Q: Squealing noise coming from engine

asked by on February 16, 2016

A squealing noise started coming from the engine a few days ago. I think the timing belt might need replacing.

Car is making a noise Inspection $79.99 - $99.99 Get a Quote

Hi there, the Corolla has a timing chain that won’t make a squealing sound because there are splines on the inside of the belt/chain to prevent slipping. There are tensioners and pulleys that can wear out over time causing unwanted noise from under the hood which could be happening. Typically, however, the serpentine belts are the cause of a squealing sound from underneath the hood. These belts power components like the water pump, alternator, and A/C compressor (if the car is equipped with A/C). Over time, they can lose their grip which will cause them to slip on the pulleys creating a squealing sound. If the belts haven’t been changed recently it’s most likely time for a replacement. Have a certified technician inspect the belts for you to find the cause of the sound.

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

What others are asking

Car vibration, engine shuddering at idle

Hello. It sounds like the torque convertor is malfunctioning causing the car to vibrate and shudder. It is also possible that there is a problem with the drive shaft being out of balance. One more possibility is that the transmission...

Loud pop and started running hot

A possibility is a head gasket leak where exhaust gas leaks into the cooling system pressurizing the cooling system and blowing out a hose. However, there are other potential, less serious, causes for what you describe. To get the actual...

How do I release the shoulder belt for the second row center seating position?

The second row center seat’s shoulder belt should stay connected at all times unless you need to fold the seat down or accommodate cargo. Of course, when those situations arise, you will need to know how to release it. Here’s...

What's the difference between a racing crankshaft and a stock one?

Most of the time it is unnecessary to use a racing crank in a street motor, unless you are planning on building a 700HP+ motor. The racing cranks are stronger, better balanced, more aerodynamic, and also much more expensive. Most...

Squealing noise?!

Hey there. You have a binding accessory on the engine like the A/C compressor or pulley, power steering pump, or an idler pulley. You should first test the computer to see if the power steering pressure switch is activating by...

Brand new timing belt broke what could be the impact on my engine

The engine in your vehicle is labeled as an interference engine. This label means that when the timing belt drive system experiences a failure, there is an almost 100% chance the valvetrain suffered a great deal of damage. This possibility...

Where do I find the engine number in a 2012 Toyota RAV4?

While your vehicle identification number includes a lot of information, it doesn’t provide much about the engine, other than the size that originally came with the car. The engine number tells a lot more. This information is located on the...

Do I have to break in my new vehicle?

If you’ve recently purchased a vehicle, you’re in luck. This vehicle doesn’t require any elaborate or tedious “breaking in” activities. However, your new vehicle will last longer and run more efficiently if you follow these guidelines when you first begin...

How do I turn on the emergency flashers?

You will want to turn on the emergency flashers for your vehicle if it stops working or if you’re in an accident. Locate the switch with a triangle on it on the front of your display area. Press the...

Related articles

What Is the Difference Between a 4-Stroke and 2-Stroke Engine?
Four-stroke and two-stroke engines have similar components, but don't work the same way. Four-stroke engines are often found in off-road vehicles.
What Do the Belts on the Front of an Engine Do?
Car serpentine belts power multiple parts like the power steering pump and air conditioning. A broken engine belt can cause damage to components.
How to Replace a Variable Valve Timing (VVT) Switch
An engine has a variable valve timing switch that fails when there is a reduction in engine power or the Check Engine Light illuminates.