Explorer 2WD V6-245 4.0L VIN X SFI (1999)
Injection Timing: Description and Operation
The period of time the fuel injectors are energized is controlled by the powertrain control module.
The pulse width is determined from the inputs from the:
^
Heated Oxygen Sensor (HO2S).
^
Mass Air Flow (MAF) sensor.
^
Engine Coolant Temperature (ECT) sensor.
^
Camshaft Synchronizer.
^
Intake Air Temperature (IAT) sensor.
