What Causes the Abnormal Noise When Driving a Buick Regal?

1 Answers
StCatherine
07/30/25 7:06am
Buick Regal driving with abnormal noise reasons: 1. Tensioner pulley wear: The tensioner pulley's function is to tighten the engine belt, ensuring the generator and power steering pump do not slip. Due to prolonged pressure and high-speed rotation, the bearings inside the tensioner pulley are prone to wear, resulting in noise and resonance. 2. Exhaust pipe deformation: Generally, in front-engine models, the exhaust pipe extends from the bottom of the car to the rear. Driving on rough roads or impacts to the undercarriage can easily cause the exhaust pipe to dent and deform. A deformed exhaust pipe increases exhaust resistance, leading to a buzzing noise and resonance sensation. 3. Wheel hub bearing wear: The wheel hub bearing is installed in the suspension's "knuckle" and constantly bears the vehicle's weight and impacts during daily driving. The bearing balls inside are prone to wear, with the most typical symptom being a buzzing noise and resonance sensation in the car.
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