Deceleration Control System - CALIF: Description
The Deceleration Control system is designed to maintain a balanced air/fuel mixture during deceleration. Upon initial deceleration, rapid closing of throttle plates can cause overly rich fuel mixture.
This system consists of air by-pass valve on California vehicles and throttle positioner system. The throttle positioner system consists of servo diaphragm, engine speed switch and 3-way solenoid valve. California vehicles also use a throttle dash pot in addition to the throttle positioner.