Why is there a buzzing sound at 2000 RPM?
2 Answers
The causes of abnormal noise at 2000 RPM are the sound from the radiator cooling and a malfunctioning temperature regulator. Noise from the radiator cooling fan: The noise may come from the electric fan working for radiator cooling at idle speed, or from excessive clearance between the piston and cylinder wall at low speed or during gear changes. The buzzing sound could be from the electric fan for radiator cooling, but this noise is intermittent. Faulty temperature sensor or regulator: The issue could be due to a faulty temperature sensor or temperature regulator. It is essential for the car owner to inspect these components promptly to avoid abnormalities while driving, which could lead to more severe vehicle malfunctions and financial losses.
I remember this issue, the engine buzzing at 2000 RPM is quite common. Usually, the causes include a loose or aged belt system, such as the fan belt or air conditioning compressor belt; bearing wear, like problems with the water pump or generator bearings, can cause resonance at specific RPMs; or leaks in the exhaust system or loose brackets. Once, my car had this issue, and the buzzing sound was due to a loose fan belt under the hood—tightening it fixed the problem. I suggest you start with a simple check: start the car, let it stabilize at 2000 RPM, open the hood, and listen to whether the sound is coming from the front or the rear. Gently press the belt with your hand to see if it wobbles too loosely. If the sound only appears during acceleration, it might be related to air intake or vibrations. But don’t take it lightly—if the buzzing persists or worsens, it could indicate that a bearing is about to fail. Head to the repair shop and let a mechanic listen to it to avoid costly repairs later. Safe driving is the priority, so address the issue promptly to prevent accidents.
