The car is always moving at high speed under different working conditions. There are always some parts that are unreliable, vulnerable to damage or aging. Improper assembly and unreliable connectors will cause the electronic control injection system to malfunction, and some functions will fail, causing the engine to work. Bad or not working. The car is always moving at high speed under different working conditions. There are always some parts that are unreliable, vulnerable to damage or aging. Improper assembly and unreliable connectors will cause the electronic control injection system to malfunction, and some functions will fail, causing the engine to work. Bad or not working. There are many components in the electronically controlled injection system, but the common faults that are prone to occur in various components are regular.
The engine electronic control unit is generally more reliable, and the failure rate is very low. However, as the mileage and service life of the car increase (the mileage exceeds 150,000 kilometers, and the service life reaches 6 to 8 years, especially when the operating environment is harsh), there will also be one or another failure, such as the aging and damage of individual integrated blocks, resistance , Capacitor failure, loose fixing bolts and loose solder joints of electronic components, etc., will cause the control function of the ECU to fail or the control system to work poorly, resulting in difficulty in starting the engine, unstable idling speed, poor power performance, increased fuel consumption and emissions. Exceeding the standard and other faults.