How to set the low idle speed of electronic throttle?

All idle speeds of the electronic throttle are set by the manufacturer. If the idle speed is too low or too high, it is usually caused by dirty throttle. To solve this problem, clean the throttle and initialize the throttle with the maintenance inspection instrument for setting. However, if the throttle position sensor is damaged, only the throttle assembly can be replaced. Ordinary high-end cars can be adjusted and matched by computer, while the low-end doors have screws. The following is the adjustment method: 1. First, release the throttle, adjustment screw makes the engine reach the lowest stable speed, and then put the screwdriver on the idle screw. 2. When the engine is about to stall, slowly loosen the idle screw to make the engine rotate stably and reach high speed, and then loosen the throttle screw to minimize the engine speed from high speed. 3. Then, unscrew the screw, increase the engine speed, and then suddenly close the throttle until the throttle opening reaches the minimum. Repeat this operation until the idle speed adjustment is completed. Note that this adjustment will make the engine wear prematurely. So I don't recommend the owner to adjust himself. You'd better go to the garage to adjust it.