Computerized Engine Controls - 4 CYL.: Description
NOTE:
Some of the above listed models which were manufactured early in the production year, may be equipped with the C-4 system rather than the CEC system. If vehicle is equipped with the C-4 system, see appropriate article in this section.
The Computerized Emission Control (CEC) system is an electronically controlled system that closely controls air/fuel ratio. This close control of the air/fuel ratio is needed to lower exhaust emissions while maintaining good fuel economy and controlling the air injection system. The primary objective of the CEC system is to maintain the ideal air/fuel mixture ratio of 14.7:1 under all operating conditions. When the ideal air/fuel ratio is maintained, the catalytic converter can effectively control nitrogen oxides (NOx), hydrocarbons (HC) and carbon monoxide (CO).