Fuel Control System

Fig. 1 Closed Loop Fuel Control system schematic. 1983 (1984 similar):

The Closed Loop Fuel Control System, Fig. 1, is used on S/T Series California models with 4-119 engine. The system is used to provide precise control of the air/fuel mixtures, allowing use of a dual bed 3-way catalytic converter and to control air flow in the AIR system. System components include an electronic Control Module (ECM), oxygen sensor, vacuum fuel control valve and duty solenoid, electronically controlled carburetor and other sensors and actuators. The three-way catalytic converter is also considered part of this system.