Skip the auto shop - Our mechanics make house calls

Q: My car makes a weird squeaking sound when I hit the accelerator.

asked by on

My car makes this weird squeaking sound when I hit the accelerator
My car has an automatic transmission.

A: We had a 2012 Forte and recently traded it ...

We had a 2012 Forte and recently traded it for a 2016 Forte. Great cars. Squealing under hood can be caused by a few different reasons. The serpentine belt can be a common cause. The A/C compressor, water pump, alternator, and power steering pump are driven by 1 serpentine belt. Since it is such a large belt, a belt tensioner helps to keep the belt tight and easy to remove and replace as well. If the belt is worn (dry, cracked,glazed) it can slip on acceleration and make a squealing sound. Also, if any of the pulleys on the alternator, p/s pump,etc, are worn or loose, they can cause the belt to squeal.

Have a certified technician, like one from YourMechanic, come inspect the vehicle to isolate the exact cause of the squealing sound.

Was this answer helpful?

A: This is a common sign of a loose or worn be...

This is a common sign of a loose or worn belt. Over time, your car’s engine belts may become worn causing them to stretch. When this happens as you press the gas pedal and the belt goes from a relatively low speed (at idle or when first starting the car, no speed at all) to a much higher speed as the engine accelerates, this can cause the belts to squeak. This can happen when they stretch due to the fact that the pulleys on your car’s engine are turning faster than what the belt can keep up with when it is not tight against the pulley. This can also happen in extremely cold weather conditions due to the fact that the rubber belts become slightly brittle and less pliable in cold weather. I would recommend having an expert from YourMechanic come to your location to diagnose and tighten or replace your belts.

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: Keys quit working

Hello, and thank you for writing in. Without doing some diagnostic testing it is impossible to know if this is a fuel, spark, or other electrical issue. Once the issue is determined, you can then get quotes on a repair....

Q: Car made a weird roaring sound this morning when driving at low speeds in light rain.

I would recommend having your suspension checked thoroughly to determine if you have any play in your tie rods, ball joints, wheel bearings, control arms, etc. This could be the reason that the vehicle jerks as well. As for...

Q: Engine hesitating in the first 20 minutes of driving when cold

This could be caused by a cold state vacuum leak. Basically, this is a condition where a vacuum leak is present until the engine heats up and the induction parts expand and seal the leak. When the vacuum leak is...

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...
P0052 OBD-II Trouble Code: HO2S Heater Control Circuit High (Bank 2 Sensor 1)
P0052 code definition HO2S Heater Control Circuit High (Bank 2 Sensor 1) What the P0052 code means This code is seen when the Engine Control Module (ECM) tries to control the...
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...