canister purge on 747

[Mathieu Blais]

ok, so does someone has made the CP system work using a 747 ecm, don't even
need to be with the computer.  I guess I could just retain the regular
system that the 84 pickup has right now(works with vacuum) and plug it to a
port somewhere on the TB unit?  I was just curious about that, because I
also have a 8746 and was comparing the ecm connector pins.  Thanks for your
info.

    Math B
    fireb76 at videotron.ca

----- Original Message -----
From: "Bob Valentine" <bob at tecmark.com>
To: <gmecm at diy-efi.org>
Sent: Friday, January 12, 2001 6:10 PM
Subject: Re: canister purge on 747


> I have a canister from a '88, 5.0 G20 van, '747 AMUN bin.
>
> Will send bin & wiring connections if you want it.
>
> -> Bob Valentine
> -> bob at tecmark.com
>
>
> At 04:33 PM 1/12/2001 -0500, you wrote:
> >
> >The '747 hardware supports canister purge. However, the software
> >does not. I do not know if the trucks even ran a canister. If so, maybe
> >get the setup they use.
> >
> >BobR.
> >
> >Mathieu Blais wrote:
> >
> >> ok, well trying to figure out couple of things now.  I was looking the
ecm
> >> electric diagram and can't seem to find any CP solenoid hooked up to
the
> ecm
> >> at all.  If there's any, then how does the fuel vapor purge is
controlled,
> >> by ported vacuum only, would be surprising because most use some
solenoid.
> >> A 5.0 v8 under a 747 shouldn't be using a fuel control module if I'm
not
> >> mistaking and there shouldn't be two input for the injector drivers?
> >>
> >> and maybe one other thing, my 747 came from a 4.3 v6 engine but will be
> >> going on a 5.0 v8 engine.  So if I understand correctly, I'll need to
> change
> >> the calpack ( I think that's the right term )  to a v8 one and the bin
(
> >> that won't be a problem).  Where can I get a calpack from, is it
> possible to
> >> get it at gm ( if anyone as the p/n, would be really appreciated ) or
can
> >> that be burned?
> >>
> >> If someone could send me a ecu file that would work for a 5.0 v8 manual
> 747.
> >>
> >> thanks for the help.
> >> Math B
> >>     fireb76 at videotron.ca
> >>
> >>
> --------------------------------------------------------------------------
--
> >
>
>---------------------------------------------------------------------------
-
> >To unsubscribe from gmecm, send "unsubscribe gmecm" (without the quotes)
> >in the body of a message (not the subject) to majordomo at lists.diy-efi.org
> >
> >
> --------------------------------------------------------------------------
--
> To unsubscribe from gmecm, send "unsubscribe gmecm" (without the quotes)
> in the body of a message (not the subject) to majordomo at lists.diy-efi.org
>
>

----------------------------------------------------------------------------
To unsubscribe from gmecm, send "unsubscribe gmecm" (without the quotes)
in the body of a message (not the subject) to majordomo at lists.diy-efi.org