What Causes the Engine Resonance and Buzzing Sound During Acceleration?
2 Answers
The reason for engine resonance and buzzing sound during acceleration is: the engine is not running smoothly. You should check whether the cylinder pressure, ignition spark energy, throttle position sensor, idle air control valve, and engine mounts are normal. An engine is a machine that can convert other forms of energy into mechanical energy. The engine can refer to either the power generation device or the entire machine including the power device. Its types include internal combustion engines, external combustion engines, gas turbines, and electric motors. The components of an engine include: 1. Valve train; 2. Crankshaft and connecting rod mechanism; 3. Ignition system; 4. Cooling system; 5. Lubrication system; 6. Starting system; 7. Fuel supply system.
I also experienced the issue of the engine buzzing when accelerating. It started when I was speeding up on the highway, and the whole cabin felt like it was vibrating—the sound was quite annoying. Later, when I took it to the repair shop, they found that the engine mount had loosened, causing vibrations to transfer to the frame and create a resonant buzzing sound. The mechanic said that aging mounts or loose bolts are quite common, especially in cars that have been driven on bumpy roads for a long time, as resonance can accelerate wear on other components, such as the exhaust pipe or suspension system. He advised not to ignore such sounds and to check the mounting parts promptly, otherwise, repairs could become more expensive. I’ve learned a bit about maintenance myself and now, before driving, I quickly inspect the mount connections with a flashlight to make sure there are no major issues.
