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.

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?

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

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: How do you release the hand brake when the button is jammed?

Sometimes if you pull up on the parking brake too hard then it may be hard to release. The easiest way to release it is to push on the button while pulling up on the parking brake lever. It may...

Q: Heater want stay hot

The lack of heat being generated by your system may indicate a clogged heater core. The [heater core]((https://www.yourmechanic.com/services/heater-is-not-working-inspection) is a small radiator like unit that circulates the hot coolant from the engine through the heater core which then uses this...

Q: My interior and exterior lights do some sort of flickering or flashing.

Hello, thank you for writing in. When all lights and electronic components are experiencing these types of symptoms, it is often related to the connection rather than the battery itself. The cables should not have a build up of corrosion...

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...
Rules of the Road For Iowa Drivers
Driving on the roads requires knowledge of the rules, many of which are based on common sense and courtesy. However, even though you know the rules in...
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...