Skip the auto shop - Our mechanics make house calls

Q: Rattling and screeching noise

asked by on

When I drive the car, especially if it sat for a while, it starts making weird noises. It's rattling and slightly screeching. I went to the shop and was told that the AC bearings went bad. The AC had a leak about 20 days ago. I had the AC recharged. What do I need to replace in the AC system if the AC bearings went bad? Would that stop the noise?

Hello. The A/C compressor clutch and pulley should be checked and you should replace the pulley only if the compressor is not leaking. If it is, then replace the complete compressor assembly. If you would like to have this checked, a qualified professional from YourMechanic can come to your car’s location to inspect the screeching noise and make the appropriate repairs.

Was this answer helpful?

Need advice from certified mechanic? Get help now!

Over 1000 mechanics are ready to answer your question.
The statements expressed above are only for informational purposes and should be independently verified. Please see our terms of service for more details

Ask a Mechanic
(100% Free)

Have a car question? Get free advice from our top-rated mechanics.

Ask A Mechanic
Over 10,000 questions answered!

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: Can my car drive 350 miles with this issue?

There are several possibilities for the issues you've described, but I would look more towards a belt being the issue. It could be the belt, belt tensioner, air conditioning compressor, the alternator, or one of the other belt driven accessories....

Q: loud squeeking noise when I back up and turn the wheels

Hello there. The symptoms you are describing are common with a damaged wheel bearing, CV joint that is loosing lubrication (due to a CV boot being split) or brake pad that is dragging on the rotor. There are several components...

Q: Rattling noise when idling

The clutch release bearing is the most likely cause of this noise. If so, then the transmission would need to be removed to service it. I recommend having a mechanic, such as one from YourMechanic, come to you and run...

Related articles

How to Avoid Back Pain in a Car
If you have back problems, sitting in a car for an extended period of time can be excruciating. Even without back problems, you could experience discomfort and soreness from...
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...
P2103 OBD-II Trouble Code: Throttle Actuator Control Motor Circuit High
P2103 means there is a fault with the throttle actuator control motor circuit, likely due to a defective electrical component or part.