Futian Xiangling m 1 idle high automatic refueling

The reason of high automatic refueling at idle speed of Futian Xiangling m/kloc-0:

1. It is normal if the cold car starts to refuel automatically. When the car is in a cold state, the engine will automatically increase the idle speed, so as to quickly burn and heat up, quickly raise the temperature of engine oil and coolant, and optimize the lubrication conditions.

2. If the valve suddenly refuels automatically under normal driving conditions, it is abnormal. Check whether the driver's cab mat is added, and the accelerator pedal is a little hung. Sometimes I feel that I haven't stepped on the accelerator, and the accelerator pedal is still being pushed by something, causing the illusion of automatic refueling.

3. Or there is something wrong with the calibration table of ECU, which needs to be re-optimized (this needs to be operated in 4S shop).

4, the throttle is too dirty, serious carbon deposition, etc. , it will also cause instability in idle speed control, and sometimes the engine will automatically increase speed.

5. There is EMC problem (electromagnetic interference) in the electronic control part, and the output voltage signal of the accelerator pedal is disturbed, which leads to unstable signal, thus affecting the engine speed control.

6. The voltage signal of fuel injection control is disturbed (such as coil aging and electric leakage), and the speed may be unstable.