87 2.9 to 93 4.0 swap wiring


84Ironman

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I am finishing up my 4.0 swap and I'm having issues figuring out what has to be sliced at the firewall on the drivers side going to the dash. Donor vehicle was a 93 explorer 4x4 with auto trans which i used. My vehicle is a 87 ranger 2.9 auto 4x4. If anyone has diagrams showing which wires to hookup that would be great Or somewhere to find some decent diagrams online. My Chiltons is confusing me😣
 


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bobbywalter

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keep the explorer eec intact all the way through the pdb and lay it in...pretty much hook your crank/run up to the explorer pdb. use the oil pressure and temp units from the 2.9 if you want to keep that stuff.
 

84Ironman

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I've run all the wiring except everything that needs to be spliced at the drivers side fire wall. I got diagrams from all data and they don't seem to match exactly.
 

PetroleumJunkie412

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Because the 2.9 is a far superior engine.

It's your trucks way of trying to vomit out the abomination you've shoehorned under the hood.
 

BlackBII

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These may be the ones you already have, but here they are

I have the service manuals for 1992, I'll see if I can find the pin out diagram for the big plug that goes on the driver's side firewall from the explorer.


1993







1987







 

stsalvage

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i have 2 ranger
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You mean to tell me it's not a plug and play system you can't take 1990--94 with all the harness everything and make it work in a 1991--89 ford bronco II Or a 1990--92 franger and just swap it over even if it had a 2.3 or 3,0 the 3.0 wire harness connecter looks almost the same as the 4.0 connecter
 

bobbywalter

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1988
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FORD mostly
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4WD
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sawzall?
Tire Size
33-44
My credo
it is easier to fix and understand than "her"
You mean to tell me it's not a plug and play system you can't take 1990--94 with all the harness everything and make it work in a 1991--89 ford bronco II Or a 1990--92 franger and just swap it over even if it had a 2.3 or 3,0 the 3.0 wire harness connecter looks almost the same as the 4.0 connecter


no. its an 87. i assume he has 87 connectors on the engine side of the firewall. not a bullet setup.


these days i just do all duetche or gm weather pak style. unless i can find pristine oem connections to make jumpers.

https://deutschconnectorstore.com/


leaving his pdb intact just run the red green stripe to the power side of the diode and the red/blue to the starter.

from there if keeping the oem dash/gauges fit up the oem senders and hook those up to the wires on the ranger...


same for options as needed...ac-cruise ect
 

84Ironman

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Well those are pretty much the same diagrams I had to go by. So far I've got it cranking over but no spark. I do have power to the pcm and icm and coil.
 

84Ironman

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Not sure about signal to coil
 

84Ironman

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Update! Running. But only when I jump starter solenoid. Just turns by key . but is running really rich. And died several times. May have a having leak.
 

84Ironman

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Update! Running. But only when I jump starter solenoid. Just turns by key . but is running really rich. And died several times. May have a having leak.
 


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