How does the throttle body work?

What is a throttle body? The throttle body is a butterfly valve that sits between the intake filter and the intake manifold.

It regulates the amount of air that can enter the engine based on input from the driver via the accelerator pedal.

As more air flows into the engine, it injects more fuel, which provides more power.

Today's throttle bodies are mostly electronically controlled, this throttle body is mechanical.

It includes inputs for the TPS and MAP sensors, as well as routing and idle adjustment screws for the IAC valve.