Why does the idle speed fluctuate after cleaning the throttle valve?

[HopeMarie]

After cleaning the throttle valve, it needs to be reset. If not reset, the idle speed may fluctuate. It is recommended to have it reset at a 4S shop. More information about the throttle valve is as follows: 1. The throttle valve is a controllable valve that regulates the air entering the engine. The air mixes with gasoline in the intake pipe to form a combustible mixture, which then burns to perform work. 2. The throttle valve is connected to the air filter at the top and the engine block at the bottom, and is known as the throat of the car engine. 3. The throttle valve needs to be replaced regularly, with the interval depending on factors such as the quality of the air filter, the quality of the engine oil, and the driving conditions of the vehicle. 4. There are four types of electronic throttle valves: electro-hydraulic, linear solenoid, stepper motor, and DC servo motor.