92 4.0l into 91 2.9l truck?

rickcdewitt · Dec 1, 2007

92 4.0l into 91 2.9l truck?-my swap thread

my 4.0l swap thread,
anyone know the differences between the 91 and 92 dash harnesses,or have links on hand for good(free) online wiring diagrams,or similar threads?i'm using the complete engine bay harnesses from the 92 and any 4.0l spec. stuff i can find.

AllanD · Dec 1, 2007

If the '92 is a ranger it's essentially a plug it in and start it up
process.

If you are working with an explorer harness there are some differences and I'd suggest doing some ebay shopping for the relevant EVTM manuals.

Hell, even with my tech library I recently bought another EVTM recently
one for a 1993 LincolnMk7 (I'm playing with the complete audio system from one)

AD

rickcdewitt · Dec 1, 2007

AllanD said:
If the '92 is a ranger it's essentially a plug it in and start it up
process.

I'd suggest doing some ebay shopping for the relevant EVTM manuals.
AD

is an "EVTM" a factory electrical manual?i should get one for a 91 and 92 anyway .yes the donor harness is from a 5 speed 4.0l 92 ranger,so that it will make it easier to smog(f-n california) and "plug and play" sounded good to me(i know i'll need to go over it all so i can be sure)!

rickcdewitt · Dec 6, 2007

here's the donor engine bay harnesses for a 92 ranger 2wd

and some of the other 92 stuff

92 2wd ranger cpu

still waiting on the EVTM's for 91 and 92 to show up and them i'll get into the wiring

rickcdewitt · Dec 7, 2007

another thing i was wondering is this-should i put the 3/8" duff coil spacers on my truck to compensate for the 4.0l?how much heavier is it?

EDIT:no need for alignment,they are almost the same weight.

AllanD · Dec 7, 2007

I have no idea how much heavier it is.

I installed NEW coils while my truck was jackstand wheeling.

EVTM, Electrical Vacuum Troubleshooting Manual

It doesn't show the wiring routing per-say what it is is an explanation
of what the wiring DOES which is actually somewhat more useful

AD

2manyfords · Dec 7, 2007

I wouldn't worry about coil spring spacers unless the springs are already sagged.

My '92 Ranger was a 2.9L truck and installing a 4.0L didn't make any real difference to ride height when the stock suspension was on it.

rickcdewitt · Dec 8, 2007

they look about the same size but i woulden't be surprised if i gained a hundred pounds between the motor and the tranny.i'll add the spacers anyway.EVTM's will be here any day now that i figured out paypal.i have alldata at my disposal also if i need.

rickcdewitt · Dec 9, 2007

so i tore into it today finally and removed the 2.9l cpu,
engine bay harnesses and got the donor cpu,its harness,and the drivers side harness into my truck.

rickcdewitt · Dec 9, 2007

i figured it would be easiest to re-pin the 92 donor headlight harness to match my 91 dash harness,

so since i don't have a diagram yet of the big connector i unplugged the 91 harness and cut off the white connector with a cut-off wheel about 1" from the connector so it would be easier to draw a diagram with the body of the connector and where the pins are in each connector-(91 and 92),and what color each wire is.this is made easier by the terminals on the connector being numbered 1-53.i noted 8 wires that were different and am still working on them.

this plug in my hand and the two to the right had me worried but ford left the wires the same color and i was even able to just take the wires out of the big connector and slide them into the ends i cut of the 91 harness.

rickcdewitt · Dec 9, 2007

can't forget my trusty copilot grumpy!providing moral support and protection throughout the swap :icon_twisted:

rickcdewitt · Dec 9, 2007

so i'm down to 4 wires left!one of them goes to this connector/plug?:

do any of you guys know what it is?its on the drivers side,inside of the radiator support,it has a plug in the end with 4 terminals inside.in the circuit i'm chasing,both harnesses(91 and 92) go to this in the same terminal but the wires are different colors. :dunno:

rickcdewitt · Dec 26, 2007

AllanD said:
EVTM, Electrical Vacuum Troubleshooting Manual

It doesn't show the wiring routing per-say what it is is an explanation
of what the wiring DOES which is actually somewhat more useful

AD

thanks allen for the advise,spot on! :icon_thumby:

i went through everything after getting the EVTM'S and i've got to say that aquiring them is one of the best suggestions i've got on a ranger site.connector pin-outs,component and connector location,troubleshooting tips.i'm getting one for every ford i have to work on!i see now that with the EVTM'S i should have just used the cpu and harness from my donor explorer and sold my jba's instead of trading them for a ranger harness.oh well though i have a harness and cpu for a 4.0l swap into a b2 later on.once i get a long block i'll post up more pics and swap info.

rickcdewitt · Jan 3, 2008

any of you guys use the 4.0l torque damper found on 4.0l rangers at the drivers front of the motor for your swap? the explorer doesn't have it and i'm curious if it's really neccessary?

rickcdewitt · Apr 26, 2008

finally found a motor and got her buttoned up these last couple days.i used a non egr 4.0 from a 93 sploder so i only needed to swap the engine wiring harness.
she fired the first time and settled into a steady idle.i still need to pull codes and put the rest of the truck back together but the short test drive i took was enough to convince me the 4.0 is MUCH more spirited in a ranger than the exploders i'm used to.my 33" tires spin like the little stockers used to LOL.
fuel lines plugged right in,wiring was pretty simple once i had the EVTM's for both trucks(thanks for the advise AllanD :icon_cheers:

)i had to splice less than 10 wires,and i reused the old motor mounts and radiator.didn't need the gauge cluster mine works fine.
the shift linkage and removeable plate on the tranny hump came from a 91 explorer and bolted straight in.
i don't care if i wind up getting the same or a little better mileage,(i was getting 15-17) it was totally worth it! :3gears:

92 4.0l into 91 2.9l truck?

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