1996 Bronco/F-Series

Section 03-04B: Fuel Charging and Controls, 5.0L and 5.8L Engines

1996 Vehicles Equipped with 5.0L and 5.8L SFI V-8 Engines Workshop Manual

DESCRIPTION AND OPERATION

Fuel Injection Timing

For fuel injection timing:

Each fuel injector (9F593) is energized once every other crankshaft revolution in sequence with engine firing order.
The period of time that the fuel injectors are energized (injector "on time" or pulse width) is controlled by the vehicle's powertrain control module (PCM) (12A650).
Air entering the engine (6007) is monitored by mass air flow, pressure and temperature sensors.
The outputs of the electronic engine control sensors are processed by the powertrain control module.
The powertrain control module determines the needed fuel injector pulse width and outputs a command to the fuel injectors to meter the exact quantity of fuel.

Electronic Fuel Injection, 5.0L and 5.8L SFI Engine

Item	Part Number	Description
1	9424	Intake Manifold
2	—	Crossover Tube (Part of 9D280)
3	9424	Intake Manifold
4	9F593	Fuel Injector
5	9F792	Fuel Injection Supply Manifold
6	9F715	Idle Air Control Valve
7	9C968	Fuel Pressure Regulator
8	—	Throttle Linkage (Part of 9E926)
9	9E926	Throttle Body
10	9F483	EGR Valve

Sequential Multiport Fuel Injection (SFI)

The sequential multiport fuel injection system is classified as a multi-point pulse time, mass airflow controlled fuel injection system. Fuel is metered into each intake port in a sequential firing order. Fuel injectors pulse to follow engine firing order in accordance with engine demand through fuel injector nozzle tips mounted on a tuned intake manifold (9424).