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Re-wiring 1986 EFI Questions

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Gary Lewis

Re: Re-wiring 1986 EFI Questions

Administrator

If the pinouts in that spreadsheet are correct I think you have a problem going from the 1986 5.0L to 1989 5.8L ECU.

What I've done is to take that spreadsheet and create a comparison tab and put the info from those two ECU's side by side. And I deleted the rows where that ECU doesn't use that particular pin.

And what I see is significant change, and changes that would cause serious problems. But I'm not an expert here so I'm going to tag Bill to see what he thinks.

Gary, AKA "Gary fellow": Profile

Dad's: '81 F150 Ranger XLT 4x4: Down for restomod: Full-roller "stroked 351M" w/Trick Flow heads & intake, EEC-V SEFI/E4OD/3.50 gears w/Kevlar clutches
Blue: 2015 F150 Platinum 4x4 SuperCrew wearing Blue Jeans & sporting a 3.5L EB & Max Tow
Big Blue: 1985 F250HD 4x4: 460/ZF5/3.55's, D60 w/Ox locker & 10.25 Sterling/Trutrac, Blue Top & Borgeson, & EEC-V MAF/SEFI

85lebaront2

Re: Re-wiring 1986 EFI Questions

Administrator

Gary, I had actually mentioned this to Rene, and offered to send him the original file if he wanted it. The majority of the changes are between 1986 and 1987,

That brings up the other question, do you have the correct V8 list on the 1989? I do not recall two O2 sensors until OBDII (1996) unless it was on a 4.9L (300).

Bill AKA "LOBO" Profile

"Getting old is inevitable, growing up is optional" Darth Vader 1986 F350 460 converted to MAF/SEFI, E4OD 12X3 1/2 rear brakes, traction loc 3:55 gear, 160 amp 3G alternator Wife's 2011 Flex Limited Daily Driver 2009 Flex Limited with factory tow package Project car 1986 Chrysler LeBaron convertible 2.2L Turbo II, modified A413

Gary Lewis

Re: Re-wiring 1986 EFI Questions

Administrator

Bill - The two O2 sensors leapt out to me as possibly meaning we have the wrong pinouts. Do you have another set?

Gary, AKA "Gary fellow": Profile

ReneH

Re: Re-wiring 1986 EFI Questions

Ok...I have to admit, that I'm not 100 percent understand what's the problem...I have a blank connector and can do a re-wiring as it has to be...

The only thing I don't find on the 1989 ECU pin list is the knock-sensor.

René's Profile

Bronco 1986 Ford Bronco XLT 302/347 stroker with 351W EEC-IV and 351W factory cam C6 gearbox. Jeep 1986 Jeep CJ7 256 I6 with T5 gearbox. Buggy 1972 HAZ Buggy 122 Ford Cologne V6
Baron 1994 Chrysler LeBaron convertible 183 V6 4-speed automatic

85lebaront2

Re: Re-wiring 1986 EFI Questions

Administrator

In reply to this post by Gary Lewis

Let me look
Pin 8, 276, BR color, FPM (Fuel pump monitor) Changes to 238, DG/Y same function in 1990
That is not the only difference.

I found him a repair EEC connector in Europe so he will be able to wire it accordingly.

Bill AKA "LOBO" Profile

ReneH

Re: Re-wiring 1986 EFI Questions

In reply to this post by Gary Lewis

Ok...I have done the same...

85lebaront2

Re: Re-wiring 1986 EFI Questions

Administrator

In reply to this post by ReneH

Rene, there is a list of Ford acronyms on the site, but KS is Knock Sensor, and is pin #23 on 1985-1989 EECs. In 1990-95 it changes to 310 and is a different color.

Bill AKA "LOBO" Profile

ReneH

Re: Re-wiring 1986 EFI Questions

Ok, Gary. As I use a 1989 ECU of the 351W, the changes in 1990 should no problem for me.

I only haven't found the KS pin in the spreadsheet of the 5.8l in the column 1989...

In this spreadsheet the pin 23 isn't assigned in the column of the 1989, 5.8l.

All other things, that seems to talk about, I have posted before...

Gary Lewis

Re: Re-wiring 1986 EFI Questions

Administrator

Rene - I'm not quite sure where this stands.

I see on the 5.0L tab that in '86 pins 19 & 20 were for the knock sensor. But apparently the 5.8L in '89 didn't use a knock sensor as there's no Circuit 99 nor a listing for a knock sensor.

And, by the way, I've updated the website to show Bill's latest spreadsheet. Plus I've added a link to the Standard Wire & Color Code Chart, which has the circuit #'s, wire colors, and what the circuit is used for.

