What Causes the Rumbling Sound When Driving a Volkswagen CC?
1 Answers
If there is a buzzing noise while driving a Volkswagen CC, it may be due to wear of the tensioner pulley. The function of the tensioner pulley is to tighten the engine belt, preventing the generator and power steering pump from slipping. Because it is subjected to pressure and high-speed rotation for a long time, the bearing inside the tensioner pulley is prone to wear, resulting in noise and resonance. Other causes of vehicle driving noise: 1. Exhaust pipe deformation: Generally, the exhaust pipe of front-engine models extends from the bottom of the car to the rear. When driving on rough roads or if the chassis is bumped, the exhaust pipe can easily dent and deform. The deformed exhaust pipe increases exhaust resistance, causing a buzzing noise and resonance. 2. Loose parts: Some components of the vehicle may be loose, such as the fender or engine compartment cover. It could also be due to the thin sheet metal parts of the vehicle, which vibrate and resonate at high speeds. 3. Engine abnormality: Engine noise indicates that the technical state of a certain mechanism in the engine has changed. This is mainly caused by excessive wear of some parts or improper assembly and adjustment. Some noises may even indicate potential catastrophic damage to the engine. Therefore, when engine noise occurs, it should be repaired promptly to prevent further damage.
