Diamond Leopard 125k Why can't the throttle be loose and the idle speed be lowered immediately?

Reasons and solutions of Diamond Leopard 125k idling with throttle released;

1. Throttle fault: The throttle mainly controls the intake air of the engine. Throttle failure will cause the throttle opening to be wrong, which will reduce the sensitivity of the throttle. When idling, the throttle can't be closed normally, which will lead to abnormal idle speed, loose throttle and unable to reduce idle speed. It is recommended to go to a professional maintenance station for inspection and maintenance.

2. Idle speed control valve failure: Idle speed control valve is located above the throttle body. When the vehicle is idling, the throttle valve will be completely closed. At this time, the idle speed is adjusted by controlling the amount of air bypassing the throttle body. If the idle valve fails, the idle speed will not be adjusted correctly, resulting in unstable idle speed and inability to reduce it. It is recommended to go to a professional maintenance station for inspection and maintenance.

3. Water temperature sensor failure: The water temperature sensor signal is an important signal for the engine computer to determine the idle speed. If the water temperature sensor fails, the signal of the water temperature sensor will be abnormal, which will make the idle speed control function of the engine computer abnormal. When the water temperature obtained by the engine computer is lower than the actual value, the idle speed of the engine will be high, and loosening the throttle can not reduce the idle speed of the car. It is recommended to go to a professional maintenance station for inspection and maintenance.