Impulse Hatchback L4-1809cc 1.8L DOHC (4XF1-W) (1992)
Throttle Body: Description and Operation
Throttle Body Cross-Section
PURPOSE
Provides a means to controlling air flow into the engine, therby controlling engine operation.
LOCATION
On the intake collecor.
CONSTRUCTION
The throttle body consists of the main bore, air bypass passage, vacuum passage for vacuum operated components and the following parts.
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Throttle valve which is interlocked with the accelerator pedal and controls the amount of the intake air
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TPS which detects the throttle valve opening and sends a signal to ECM
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Idle air control valve which controls the amount of air bypassing the throttle valve during idle.