Why does the idle speed become high after cleaning the throttle?

[SavannahFitz]

The reason for high idle speed after cleaning the car's throttle is: The carbon deposits in the throttle device are cleaned, resulting in more air intake than normal, which causes the high idle speed. Here is an introduction to the relevant knowledge about car idle speed: 1. Concept definition: Idle speed is a working condition of the car, referring to the engine running in neutral gear. The engine speed at idle is called idle speed. The idle speed can be adjusted by changing the throttle size, etc. Idle speed means the engine "outputs power but does no work." 2. Classification: It can be divided into normal idle, driving idle, and unstable idle.