2.9 fuel injector color code.

[mikie]

Can someone guide me to a color coded fuel injector wiring diagram. 88 Ranger 2.9. All of my injector number tags have rotted away.

 

[RonD]

Each injector has a red wire, 12volt key on, just daisy chained from one injector to the next

Non-sequential fuel injection will just have 2 grounding wires from computer, seen here: https://www.therangerstation.com/te...es/Diagrams_ElectronciEngControls2_9_3of3.JPG

Its called Batch Fire injection, in the case of a V6 engine 3 injectors open at the same time, then next rpm the other 3 open

So 2 injectors open on passenger side(1, 2) and 1 injector on drivers side of engine(4)
Then next rpm its 1(3) and 2(5, 6)
Keeps the lower intake full of air/fuel mix and each cylinder just sucks in what it needs

In sequential injection each injectors would have its own ground wire from the computer
Most Rangers didn't get sequential injection until 1995 and up

 

[mikie]

Thank you. I was looking for sequential injection and the schematic didnt make sense. Its all clear now.