Now before someone tells me to search the forums on this subject, I already have and think I have another option of rigging one up to work. I just need to know if it's possible to do it the way I'm thinking it can be done.

Instead of getting a complete engine harness (i.e. from a mustang or another F150 that's already MAF), I think it would be possible to just run individual wires from the ecu to the injectors themself. The injector harness on SD systems (from what I can recall since fordfuelinjection got hacked) is simply a 3 wire setup (one wire for bank 1, one for bank 2, and a ground).

Assuming the above is right, all I'd have to do is run a new wire from the injector to the ecu and just put it in the right pin in the harness. The only problem I can see with this is getting the right pin connector that plugs into the computer, but I'm sure I can find them. Then after that just pick up a MAF harness off of ebay that can be pinned into the connector and then the rest of the pieces.

The only thing I need to know is what computer to get for this setup. I do have an E4OD and need a ecu number that will work with a 302 (I have the old firing order.) If someone can give me an ecu number that'd work for my needs, then I think I'd be set on the electrical side of this swap.

If any of my above thinking is not correct, let me know. This is just something I believe should work. Thanks.

 

What you are suggesting doing is what most people do with the mustang harness -- they pull the necessary wires for the injectors and MAF meter and insert those into the existing truck harness.

The injectors share a common power lead and are grounded through the engine computer instead of sharing a ground, just so you know. As for what computer to use that will operate the E4OD, I can't help you there.

 

Yeah, I meant to say ground and not power (been working on too many chryslers lately that are ***-backwards like that). And yeah in a sense I'm just making my own wiring harness instead of ripping one apart from a mustang. I just think it'd be easier for me to go that way is all.

If anybody knows which computer would be compatible, that'd help. I've been waiting for the owner of FFI to fix and secure his site so it won't get hacked again and look up which ecu's will work.

 

With the E4OD you need a mass air computer from a 94-95 F150, and those use sequential injection so you'll have to add seperate wires for each injector and a common ground. It'll be easiest to use a wiring harness from a MAF truck, but if you can't find one I guess you could build what you need from any old harness, just cut out the connectors(injector, MAF, O2) and solder in lenths of wire between these and the computer connector pins. Ford used the same connectors on most vehicles of this era so you should be able to clip pigtails from a variety of vehicles in the scrapyard.

 

can i use the harness from my 87 mustang that i converted to maf? I am selling the car just wondering if i could use the wiring harness and then get a eec ffrom a maf truck i have a 5 speed setup in my 90 f150 4x4.

-Randy

 

Yeah, I'm wanting to run sequential with a MAF setup so that's not a problem. I figured I'd just re-use the existing injector wires and just splice in a new ground wire for each that runs to the correct terminal on the computer. Pretty much the same thing for the MAF connector as well.

The hardest part I'm having is finding the right computer that's MAF and can run a E4OD. The only ones I <i>think</i> would be compatible are:

F4TF-12A650-AAA HOG2
F5TF-12A650-HB VEX1
F5TF-12A650-JB WAY1
F5TF-12A650-BYA BIO0
F8TF-12A650-NA AKC0

I've searched the salvage yards and ebay for any of those ecus and can't find any at all. If anybody knows of another place to check or another ecu number to try, let me know.

 

dont know why i've never seen this answer in any thread but... i called napa, spouted off the part number from ford, they'll order it up, 130 with a 70 dollar core, try to trick them into takeing your old ecu or just bite the bullet, autozone will do the same. about a week lead time on them right now in nebraska

 

What about if you have a 94 5.8L auto F-150 and you just aquired a 96 5.0L auto F-150 as a parts vehical.......do you think this swap would work? I know it is OBD II but should it all connect to the trans and engine?Then I just need a 5.8L mass air PCM from 96 right????????

 

I dont know about the hack at FFI.com but the site still has all the info
remember the new comp. will need a differant connector?
also depending on the comp. there will be more (up to 3) hego