The throttle car has a horn, and the turbocharger has a horn to solve it.

When the throttle car whistles, this situation should be caused by the wear of the turbocharger impeller. The solution is to replace the turbocharger or the bearing of the turbocharger is broken and needs to be replaced.

Why the turbocharger whistles.

1, the turbocharger works on exhaust gas. When the engine speed is low, the turbine cannot be driven, and the turbine does not work, so there is no sound. When the speed reaches above 2000, the turbine starts to work, and the uphill speed is low gear and high speed, and the exhaust gas of the engine will increase to drive the turbine, so it is normal for the turbocharger to make noise.

2. The engine exhaust valve is not tightly sealed.

3. Diesel exhaust gas recirculation valve (EGR) and gasoline engine throttle valve are not tightly sealed.

4. The exhaust pipe is not tightly sealed or poorly welded.

Maintenance of turbocharger

1, try to use synthetic engine oil. The engine oil used in turbocharged engine must have good wear resistance, high temperature resistance, high oil film strength and good stability. Mineral oil is not resistant to high temperature, and the working temperature of turbocharger is very high. After high temperature, mineral oil will produce water vapor, which will affect its lubrication effect.

2. When the cold car starts, preheat the turbocharger for a few minutes. Preheating can fully lubricate the turbocharger. If the vehicle runs directly after starting, stepping on the accelerator will cause great wear and tear to the turbocharger, especially in winter, the poor viscosity of engine oil will lead to poor lubrication effect, and if the vehicle is not warmed up, it will cause great damage to the turbocharger.