Why does the speed indicator on the dashboard of Volkswagen Ling Du exceed three?

There are three reasons why the speed index of Volkswagen Ling Du dashboard exceeds the standard:

1, the air intake system leaks, and the air intake is not accurately controlled by the electronic control unit, resulting in an air-fuel ratio error.

2. The fuel injector leaks oil or is blocked, which causes the mixture to be too rich or too thin, and some cylinders work badly and the idle speed is unstable.

3. Throttle or idle valve is faulty, or there is no matching learning after cleaning.

4. The engine idle speed is too high due to the overload of the gearbox or its own failure.

5. The vehicle power management system is in a state of improving the power generation of the generator.