Fuel Injection System - EFI: Description

The Ford electronic fuel injection system (EFI) basically consists of 4 sub-assemblies: fuel delivery, air induction, engine sensors and the Electronic Control Assembly (ECA) of the Electronic Engine Control (EEC-III) system. 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 (B/MAP) sensors, Engine Coolant Temperature (ECT) sensor, Air Charge Temperature (ACT) sensor, EGR Valve Position (EVP) sensor, Crankshaft Position (CP) sensor and Exhaust Gas Oxygen (EGO) sensor.