regarded as a land of vacation and relaxation, and as such, its scenic roads and routes are far better known than the state’s freeways. But, as with all...