Causes of wide injection pulse

The reasons for wide fuel injection pulse may be: 1, and the fuel injection pulse width is too large, which generally depends on idle speed. If the idle speed is high and the pulse width is wide, it is generally caused by the inaccurate signals of the throttle position sensor and the water temperature sensor. If the idle speed is normal, it is caused by the failure of the oxygen sensor; 2. The closed-loop data obtained by the computer is inaccurate. Among these data, oxygen sensor and water temperature sensor are the main ones, but of course, intake pressure sensor and throttle position sensor are not excluded. 3, you can buy a Bluetooth ODB detector, install a software to check all parts of the car, or ask the people at the testing station to re-test the data. @20 19