Can a car with an electronic throttle increase idle speed?

Cars with electronic throttle can't idle. Electronic idle speed can only be adjusted by the engine control system, and manual idle speed cannot be adjusted by itself. The opening and closing of the electronic throttle is completely controlled by the motor, instead of the traditional throttle being mechanically controlled by the throttle line between the throttle pedal and the throttle. Whether it is electronic throttle or wire-controlled throttle, the idle speed is automatically adjusted. Under the influence of carbon deposition, the idle speed will change. Take the electronic throttle as an example. After the throttle is completely released, the electronic throttle is not completely closed, and there is still a gap for air to pass through. This is the air needed for idling. Carbon deposition will block a part of the gap and the amount of air entering will decrease. If no countermeasures are taken, the idle speed will shake or even turn off. At this time, the engine computer controls the throttle to open a little, so that the intake air becomes larger and the normal idle speed is maintained. The computer can control the throttle to adjust the idle speed, of course, it will not be adjusted indefinitely. There are only minor adjustments. Adjust it to the limit, or the car will break down.