Bill - Was there an acronym page I was supposed to provide a link to as well?

Gary, AKA "Gary fellow": Profile

85lebaront2

Re: Re-wiring 1986 EFI Questions

Administrator

I thought there was one, but apparently not. I will do a separate spreadsheet with them so it can be either attached to the pinouts or linked what ever works best.

Only the 5.0L engines used a knock sensor, no others had one and the 351 EEC will not see the input as it isn't configured for it.

Bill AKA "LOBO" Profile

Gary Lewis

Re: Re-wiring 1986 EFI Questions

Administrator

If you do a separate sheet with the acronyms I can add it to the other spreadsheet as a tab. That plus the wire color/circuit chart should be a big help.

Gary, AKA "Gary fellow": Profile

ReneH

Re: Re-wiring 1986 EFI Questions

In reply to this post by 85lebaront2

Hi Bill.

OK, so I don't need it anymore. I have checked the spreadsheet of the 5.8l on the website again.
No changes to the version I have downloaded. So I have done a conversion-table for the 5.8l ECU
in my car.

As I don't know how to embett an Excel-File, I will send a photo after this post.

In my opinion, the 1989 ECU will work with my engine and sensors better than my original 302.
If there was no knock-sensor used in the other engines, there may no use or advantage for it.
So, I will remove the sensor as well as the four solenoids below the vacuum reservoir.

I have seen that Pin 30 and 38 are seems to be the same? Do I need to connect both or is it enough to connect the Neutral-drive-switch to Pin 38 (Circuit 199)? Pin 30 has the same description with "NDS / MLP", but with different circuits. In case of Pin 30: 481*/912.

The list with the acronyms will be very helpful for me.

ReneH

Re: Re-wiring 1986 EFI Questions

Here it is.

Green color means: power cable
Blue: shielded cable for ignition signal.
Rest: 25 wire cable into my cable distributor inside the engine bay.

Gary Lewis

Re: Re-wiring 1986 EFI Questions

Administrator

Rene - Thanks to Bill the acronyms are now in the pinout spreadsheet on a new tab.

Gary, AKA "Gary fellow": Profile

ReneH

Re: Re-wiring 1986 EFI Questions

I have seen it. Thanks very much for this, Bill. I will update my list from above.

I will ask a UPS agency about the price if I let pick-up the connectors from you.

Can you give me at least your city, state and zip code? You can send it to rh@silence-lights.de

I also can send a UPS label to you, if it is easier for you...

ReneH

Re: Re-wiring 1986 EFI Questions

This post was updated on .

Ok. Here is my pin-out:

So, I think this should work. I don't have a canister valve, but I have enough cable to connect it. Maybe I can use this signal for another purpose.

So, what's about the HEGO? Do I need a heated one? Or does the passive one give out the same signal?

The other pins are clear to me, as far as I can judge this at this time. I will analyze the wiring harness and compare it to the schematic and the pin-out list. Maybe I will have further questions...

85lebaront2

Re: Re-wiring 1986 EFI Questions

Administrator

Rene' the reason for the heated one is faster warm up time. On the 1985-86 models it was in the rear of the right side exhaust manifold. If you have it down in the exhaust pipe or down in a set of headers, you need a heated sensor. Ford uses a Bosch narrow band sensor, which is something else you should be able to find fairly easily. Heater on the pre OBD-II vehicles was a straight 12V from the backup lamp fuse (#5) it is a Purple/Orange wire on 1989 trucks. The other side is grounded as is one side of the actual sensor.

Bill AKA "LOBO" Profile

ReneH

Re: Re-wiring 1986 EFI Questions

Hi Bill,

as re-constructing my exhaust, I have placed the threat for the O2-Sensor in the downpipe on the passenger-side. The cheapest way to get the sensor for me is still rockauto.com.
rockauto

Is this the correct one?

Maybe I'll be able to send it to my address in the USA that I have send to you and save shipping cost. I'll check if they are offering a combined shipping from different sources...

85lebaront2

Re: Re-wiring 1986 EFI Questions

Administrator

That should work just fine. Now that adds a connector I need to find for you, the mating one for the O2 sensor.

Bill AKA "LOBO" Profile

ReneH

Re: Re-wiring 1986 EFI Questions

Ok. Then I will order it.

Thanks for the offer, but I don't need a connector for it. I will add a better cable and route it to my distributor inside the airbox where formerly the heat exchanger of the air conditioning was installed. Inside this distributor box I also do the wiring of the injectors.

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