Electronic Fuel Injection: Description

The Ford electronic fuel injection system (EFI) basically consists of 4 sub-assemblies: Fuel delivery, air induction, engine sensors and the Electronic Engine Control (EEC-Ill) system computer (ECA). The fuel delivery system includes an in-tank high pressure fuel pump, a primary fuel filter, a secondary fuel filter, fuel supply and return lines, fuel injectors and fuel pressure regulator.

The air induction system includes the throttle body, intake manifold and the cold engine speed control. Engine sensors are as follows: Throttle position sensor (TPS), barometric and manifold absolute pressure sensors (B/MAP), engine coolant temperature sensor (ECT), air charge temperature sensor (ACT), EGR valve position sensor (EVP), crankshaft position sensor (CP) and exhaust gas oxygen sensor (EGO).