Why is there an abnormal noise at 2000 RPM with turbocharging?
2 Answers
An abnormal noise at 2000 RPM with turbocharging may be caused by a turbo issue, and it is recommended to have it inspected and repaired at a 4S shop. Introduction to Turbo: A turbo is a fan in the engine of a car or aircraft that improves engine performance by using exhaust gases to blow fuel vapor into the engine. It is a rotary power machine that converts the energy of a flowing working medium into mechanical work. Advantages and Disadvantages of Turbo: Without changing the engine displacement, a turbocharged engine can significantly increase the power and torque of the engine. The components inside a turbocharged engine often operate in high-temperature and high-impact environments, so this type of engine has special requirements for engine oil, which must have good wear resistance, high-temperature resistance, fast oil film formation, high oil film strength, good stability, and low viscosity.
My turbocharged car has been making unusual noises around 2000 RPM after prolonged use, which is quite common. Most of the time, it's caused by worn turbo bearings or insufficient lubrication. When the turbo speed increases, bearing friction issues can create noise at specific RPM ranges. It could also be due to loose or leaking intake/exhaust pipe connections—that hissing sound is particularly noticeable at 2000 RPM. Don’t ignore it, as this can lead to unstable power output, increased fuel consumption, and in severe cases, turbo damage costing thousands to repair. I recommend taking it to a professional repair shop ASAP. The mechanics will use tools to check pipe sealing and bearing conditions. Don’t forget regular maintenance with quality oil to keep the lubrication system functioning smoothly. The diagnostic process is straightforward: start the engine, gradually accelerate to 2000 RPM, and listen for the noise source to preliminarily determine whether it’s an issue at the front of the engine or the chassis.
