Why does my car make a screeching sound when I start it?
If you ever hear a loud engine squeal or screeching noise when starting your car, it could be a sign of a bad serpentine belt or an alternator that is failing. A bad alternator is the most common cause of a car that squeals when starting.
Why does my serpentine belt make a squeaking noise when I start the car?
A squeaky belt can indicate several different issues. If the noise only occurs when turning, starting the engine, or accelerating, it probably is a worn or loose belt. A constant squeal may mean the tensioner system or a pulley is damaged. Diagnosing the sound is the first step in how to make a serpentine belt stop squealing.
Why does my car belt screech when I start the car?
When these belts start to slip, they will make a sharp screeching noise. Step 2: Operate the accessories. Most often, the belt screeching occurs at cold start: when the car is started after being parked for at least four or five hours.
When do you know you have a serpentine belt problem?
This sound is the first warning of a serpentine belt problem to come, especially if it’s present all the time. It’s a weak, sometimes barely noticeable squeaky sound that may even disappear when you start to drive or the engine heats up a bit.
Why does my car make a screeching sound when I start the engine?
There are no “check engine” lights on and the car runs fine. The screeching sound lasts about 30 seconds and then poof – it stops. This happens in all kinds of weather (hot, cold). My mechanic couldn’t find anything wrong with the car (and of course it never makes the screeching sound when at the mechanic’s).
Why does my serpentine belt make a screeching sound?
The belt slides over a motionless pulley causing extensive friction, heat and the recognizable sound. The screeching sound may also be caused by a severely worn out serpentine belt (in this case, it must be nearly pulverized).
This sound is the first warning of a serpentine belt problem to come, especially if it’s present all the time. It’s a weak, sometimes barely noticeable squeaky sound that may even disappear when you start to drive or the engine heats up a bit.
When these belts start to slip, they will make a sharp screeching noise. Step 2: Operate the accessories. Most often, the belt screeching occurs at cold start: when the car is started after being parked for at least four or five hours.
What should I do if my car belt makes a loud squealing sound?
If there is a problem in the belts the sound may stop instantly. This is not a permanent fix. In fact, the belt might start squealing again in just a few minutes. But if the squeal stops, it’s a good indication that the noise is simply a belt and not a tensioner. Step 5: Check the belt tension and condition.