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Re-wiring 1986 EFI Questions

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ReneH

Re: Re-wiring 1986 EFI Questions

So it takes shape...

So this is my "small" M32 cable gland...

Here is my injection and O2 sensor distribution. Every injector has its own cable.

This is my distributor box for the ECU.

This is my shielded cable that goes directly to the distributor.

I have set the EEC realy outside beneath the fuel pump relay. It's easier to wire for me.

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

Gary Lewis

Re: Re-wiring 1986 EFI Questions

Administrator

Looking good, Rene! That is really clean and organized.

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

ReneH

Re: Re-wiring 1986 EFI Questions

Thanks Gary!

I hope it will also work as good as it looks...

85lebaront2

Re: Re-wiring 1986 EFI Questions

Administrator

In reply to this post by ReneH

Very nice! Should be a huge improvement on the wiring.

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

86 1/2 Brutus

Re: Re-wiring 1986 EFI Questions

Very very nice job so far. very neat

Nick and George
1986 1/2 F150 XLT Lariat 4X2 300 Six - C6 - 3:08 in a 8.8 - Fully Loaded - 8 Foot Box
Owned since new

ReneH

Re: Re-wiring 1986 EFI Questions

This post was updated on .

In reply to this post by 85lebaront2

Thanks!

Yesterday I have done a short night shift.

Grounding is important

Also found a new position for the coil

It also got GND, don't know if necessary, but it won't hurt anyway.

ReneH

Re: Re-wiring 1986 EFI Questions

So, I'm back...here you'll see today's work...

My new fuse and relay box:

Fits 11 fuses and 6 relays.

One of Bill's connectors that I've got from him:

Is this the connector for the fuel pump inside the tank?

85lebaront2

Re: Re-wiring 1986 EFI Questions

Administrator

Rene' that 3 wire connector goes to the MAP (Manifold Absolute Pressure) sensor which was originally in the area behind your battery, near the solenoid valve collection. In 1987 Ford moved it to the top of the AC casing, in towards the wiper motor.

The yellow pair is part of the fuel pump(s) power circuit, if you look at the fuel delivery part of the 1986 EVTM on the site you should be able to find it.

I did find a later harness with the brown and green relay sockets, but I would just change to the standard Bosch cube relays as they are much easier to find both in Europe and here.

Bill AKA "LOBO" Profile

ReneH

Re: Re-wiring 1986 EFI Questions

Hi Bill.

Thanks. I only want to show how I have modified the wires of the connector, you've send to me...

About the fuel pump power circuit connector...Thanks for the information.

And about the relays: I have also changed, as you have recommended me before. I will see for what I can use the other relays in the future. Currently I only connect two of six (fuel pump and EEC). I will also post next time for what I'll use the 11 fuses...

Tomorrow I will mount the shielded cable gland and route the shielded cable to the distributor.

Maybe I have first to mount my air filters to see how's the best way to route the cables from the sensors in the engine bay...

85lebaront2

Re: Re-wiring 1986 EFI Questions

Administrator

You are doing some very nice work on it! I am just glad I was able to help you with it.

Bill AKA "LOBO" Profile

Gary Lewis

Re: Re-wiring 1986 EFI Questions

Administrator

Yes, it is really looking good!

Gary, AKA "Gary fellow": Profile

ReneH

Re: Re-wiring 1986 EFI Questions

Thanks for the roses!

Today I've worked for 7 hours...but it's such a day, you don't see what you have done...

Does anyone have another dip stick? Maybe a straight one?

ReneH

Re: Re-wiring 1986 EFI Questions

Ok...it's under the week...but today I also got some progress...

Can someone tell me what theat size this is?

I don't like those plugs...I prefer to screw them....

mat in tn

Re: Re-wiring 1986 EFI Questions

i believe those senders have size 10 /32 threads per inch

ReneH

Re: Re-wiring 1986 EFI Questions

Thanks for this. I have bought em and hope they'll fit...

Today's progress of three hours:

slowly the squirrel feeds...

ReneH

Re: Re-wiring 1986 EFI Questions

In reply to this post by 85lebaront2

Hi Bill, I found some pins in your pin-out list, which is my base, for that I don't find the circuits in the schematic of the EEC-IV.

Pin3: VSS+
Pin8: FPM
Pin31: CANP

Pin30 and Pin38 seems to be the same?

I have measured GND (e.g. Pin40) to EGOG (Pin49)...no connection.
Is it possible That the ECU can switch the heater on and off? I have measured the connection between both pins with no power applied.

I also have forgotten to show my version of the SPOUT inside the car. So no connector that can fail inside the engine bay:

85lebaront2

Re: Re-wiring 1986 EFI Questions

Administrator

Pin #3 on either the 5.0 or 5.8L EEC-IV 1987 up is indeed VSS+ (Vehicle Speed Sensor signal high) this was not used on 1985/86 systems. If you have a speed control it has one in the speedometer cable. If not, they were commonly integrated into the speedometer drive.

Pin #8, FPM is Fuel Pump Monitor, it tells the EEC the fuel pump is receiving power
Pin #31 is Canister Purge, Evaporitive system canister purge to the intake manifold
Pin #30 is for the automatic transmission neutral position sense
Pin #38 is for the E4OD transmission Electronic Pressure Control solenoid.

Nicely done on moving the Spout connector where it is protected.

Bill AKA "LOBO" Profile

ReneH

Re: Re-wiring 1986 EFI Questions

Hi Bill,

Thanks for the answer. So this means as I don't have a speed sensor, i don't need this pin. My speedometer is mechanical...

It seems I also don't need the pin number 8, cause it wasn't connected before...

I also seem to have no use for pin 31, currently...

Regarding the transmission, I seem to only need the pin 30, cause of using a C6 gearbox.

What do you think about the EGOG pin?
Is it possible That the ECU can switch it on and off?

85lebaront2

Re: Re-wiring 1986 EFI Questions

Administrator

EGOG is Oxygen sensor signal ground. Your original 1986 EEC had it, the orange wire to pin #49. On the 1985/86 systems it was connected to the rear right side intake bolt as it had a stud on it. Using a heated sensor, there is still a signal ground but it is part of the O2 sensor wiring.

Bill AKA "LOBO" Profile

ReneH

Re: Re-wiring 1986 EFI Questions

Ok, I understand...
So this means, I will connect the heated O2 sensor to any ground point, to the ignition run and to pin 29.

Pin 49 will be also connected to any GND point in my wiring.

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