Car squeals loudly when turning on and also at times when...

Q: Car squeals loudly when turning on and also at times when accelerating with the A.C. on

asked by on September 03, 2017

Most of the time when I start my car it gives of a loud squealing sound.. The car will also do it when I accelerate or first leave from a stop sign or stoplight while have the A.C. on, once I turn the A.C. off the car will stop squealing and move a lot faster . I have also noticted it doing when I turn at times but those times I believe the AC was in. I . The serpentine belt was replaced last year. Today a mechanic came out and said that the belt was fine and that it was tightened enough. He believes the alternators bearings are going bad which is causing the squealing that having the A.C. on was causing to much on it, like over working. Should I replace the alternator or is their another issue that could be causing This? I've used belt dressing before and it was only a temporary soultion.

I also have noticed sometimes when I first start the car and try to drive off immediately the car kind of stalls for a second and then goes.

My car has 111167 miles.
My car has an automatic transmission.

If the belt is in good condition and is tightened properly, then suspicion falls on the accessories that it is driving. You could be right about the alternator bearings, but it’s premature to replace the alternator. It could also be a tensioner bearing or even a problem with the air conditioner. If there is a significant drop in power when you turn on the AC, that points to the AC compressor. It may be trying to lock up or if you have had it serviced, it might be overcharged causing a heavy load while it is operating. Too many things need to be checked before you start buying expensive parts. Contact YourMechanic to have a technician come out to your home or office to check out your squealing belts and tell you what your next step should be.

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

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

Tilt wheel problems.

You cannot alter the steering column to tilt up more. You would have to replace the column with one that has the tilt function.

Why does my engine surge when the cruise control is on in my 2017 Kia Sportage

Hello. This commonly occurs due to the fact that this engine is underpowered. The smaller engine in your vehicle has a problem maintaining speed which causes this fluctuation. I have seen a lot of complaints on this vehicle for this....

Malfunctioning driver's side power seat.

The power seat switch may be bad and would have to be checked for sending power out to the power tilt and recline functions. If the switch is working correctly then the power seat motors would be checked and replaced...

Related articles

Top 10 Bad Car Symptoms You Should Never Ignore
Ignoring car problems costs more than fixing them right away. Never ignore if your car has rough shifting, a shaky steering wheel, or is smoking.
The Best Used Cars to Buy If You're a Teacher
If If you are a teacher, probably foremost on your mind is getting to school on time. You would also probably like a used car that is easy on gas and not terribly expensive, and will hold your gym gear...
2010 Hyundai Santa Fe vs. 2010 Kia Rondo: Which One Should I Buy?
There are two different classes of vehicle represented here: the 2WD SUV in the Santa Fe and the mid-size station wagon or crossover SUV in the Kia Rondo. The difference between these two classes may seem slight, but the crossover...