logitech

hi does anyone know how i can identify that the loom i have bought is a fiesta rs turbo loom the part number on the loom is 90-fg14014-cb much apreciated

Cameron

Pin 6 goes to the oil pressure switch instead of the original mfi wiring for the pressure switch? Dont get how that would be connected to the light on the dash?

Cameron

Can anyone help me here ive wired it up as per the diagram, but now have no battery or oil pressure light when i switch the ignition on, is this right? also do i wire pin 6 to the oil pressure switch aswell as the original mfi wiring from pressure switch to instrument panel?

Also can the Amal valve from the escort still be used? or is it wired into the old mfi ecu? i presume you can just blank the outlet off that went to the metering unit?

martinmilne

done the efi conversion on my cab ofac with full efi loom but not gettin a reading on rev counter any ideas its efi clocks

Dennis_Wiseman

iTrader: (1)

Do mk4 Escorts have a seperate engine to car multi-plug or are they hard wired in?

Basically do you have to wire things up car side (as per 1st wiring diagram page one) to a female multi-plug so it fits into the ofab engine loom plug?

mentalasanything

I can't remember where the rev counter is fed from on a full EFI loom with EFI clocks, I believe it's fed from one of the coil outputs. Trace the green cable from the back of the clocks to ensure there are no breaks. Alternatively, pin 11 of the EDIS4 module is a Clean Tach Output, this can be used on standard clocks.

MK4 Escort looms are all one piece looms. You will have to remove the tape and cut out the engine loom sections and add a female multiplug to take the FRST loom. Alternatively after cutting out the engine loom, hard wire the FRST loom in its place.

Lee

Dennis_Wiseman

iTrader: (1)

Cheers mate.

Do you know if female Zetec multi-plugs are compatible with the male OFAB one? or will it need to be a FRST one?

stafcio

should there be any voltage (1,5V) coming out of pin 5 & 6 on edis to CPS?

stafcio

i found it my self. there should be 1,5V
if you're doing conversion make sure pins to cps are correct.
my mfi to efi is success.

beaver rs 88

when converting using the frst loom where do you put the fuel relays? behind the dash or in the engine bay?

mentalasanything

Anywhere you like. You might as well put them behind the dash though.

Lee

zxevhbonus

hi to start with this is a great thread now i have just got a xr3i efi loom to run my 2.1 zvh escort bonus now when i got the loom the fella said it was running ofab but i have had a look at the loom and no pin canges have been made the only thing i can find is that a brown wire near the inlet manifold is cut the fella i got it from said if you connect it the car will not run dose this make any sence would ofab run it because this wire is cut

T555DAN

Sorry if this has already been asked but if I bought an EFI xr3i would I have all the parts required to do the conversion
Cheers

Volkov

Hi!

Is there anybody, who's car is working NORMALY with the publicated OFAC (0FAC) pinouts?

I've done everything step-by-step. Checked 100x times, but the car always had error code 59: CO potentiometer error. (poor or no idle, etc)
It was usable, and powerfull, but sometimes it was very anoying.
After 2 years s@&#ing it's clear why!

The "27, Brown – CO adjust potentiometer" it's realy pin8 on OFAC to!!!
So the 1AFA and OFAC (0FAC) are NOT the same!

Changed that pin, and all my problems gone!
Fault code reading: code 11= Full system pass.
Got fix 950 rpm idle!


Cheers,
Andras

Mrparry1984

Ok I know this is a Mfi to efi, but I'm putting a frst engine into a mk3 which was a 1.3, I've bought a full loom including ofab ecu but do I have to change my clocks and or my original loom?
I'm not fussed about a rev counter as I want it to look 1300 inside. But will it still work if I just use the engine/ignition, and fuel sections.
Don't get me wrong I know it's not gonna be the easiest thing but I'd rather know what extent I need to undergo.

