How does the electronic throttle control idle speed?

[CollinDella]

Adjusting the idle speed via the throttle may cause premature engine wear, so it is not recommended for car owners to do it themselves. It is best to have it adjusted at an auto repair shop. Below is an introduction to car idle speed: 1. The function of car idle speed: Idle speed is a working condition of the car, referring to the engine running in neutral. The engine speed during idle is called the idle speed. The idle speed can be adjusted by changing the throttle opening size, among other methods. When the engine is running, if the accelerator pedal is completely released, the engine enters idle state. 2. Causes of unstable idle speed: Direct causes refer to mechanical parts being dirty, worn, or incorrectly installed, leading to variations in individual cylinder power, which results in an imbalance in cylinder power and causes unstable idle speed. Indirect causes refer to abnormalities in the engine's electronic control system, leading to poor combustion of the air-fuel mixture, making it difficult to balance cylinder power and causing unstable idle speed.