Feedback Carburetor System: Description
The computer controlled emission system uses sensors located throughout the vehicle to collect information. This information is fed to an ECM. The ECM uses the information to correctly adjust the pulse air control, fuel-cut, idle-up and bowl vent systems, EGR system and secondary throttle system, as well as feedback system. The ECM is located behind the glove box.
The ECM receives the following inputs: engine speed, throttle position, exhaust oxygen concentration, engine coolant temperature, clutch engagement, electric load (from headlights, coolant fan, rear defogger and heater fan), altitude compensation and engine compartment air temperature. See Fig 1 .