Thanks lee

stafcio

when installing ACT from FRST should i use the same wires that are in act mfi plug? when engine is running and i unplug it, revs go down is it correct?

chalkey

where do all you guys mount the ecu on your conversions? im just about to convert to ofab

fsteward

i have ofab loom ecu and map sesor and edis4 im not useing !!!!

chalkey

hi bud

im only missing the map sensor and co pot now

mentalasanything

Afternoon all!

It's been 4 years since I wrote this thread and today I finally got it running!

It didn't go without a hitch so I will update the original post with all of the troubleshooting steps. But the end of the tunnel is now in sight!

Cheers,

Lee

stafcio

wow, 4 years. nice result

i still have some fuel issues, but i'll wait until you update the thread.

mentalasanything

Updated today with pin changes required on some looms

Lee

mentalasanything

Edited to update: Pin 11 of the EDIS (CTO) didn't work with my rev counter. I've had to use the diode circuit.

Lee

Dennis_Wiseman

iTrader: (1)

Where do you mount the ECU as it won't stretch to inside the car ?

mentalasanything

I'm not sure where people mount it when using the Fiesta loom but using the '3i loom it goes behind the centre console under the radio.

Lee

Dennis_Wiseman

iTrader: (1)

Yeah i managed to get a 3i ecu bracket expecting to mount the Fiesta ecu inside the car but when the Fiesta loom arrived, no chance lol


Anyone know?

Turbo Al

iTrader: (1)

this may sound silly but on rabs diagram he has the engine plug showing wires going to 8 pins, is that the ecu plug he is talking about? if so is it the first 8 pins?

i have full frst ofac loom

cheers

mentalasanything

Hello mate,

No, the 8 pins are the pins on the FRST engine loom connector not the ECU

Lee

marky_g

Brilliant loom advice I'm using a late spec 3i car and it just won't fire gonna check the pin location the weekend woohoo light at the end of the tunnel finally

stafcio

hello guys,
i am after all the conversion. everything is working but i'm not sure if correctly.
should i have some kind of a chip or stand alone mounted? T3 is bigger than standard T2 (ecu is from frst - 0fac). so it might blow more air and afr is lean. am i right? this can cause overheating.

did you check afr after this conversion?
is it possible to get afr right without any chip or SA?

marky_g

Would the pin changes that Karlos mention make the car not run at all?

Turbo Al

iTrader: (1)

Ive probably read through and missed the answer to this question. Im using the frst loom and rabs diagram shows the 8 pin plug to wire to the car, the loom has a 8 pin plug with 8 wires just at the inlet manifold and a 8 pin plug with 7 wires which joins to the fiesta car loom which I would say goes to fuse box etc.

Am I right in saying I need to wire from this plug and add an aditional pin?

Turbo Al

iTrader: (1)

Forget that, just looked at the diagram closer. My bad

Turbo Al

iTrader: (1)

its alive

cheers for the info lads

mattxr2

i was wondering if anyone could help me i have a mk2 fiesta which i have converted to efi turbo with 195 chip, cozzie map sensor, beige 701's, adjustable fuel pressure regulater 1mm oversize pistons ect ect... i wired it all in friday following a diagrom off this thread and now i can get any spark. i havent currently got a vehicle speed sensor on the car, is this why? i tested the powers to the coil pack and the middle is live and wire no1 + 3 are a pulsing live but i thought they should be a pulsing earth, im a little lost as its my first conversion as im only 19 and its my first car lmaoo i was wondering if anyone had a pic of what the vehicle speed sensor looks like and what could be chanching the pulsing earths to pulsing lives ??????

mentalasanything

Don't worry about the VSS, that won't cause it not to spark. IIRC those outer pins on the coil harness are live until they pulse to earth. When they're not live are they earthed?

Lee

mentalasanything

Only just spotted this comment. Very unusual for OFAC to use pin 8 for the CO pot, in fact I've never heard of it. It's definitely 27 on mine.

Lee

mattxr2

no mate they are just a pulsing live they dont earth at all apart from when the ignition is completely off

mentalasanything

I'd hazard a guess that you have a bad earth. They should alternate between live and earth.

Lee

beaver rs 88

Do you need the vehicle speed sensor when you convert or do you leave it out?