canister purge on 747

[rr]

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
>
> ----------------------------------------------------------------------------

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