Electronic Engine Control System (EEC-III)

This system is used on light duty models with 5.0L and 5.8L engines. Sensors monitor crankshaft position, EGR valve position, throttle position, manifold and barometric pressure, engine coolant temperature and exhaust gas oxygen. Information is sent to the Electronic Control Assembly (ECA) where it is analyzed.

The ECA then computes correct engine operating modes and signals other components to adjust timing, air/fuel ratio, EGR flow rate, thermactor air flow, canister vapor flow and idle speed. For additional information, see appropriate article in Computerized Engine Control section.