Achieva L4-144 2.4L DOHC VIN T SFI (1996)
Throttle Body: Description and Operation
Throttle Body
The throttle body (1) assembly is attached to the intake manifold. The throttle body is used to control air flow into the engine, thereby controlling
engine output. The throttle valve within the throttle body is opened by the driver through the accelerator controls.
During engine idle, the throttle valve is almost closed, and air flow control is handled by the Idle Air Control (IAC) (3) The throttle body also
provides the location for mounting the Throttle Position (TP) (2) sensor and provides a manifold vacuum source for various components. Vacuum
ports are located at the throttle valve to generate vacuum signals needed by various components.
