What is the reason for Excelle not idling?

The vehicle is not idling, but if the engine can still operate normally when stepping on the accelerator, it is likely that the idling motor is broken or the electronic accelerator is seriously blocked. At this time, the vehicle can still run, but when waiting to stop, you need to lightly step on the accelerator to keep the engine running, otherwise it will stall. It is also possible that a sensor is damaged, resulting in the wrong mixing ratio, so there is no idle speed.