You will hear a crackling sound coming from the bottom of the car when you first start it. This is normal and is most likely an engine belt problem. To check the tightness of the engine belt, you can try holding the transmission belt between your fingers.
Then turn it. Note that the operation must be carried out when the engine is cold. The twist angle should generally be less than 90 degrees, otherwise it will need to be adjusted. Abnormal noise in the engine belt is caused by the belt being too dirty. Cleaning it with water or lubricating it with a little lubricant can also eliminate the abnormal noise.
Solution
If the crackling sound occasionally comes from the engine compartment, open the front hood and carefully check for foreign objects. Sometimes foreign objects will block the vehicle. and cause the vehicle to squeal, be sure to check itTake care carefully and make it a habit to check the engine compartment frequently.
If the vehicle makes a screeching sound as soon as the brakes are applied while the vehicle is moving, this means that the brake pads have worn to the limit and have started to grind all the way to the brake rotor . time, you should go to the repair shop for maintenance as soon as possible.