86 Bronco II Quitting on Me!

[Bronco 2 man]

Hmmm…..

 

[Bronco 2 man]

The gr-yellow wire with the resistor seems to run from power dis. box to the tfi going by what the tech forum on here. Another gr-y

 

[Bronco 2 man]

Another gr-yellow runs from coil to the tfi or icm which ever you wanna call it!

 

[Mhollis1]

The gr-yellow wire with the resistor seems to run from power dis. box to the tfi going by what the tech forum on here. Another gr-y

Yes it mates up w/ gr-yellow from the coil and a gr-yellow from a plug not far from the coil and those 3 join into 1 that goes to the TFI. My schematic does not show these 3 joining into 1.

 

[Bronco 2 man]

Only other wires those color green and yellow according to schematic’s goes to the injector’s on the 2.9 from what I’m seeing! Or maybe I’m looking at it wrong?!

 

[Bronco 2 man]

I don’t see that either!

 

[Bronco 2 man]

No where on the schematic’s does it show that!

 

[Bronco 2 man]

I got a junk 89 Bii, looked at it also! I know it’s newer. The wire’s on it don’t tie in together neither! Same as schematic! From your pics looks like a factory splice not a hacked in splice! That being first year 2.9 and share’s the same schematic’s with the 2.3l, just throwing this out there! Long shot on what I’m saying lol! Just maybe someone screwed up on the assembly line, grabbed a 2.3l harness that Monday morning and starting hooking thing’s up and realized after he was done oops wrong one! And spliced in what he needed! Not saying it happened! But you never know.

 

[Bronco 2 man]

I’m sure your not the only one! There’s another harness out there done the same way.

 

[Mhollis1]

I got a junk 89 Bii, looked at it also! I know it’s newer. The wire’s on it don’t tie in together neither! Same as schematic! From your pics looks like a factory splice not a hacked in splice! That being first year 2.9 and share’s the same schematic’s with the 2.3l, just throwing this out there! Long shot on what I’m saying lol! Just maybe someone screwed up on the assembly line, grabbed a 2.3l harness that Monday morning and starting hooking thing’s up and realized after he was done oops wrong one! And spliced in what he needed! Not saying it happened! But you never know.

It’s funny you say that because once I saw the way these wires are joined together ( same as the tan wires) I thought they looked suspiciously like a ‘factory fix’. The tape covering these joints had that “strong white medical/EMS tape that disintegrates over time covering them. Who knows!

 

[Bronco 2 man]

Kinda like Chevy done on some of there vehicles! A lot of 95 model’s have a obd2 port with a obd1 ecm! They will not connect to each other without a special adapter! Therefore me and you can’t read code’s to diagnose the problem. Yes you can buy one offline, but odds are it’s not gonna work! So then you have to take it to “rape shop” lol, to get it fixed. I don’t have 7 or 8 grand for a computer lol, and shop price’s these days are ridiculous! Glad I can do most things myself!

 

[Bronco 2 man]

I’ve deleted most of the emissions on my 2.8! No smog pump, cat delete, etc! Surprisingly no emission light while running.

 

[Mhollis1]

Kinda like Chevy done on some of there vehicles! A lot of 95 model’s have a obd2 port with a obd1 ecm! They will not connect to each other without a special adapter! Therefore me and you can’t read code’s to diagnose the problem. Yes you can buy one offline, but odds are it’s not gonna work! So then you have to take it to “rape shop” lol, to get it fixed. I don’t have 7 or 8 grand for a computer lol, and shop price’s these days are ridiculous! Glad I can do most things myself!

Exactly!….I am still learning as I go but things like what I am dealing with are just frustrating. I just want to figure out why this TFI is getting so hot, I can’t find anything else that would cause this motor to shut down. Strange thing is I can drive it @ 55mph for an hour or more and it won’t die. Just stop and go traffic or at idle and the motor warms.

 

[Mhollis1]

I’ve deleted most of the emissions on my 2.8! No smog pump, cat delete, etc! Surprisingly no emission light while running.

I’ve replaced my emissions components and even cut out my cat.

 

[Bronco 2 man]

Does it run different before it dies or just die like you turned of the ignition key?

 

[Bronco 2 man]

How hot is your temperature gauge reading!

 

[Mhollis1]

Does it run different before it dies or just die like you turned of the ignition key?

It begins to buck and stammer like it is starving of fuel or air.

 

[Bronco 2 man]

Or should I say going up?

 

[Mhollis1]

How hot is your temperature gauge reading!

Gets right up to the O (of normal)

 

[Bronco 2 man]

Doesn’t go any higher