Fuel injection pulse width 8.8 Idle speed

The fuel injection pulse width is too high, resulting in excessive fuel injection and high idle speed.

The normal value of the fuel injection pulse width is between 1.5 ms-2.9 ms, and the numerical unit of the fuel injection pulse width is milliseconds ms. The larger the value displayed by the parameter, the longer the fuel injector starts to inject fuel each time, and the richer the mixture obtained by the engine. The smaller the value displayed by the parameter, the shorter the injection time of each injector and the thinner the mixture.

The solution for high fuel injection pulse width is as follows: 1. Check whether the oxygen sensor and water temperature sensor are aging: if the fuel injection pulse width is too large, it generally depends on idle speed. Generally, high idle speed and wide pulse are caused by inaccurate signals from the throttle position sensor and the water temperature sensor. Idle speed is normal and fuel injection pulse is wide, which is generally caused by the failure of oxygen sensor. 2. The closed-loop data obtained by the computer are inaccurate, which leads to the oxygen sensor and the water temperature sensor being the main data, and of course, the intake pressure sensor and the throttle position sensor are not excluded. You can check the inside of the car through the Bluetooth ODB detector or re-test the data through the staff of the detection station.