Q:

What does a squealing noise indicate when a car starts?

A:

Quick Answer

There are several possible problems indicated by a loud squealing noise when a car is started. The most common problem is a worn or loose belt.

Know More
What does a squealing noise indicate when a car starts?
Credit: Erik Dreyer The Image Bank Getty Images

Full Answer

The serpentine belt, also sometimes called the accessory belt, drives the alternator and various pumps, and if it is loose or worn, it begins making a squealing noise. While light wear is not a cause for immediate concern, the belt should be replaced immediately when the wear is noticeable. If the serpentine breaks while the car is moving, it may damage the parts it is attached to. If the belt is not worn, the owner should check the tensioner to ensure the belt is tightened properly.

Learn more in Car Parts & Maintenance

Related Questions

  • Q:

    Why is my car making a rattling noise?

    A:

    As cars grow older, they often develop many rattles; however, if the rattle is coming from the front of the engine along with ticks and slaps, it sometimes indicates a loose timing chain. If the chain breaks, it causes serious damage to the engine, according to About.com.

    Full Answer >
  • Q:

    Why does my car make a whistling noise?

    A:

    While whistling noises in a car are due to several different problems, a vacuum leak is one common reason for this issue. Vacuum leaks also cause the car to run rough and stall. Worn, broken or cracked vacuum hoses are a common source of the leak, according to 2CarPros.com.

    Full Answer >
  • Q:

    Why does my car make a humming noise?

    A:

    There are various possible reasons why a car makes a humming or whirring noise as these sounds could be a sign of a bad bearing in the steering system, water pump or alternator. Faulty air conditioning systems may make a similar noise as well, especially if there is a problem with the serpentine belt, which can get stretched and worn out. The tensioner may malfunction as well and defective air conditioners usually have more of a buzzing noise, particularly when the system is overcharged or when liquid refrigerant enters the compressor.

    Full Answer >
  • Q:

    Why does a car make a noise when the wheel is turned?

    A:

    A noise that comes from turning the wheel when going around corners usually comes from some part of the steering component; the steering system may need to be lubricated or replaced. It is important for car owners to have this diagnosed to ensure that the car is running properly and that the driver will not lose control as a result of the steering system being compromised.

    Full Answer >

Explore