What is the high idle speed of Apulia 660?

Idle switch is not turned off, and the throttle is stuck.

1. Idle switch is not closed: when Apulia 660 idle contact is disconnected, ECU determines that the engine is in partial load state, and at this time, ECU determines the fuel injection quantity and time according to the air flow sensor, crankshaft position and speed signal.

2. Throttle stuck: The air intake of Apulia 660 must be strictly limited. If the air intake pipe leaks, the air flow sensor can't measure the real air intake, and the electronic control unit can't accurately control the air intake, which leads to the unstable idle speed of the car.