How to Solve Excessive Fuel Injection Pulse Width?

[KayleeLynn]

Solutions for excessive fuel injection pulse width are as follows: 1. Check if the oxygen sensor and coolant temperature sensor are aging: Excessive fuel injection pulse width usually needs to be considered in conjunction with idle speed. If the idle speed is high and the pulse width is large, it is generally caused by inaccurate signals from the throttle position sensor or coolant temperature sensor. If the idle speed is normal but the pulse width is large, it is usually due to a faulty oxygen sensor. 2. Inaccurate closed-loop data received by the ECU: Among these data, the oxygen sensor and coolant temperature sensor are the main factors, though the intake pressure sensor and throttle position sensor cannot be ruled out. You can use a Bluetooth OBD scanner to check the vehicle's internal conditions or have the data rechecked by professionals at a testing station.