Jim, Bill
Thanks for the note re the spares supply Bill, I may well need it,
although the engine is running pretty well so it's not a case of
fixing something dead. It just doesn't feel quite right.
Jim, the car is H4 GTX which people seem to know about. (It's
currently white, although it was once yellow it seems.)
The ECU is behind the glove box. Nearby are the air bag controller (no
air bags so I assume this is just to keep the management stuff happy),
and the immobiliser box (brown plastic). I took a photo of the ECU and
it looks just like the ones on e-bay (it looks a bit like an
over-sized hard drive), though I cannot see the connector end so
haven't confirmed the ident code. So I think I have located the right box.
From your comments, would it be sensible to swap the original ECU with
a Mondeo unit? If so which one? Ideally I'd want to be able to have it
programmed - the car has non standard manifold and exhaust, no cat,
modded inlets, and that's just what I can see. Unless it has been
tweaked (of which I have no evidence, so I'm assuming not), it can't
be running as well as it might and I've read the 1.6Si settings can
blow the 2L engine, though I suspect only if you get on to a track and
push hard!
That said, I assume any compatible ECUs would not have the programming
ports either.
Your expert comments are really appreciated!
I'll check out the MAF and injectors tomorrow.
Julian Coleman
City Audio Services
----- Original Message -----
From:
[email protected]
To:
"[email protected]" <[email protected]>
Cc:
Sent:
Wed, 20 Dec 2017 16:07:52 +0000 (UTC)
Subject:
Re: [Quantum Owners] H4 EFI ECU
If you need a replacement ecu, turbobreakers may be able to
help....this is their flEbay user name.
Bill
On Wednesday, 20 December 2017, 15:28, Jim Hearne
<[email protected]> wrote:
Yes, the diagnostic port is just a 3 pin connector, usually in
loom across the rear of the engine bay.
There is also often an identical connector that is for the octane
adjusting plug.
If you find a 3 pin connector with a plug with a loop of wire
connected into it, then that is the octane plug.
Not that it will help you much as it’s pre OBD standards and will
only work with a specific diagnostics code reader.
You can get the codes out with an led and switch but it’s fun
counting the flashes.
The mondeo Ecu’s are still around and you are lucky your H4 is
based on a 1.6SI as thats the only Fiesta loom that is pin
compatible with the early Mondeo 2.0 ecus.
While you are in the engine bay see what the part number on the
MAF is and what colour the ring on the rear of the injectors is.
Just noticed you mentioned the ECU is above the glovebox, are you
sure thats not an alarm control box, the ecu is under the drivers
side of the dash (unless yours is LHD) , next to the door pillar.
Is your H4 Blue ?
Jim
*From:* Julian Coleman
*Sent:* Wednesday, December 20, 2017 3:18 PM
*To:* [email protected]
*Subject:* Re: [Quantum Owners] H4 EFI ECU
Jim
That's really helpful, thanks.
I've since been told that the diagnostics port, if it has one, is
not part of the ECU itself but separate and can be located just
about anywhere.
Your comments re the ECU being compatible are really interesting.
I guess it raises the question as to what the best solution is.
I'm guessing finding an appropriate 2L ECU is not as simple as it
sounds. But step 1 is finding out what is in there!
Regards
Julian Coleman
City Audio Services
----- Original Message -----
From:
[email protected]
To:
<[email protected]>
Cc:
Sent:
Wed, 20 Dec 2017 14:40:31 -0000
Subject:
Re: [Quantum Owners] H4 EFI ECU
You just need to undo the clamp from under the dash.
Then, in the engine bay undo the M10 bolt in the centre of the
big connector and the ecu will drop down into the car.
The 2.0 won’t run very well with a 1.6ecu as the 2.0 has a
different MAF and injector size.
But that’s the next step , first find out what the ecu is, you
are looking for a 4 letter code that usually spells a word.
I think GURU was the 1.6si code and DEEP, DESK and another 4
letter word begining with D were the 2.0 Mondeo ecus
Jim
*From:* Julian Coleman
*Sent:* Wednesday, December 20, 2017 2:15 PM
*To:* [email protected]
*Subject:* [Quantum Owners] H4 EFI ECU
Hi
I'm attempting to get to grips with an H4 which has a 2L Zetec
but I believe run by an original ECU for a 1.6 Zetec (Mk3 Si).
I have found the unit, up behind the glove box where it's not
too easy to get at and I cannot see any labels. I need some
practical advice as to how to gain access - I can't actually
see what is going on up there.
I think I can probably loosen the clamp bolt. But what happens
if I do? Would the unit drop out with its wiring attached?
Where would the diagnostic port be?
Any other info would be gratefully received.
Regards
Julian Coleman
City Audio Services
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