1. Serpentine belt: The serpentine belt is a long, thin belt that drives various components of the engine, such as the alternator, power steering pump, and air conditioning compressor. If the serpentine belt is loose or damaged, it can slip and make a screeching noise.
2. Alternator: The alternator is a device that generates electricity for the car's battery and electrical system. If the alternator is malfunctioning, it can cause a screeching noise.
3. Power steering pump: The power steering pump provides hydraulic pressure to the power steering system, which makes it easier to turn the steering wheel. If the power steering pump is malfunctioning, it can cause a screeching noise.
4. Air conditioning compressor: The air conditioning compressor compresses refrigerant gas to cool the air in the car. If the air conditioning compressor is malfunctioning, it can cause a screeching noise.
If you hear a screeching noise when you turn on your car, it's important to have it diagnosed by a qualified mechanic as soon as possible to prevent further damage to your vehicle.
