2.8L Carburetor CEC System: Description

The Computerized Emission Control system (CEC) is used on California V6 models. It is an electronically controlled system that controls engine operation and lowers exhaust emissions, while maintaining good fuel economy and driveability. The Electronic Control Module (ECM) is the "brain" of the system. The ECM monitors many engine-related systems to constantly adjust engine operation.

The CEC system is primarily an emission control system, designed to maintain a 14.7:1 air/fuel ratio under all operating conditions. When the ideal air/fuel ratio is maintained, the catalytic converter can control oxides of nitrogen (NOx), hydrocarbon (HC), and carbon monoxide (CO) emissions.