Skip the auto shop - Our mechanics make house calls

Q: Serpentine belt broke, replaced it but lost AC. It broke again 2 days later

asked by on

The serpentine belt broke and I lost both my power steering and my AC which is normal. After replacing it though, I only regained the power steering even though the belt was definitely engaging the AC. I drove it without AC for a couple of days until this morning I could smell a burnt rubber smell while driving and the belt broke again. Is the AC not working causing my belt to brake? How should I go about fixing the problem? Thanks a lot.

My car has 202000 miles.
My car has an automatic transmission.

A: It would’ve been helpful to know if the A/C...

It would’ve been helpful to know if the A/C was working fine or having a problem when the first belt broke. I suspect that the A/C pulley is binding, causing the second and first belt to break. If the A/C was working good right up to the first belt breaking then the first belt may have gotten caught up in the A/C pulley and clutch. This would cause the lack of A/C engagement and pulley to bind. Either way it may be caused by the A/C compressor.

The clutch and pulley should be inspected to see if they are faulty or if the old belt was binding it. I’d suggest getting the A/C inspected by a qualified mechanic, such as one from YourMechanic. Once on site, a mechanic will be able to diagnose the symptoms you’ve described and help you make the necessary 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: RPMs max out

Hi there. If the throttle body is fully closing then this is either caused by an electrical short or a vacuum leak. If the throttle body is not fully closing then the throttle cable may be binding. I would suspect...

Q: Why is my car running hot?

Hi there. Your vehicle running hot only when driving could be the thermostat only partially opening. It may be the result of air trapped in the cooling system when the radiator was replaced. The cooling system may need to be...

Q: Noise coming from air conditioner

Hi. From my experience with this car, this is typically caused by a failing AC compressor. The compressor on this vehicle is a common failure and it typically starts to make a loud squeaking or rattling noise. If the noise...

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...
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...
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.