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Home >> Porsche >> 1984 >> 928 Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Fuel Injection System - BOSCH AFC >> Description >> Throttle Switch
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Throttle Switch

A contact-type throttle switch is installed on the throttle chamber of all models. It converts throttle position into electrical signals to inform ECU of throttle position.

The 928S models use an idle position micro-switch to signal the ECU when the throttle is at idle position. A separate enrichment switch closes when the throttle angle is greater than 30°. This signal is used to increase fuel delivery 12%.