Throttle Body: Description and Operation

Digifant I Throttle Valve Potentiometer:

The Throttle Valve is mounted on the intake manifold inlet downstream of the air flow sensor. The Throttle Valve is of the two barrel side draft type with progressive throttle linkage. The function of the Throttle Valve is to regulate air flow into the engine, the more it is open the greater the air flow into the engine. Throttle Valve operation is controlled by the throttle cable and the accelerator pedal. The Throttle Valve does not control idle speed, this is done by the Motronic control unit.