Feedback Carburetor System: Description

On Nova models, the following systems are controlled by the Electronic Control Module (ECM) to control exhaust gas emissions:

• Fuel Evaporative Emission Control (EVAP) System
• Carburetor Feedback System
• Deceleration Fuel Cut-Off System
• Cold Mixture Heater - CMH

The ECM is the "brain" of the computerized engine control system.