Feedback Carburetor System: Description

NOTE: For information on I-Mark, see CHEVROLET SPECTRUM FEEDBACK CARBURETOR SYSTEM article in this section.

The Closed Loop Emission System monitors engine/vehicle functions. The Electronic Control Module (ECM) controls engine- related systems to adjust engine operation under all normal driving conditions.

System consists of the ECM, an oxygen sensor, a coolant sensor, idle and WOT switches, a barometric switch, an inlet air temperature switch, a feedback carburetor and a catalytic converter.