What are the symptoms of a faulty drive shaft in the Teana?

[DiRylee]

Symptoms of a faulty drive shaft in the Teana are as follows: 1. There is a knocking sound from the drive shaft when starting the car or during gear changes while driving, especially noticeable when driving at low speeds in high gears. 2. No abnormal noise from the drive shaft when starting the car, but knocking sounds occur while driving. 3. No abnormal noise from the drive shaft when starting the car, but unusual sounds appear when the car is coasting. 4. Continuous noise throughout the entire driving process. Below is some relevant information about the drive shaft: 1. The drive shaft consists of a shaft tube, a telescopic sleeve, and universal joints. The telescopic sleeve can automatically adjust the distance changes between the transmission and the drive axle. The universal joint ensures the angle changes between the transmission output shaft and the drive axle input shaft, enabling equal angular velocity transmission between the two shafts. 2. The drive shaft is a crucial component in the vehicle's drivetrain for transmitting power. Its role, together with the transmission and drive axle, is to transfer the engine's power to the wheels, generating driving force for the car.