The belt needs to be properly tensioned and aligned. It may need to be loosened or tightened, or lined up with the pulley. Worn belts should be replaced.
Occasionally belts may squeal or squeak even if properly installed. Although it is not recommended where other problems exist, there are retail sprays that can lubricate belts safely in these circumstances.
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To stop a squeaky belt, first inspect it for wear, cracks, or misalignment, as these issues can cause noise. If the belt appears in good condition, you can apply a belt dressing spray designed to reduce squeaking. Alternatively, tightening the belt may help if it's loose. If the squeaking persists, consider replacing the belt, as it may be nearing the end of its lifespan.
Most belts can be stopped from squeaking by adding lubrication. This can come in the form of belt dressing or even common bath soap.
An old belt getting wet. Get it changed out.
would the fan belt on a v8 motor cause squeaking
Power steering belt?
The most common cause for a squeaking noise when turning the steering wheel on any vehicle, including a 2001 Toyota Avalon, is the belt that runs the power steering pump. If the belt is fairly new, a small drop of any dish soap on the belt while the car is running will clear up the noise. If the belt is worn, it needs to be replaced.
The squeaking of a steering column can usually be fixed by adding power steering fluid. It can also be fixed by replacing the belt in the car.
To stop a shoulder strap of a seat belt from squeaking, first, ensure the belt is properly threaded and not twisted. Then, apply a small amount of silicone spray or lubricant specifically designed for automotive use to the belt's fabric and the retractor mechanism. Avoid using oil-based products, as they can attract dirt. Finally, gently work the belt back and forth to help distribute the lubricant evenly.
the belt on the engine is loose, so you want to see if you can tighten it or get a new belt . i hope this helps
te alternaor belt may be slipping causing the squeaking as it returns charge to the battery
lubricate your serpentine belt with some belt grease or some WD-40 and see if it doesn't stop.