What did you just say?
o5 f150. Huh
o7 f250....

A 92 harness is not compatible with a 95 harness. If you research wiring diagrams you can compare and possibly make a 92 harness work.

 

I just looked at it and I want whatever he's on, in the words of Cheech Marin and Tommy Chong, "Must be some dynomite sheet man.".

 

That's mostly Maui Waui, but it's got some Labrador in it.

 

It's actually a 95 f150 which originally had the 4.9 which I swapped with a 97 f250 5.8.

 

Thank you & welcome to FTE.

Hope a solution can be found. (If indeed there was a question in there... , if not welcome anyway.)

 

Wildrebel69xxxx, As I pointed out originally, depending on what market it was built for and actual weight class, an OBS 1997 F-250 may or may not be EEC-V and OBD-II. If it is EEC-IV and OBD-I, then the front harness may be all you need to make it work. The issue will be some pins in the big 76 pin front harness connector may be different, and if it is indeed an over 8500 GVWR truck, it will not have any of the air bag wiring for the crash sensors.

The quick, obvious differences, OBD-I the test plugs are underhood near the driver's side hinge, OBD-II, an underdash connector on the right side of center. EEC-IV, 60 pins in 3 rows of 20 each, EEC-V, 104 pins in 4 rows of 28 each. Physical size of the box is the same, but the connector plug and socket are wider on the EEC-V system.

What it boils down to, is:

If the donor is under 8500 GVWR:
Plus - MAF/SEFI; Air bag sensors
Minus - Dash and front harnesses are different to accommodate the EEC-V and OBD-II

If the donor is over 8500 GVWR:
Plus - front harness for V8 will be close to plug and play with it's EEC box
Minus - will not be MAF/SEFI; no air bag sensor wiring

Good luck with it and if you need some wiring information, I probably have it.

 

Not certain this is the place, but here it goes.

I have a 95 F250 5.8 E4OD MAF [CA version] with a Kenne Bell supercharger on it. I'm looking for information about changing the software. The catch code is OIL2 which is my stumbling block. It appears there is no one that has information with that.

I'm willing to purchase the right equipment, but from my understanding, if you do not have the right software to modify the right catch code, then I'm out of luck. I cannot believe I'm the only one with this code, but certainly, there may not have been enough out there that someone spends the effort to work through software hurdle.

Any guidance?

 

Hi Butch, you have a unicorn as far as most of us would be concerned.

Hopefully some of the large brains will have a suggestion.

Stick around & participate even if they don't. Pictures? (Truck &/or catch label would be nice)

 

You can recalibrate the ecu to a maf 302 code, if yours is not supported by quarterhorse or tweecer. Then you can tune from there.

If you have an original maf 351... Personally I'd swap in a 302 maf ecu as to not screw up the original computer.

We need pics of this truck and engine. It's not often we come across these unicorn trucks. We like pictures.

 

If you're lucky, it might use the same AHACB strategy that the 302 MAF E4OD trucks use.

 

Thanks for the suggestions. I never really thought about buying a computer that I could program and keep the original one for a just in case issue.

With all the modifications that I did, the biggest issue is I installed 24lb injections with a the proper MAF sensor, but it would ping to beat hell. So I installed the original MAF sensor and lowered the fuel pressure to the point it runs ok. It would be nice to make it right.

As for a unicorn, I guess it is. I bought the Kenne Bell charger about 10 years ago, installed headers, 1.7 rockers, BBM large bore throttle body, dual exhaust, and the injectors. If I did my home work, I would have researched this software issue before I put the injectors in. Certainly before I threw the old ones out.

Since I will be buying a used computer, anyone suggest who I would talk to about programing? or who to say away from? I'm in the Seattle area and it would be great to work with someone local.

 

The computers in these trucks are not programmable. Everything is through the chip or emulator (quarterhorse, tweecer, etc..). The minute you pull your chip off, the computer reverts to its factory programming.

 

You are running into some of what I did converting a 460 to an MAF/SEFI system. I was originally planning to use a WAY1 catch code EEC which is a 302 W/E4OD and a TwEECer to modify the tune to the different values (460 ci, 24 lb/hr injectors, 90mm MAF and modify the E4OD shift pattern) Since I was essentially building the system from scratch (truck is a 1986 originally carbureted and C6) I could use whatever I wanted. I finally ended up using an EEC-V which is reprogammable.

 

So you never really used EEC IV. Since I have a 4EOD transmission, I would like to make it as simple as possible. Time to start looking for a computer. The good thing is that they are getting older so the prices are down.

 

You need a WAY1, VEX1, HOG0 or HOG1 computer. They all use the AHACB strategy and are supported by the QuarterHorse, which is superior to the Tweecer. They should also be plug n play into your truck.

As mentioned though, it's highly probable your truck already uses an AHACB computer if it's an EEC-IV MAF E4OD truck, even though it's a 351 instead of a 302.

Edit: I did some research and it looks like your truck uses the AHACA strategy, which I believe is supported.