What Causes Exhaust Pipe Abnormal Noises?

[OAlexander]

Here are the specific reasons for abnormal noises from the exhaust pipe: 1. Damaged muffler or exhaust pipe: Symptoms include hearing abnormal noises from the exhaust pipe when pressing the accelerator pedal. The sound may not be very loud, and the car may drive normally, but fuel consumption increases. Sometimes, noises may also come from the front section. 2. Aging heat shield: Symptoms include abnormal noises under the engine during low-speed driving or when accelerating, especially in colder weather. It is recommended to lift the car and check if there is a heat shield between the exhaust pipe and the ground. The issue may be caused by an aging heat shield, and replacing it can solve the problem. 3. Damaged exhaust pipe: Symptoms include abnormal noises when turning or moving forward, often originating from the front wheel drive shaft with a damaged joint.