Still chasing missfire....UPDATE....SOLVED

[bobbywalter]

The harness diagram is what I seem to have for a 1986 Ford Ranger/BII. It is very very difficult to read when you want to logically follow a circuit. It's priority are the wiring grouping and the harness plugs. It's a very large fold out system of diagrams. Not very good for troubleshooting.

those ones are great that are posted.

the early stuff was easier but the connectors sucked. the 89 revision was better once i got used to it and the 96 plus units i just look at insitu now as it is old hat.

i was referring to the actual build prints that i had recieved on accident that turned out rather educational.

there are several 3 foot by 2 foot pages. i had them in a big tube if you put it all together and you needed about 400 feet of floor space.


they were actual build layout prints. i wish i still had them.

 

[franklin2]

Yes, the ones that where posted are from the EVTM. I like them the best. They break each circuit down by it's main function.

Of course some circuits are controlled or control other circuits, so there is some page turning. But it's much better than a aftermarket Mitchell or some other diagram that shows all the wiring all on one or several pages and you end up following little lines from one page to another.

 

[rusty ol ranger]

Well....heres what i found out.

First off....for some reason the timing was super off. No idea why...but it was pushing close to 20*.

Reset it, took it for a drive (without messing with wiring) and it was running like shit again.

So i set it at 12* knowing thats about as high as you can safely go with these...it ran better...but not 100%.

Long story short for whatever reason it runs the best at around 14* base timing. Im thinking the balancer has moved or something. Anything more then that it pings, anything less it runs crappy.

I cleaned up the wires and used that loom\friction tape on the bare spots/crimps and shoved the whole mess into some convaluted tubing.

I also found the mate for the broken green wire and fixed that.

All in all its running good...even with the timing wacked before and all the hard runs i was giving it on test drives i stopped and topped it off and was surprised as shit to see 20mpg. Its actually pry a bit more then that as my speedo is a mph or 2 off.

Anyways, @Uncle Gump do you have the diagrams for the fuel sender wiring? I wanna try to get my gauge working properly or close to it. Sending unit is new so i wanna try to check for obvious wiring issues first.

 

[Uncle Gump]

Yes i do...

 

[RobbieD]

What year model is your B2?

I already had this 1987 page imaged and on file:

 

[Uncle Gump]

For the record...

@rusty ol ranger only asked if I had them... not if I would post them.

 

[rusty ol ranger]

For the record...

@rusty ol ranger only asked if I had them... not if I would post them.

got me there

What year model is your B2?

I already had this 1987 page imaged and on file:

View attachment 132305

86. Guessing 87 is the same

 

[lil_Blue_Ford]

got me there



86. Guessing 87 is the same

For the fuel sender… probably, but you never know with Ford. My green Ranger has a ground wire in the rear harness that I know is the ground and is in the proper place and connected to the proper things… but doesn’t match the color that it’s supposed to be according to my 2000 EVTM…

 

[Uncle Gump]

 

[alwaysFlOoReD]

View attachment 132306

Sure... No need to send it upside down! Rusty is not living below the equator...

 

[Uncle Gump]

Sure... Send it upside down! Rusty is not living below the equator...

Lmao... the new forum flips my pictures now and then.

I was gonna fix it but had this thought of Rusty flipping his phone trying to view it... getting all pissy... and going full on Chuck Norris.

I'd pay $10 dollars to see that video!

 

[RobbieD]

86. Guessing 87 is the same

The '86 covers with lamp out and low fuel warning; and without. I don't see that in the '87 book.

@Uncle Gump posted the '86 schematic.

I wanna try to get my gauge working properly or close to it.

The page after the schematic may help, then, especially the operation description and locations of connectors and splices. I think that you've already found bad splices elsewhere, so you know the drill . . .

Lmao... the new forum flips my pictures now and then.

When you're standing on your head underneath the dash, upside-down pictures work perfectly.