What is the reason for no response when stepping on the accelerator and only idling?

[LilyAnn]

The reason for no response when stepping on the accelerator and only idling is a damaged throttle valve, which should be replaced promptly. The throttle valve is a controllable valve that regulates air intake into the engine, available in two types: traditional cable-operated and electronic throttle valves. After entering the intake pipe, the air mixes with gasoline to form a combustible mixture for combustion and power generation. It is connected to the air filter at the top and the engine block at the bottom. In traditional engines, the throttle valve operating mechanism works via a cable or linkage, connecting the accelerator pedal at one end and the throttle linkage plate at the other. Electronic throttle valves primarily use a throttle position sensor to control the opening angle of the throttle valve based on the engine's required energy, thereby adjusting the amount of air intake.