What is the reason for the abnormal noise during car idling that disappears when the clutch is pressed?

[LeAdalynn]

The reason for the abnormal noise during car idling that disappears when the clutch is pressed is due to issues with the clutch pressure plate, release bearing, or gear bearings inside the transmission. The clutch is a crucial component in the vehicle's transmission system, installed between the engine and the gearbox, capable of connecting or disconnecting the engine from the transmission. The functions of the clutch include: 1. Facilitating gear shifting and preventing overload in the transmission system; 2. Ensuring that the engine's crankshaft and transmission device can transmit or cut off the engine's power output according to the needs of the vehicle's operation; 3. Assisting the car in starting smoothly. During driving, the driver can press or release the clutch pedal as needed to temporarily separate and gradually engage the engine and the gearbox, thereby cutting off or transmitting the engine's power input to the transmission.