Chase g50 can't idle down. What happened to the brakes?

Common reasons for not being able to compete at idle speed are.

1, improper cleaning of the throttle valve led to the failure of the stepping motor.

2. There is something wrong with the water temperature sensor, which causes the computer to misjudge that the engine is running at low temperature, resulting in more fuel injection and high speed.

3. The solenoid valve is faulty or in a normally open state, resulting in an intake air volume greater than the ECU standard intake air volume, resulting in an excessive idle speed.