How to solve the high idle speed of Wuling Light?

The solution of high idle speed of Wuling Light: 1. Check throttle opening: For most electronically controlled engines, when the engine reaches normal temperature and the idle valve is completely closed, the basic idle speed is set to 500 50r \ u002Fmin. If the basic idle speed is too high, please check the vacuum seal of the system, especially the vacuum tube, PCV valve and crankcase. 2. Check the load signal of the engine: at this time, the idle control valve can be turned on, and its opening should be between 15%-25% at the normal working temperature of the engine. If the idle control valve is opened too wide, check whether the engine load signal is normal, such as air conditioning signal, battery voltage, temperature value of water temperature sensor, etc. 3. Check the vacuum degree of the intake manifold: when the engine is idling normally, the vacuum degree of the intake manifold should be 57-7 1kPa. If the vacuum degree is too low, the pressure signal of the engine intake system will be abnormal. At this time, the engine computer will mistakenly think that the load will increase and the idle speed will increase. 4. Reset the engine computer: The so-called engine computer reset is to clear the fault memory in the engine computer and let it learn idle again. 5. Check whether the throttle valve is completely closed at idle speed and whether the throttle cable is stuck: pull the throttle rocker arm in the closing direction. If the idle speed of the engine can be reduced to normal speed, it means that the throttle valve is stuck and it is not relevant; If the throttle cable is stuck, replace the cable. If the throttle shaft is stuck, remove and clean the throttle body. 6. Re-adjust the idle speed program: re-adjust the idle speed according to the prescribed procedures of the engine. If the adjustment fails, further inspection should be carried out.