Electronically Controlled Feedback Carburetor System: Notes

The use of a 3-way catalyst requires precise fuel metering. To> provide precise fuel metering, the electronically controlled feedback carburetor system consists of the following components:

• Model 6500 Feedback Carburetor
• Vacuum Solenoid/Regulator
• Exhaust Gas Oxygen Sensor
• Throttle Angle Vacuum Switch (Non-Turbo)
• Cold Temperature Vacuum Switch (Non-Turbo)
• Idle/Deceleration Vacuum Switch (Turbo)

The electronically controlled feedback carburetor system has 2 modes of operation, as determined by the sensors. These are the "Closed Loop" and "Open Loop" modes.