1227727 INJ.DRV.

[Don.F.Broadus at ucm.com]

Some of the stuff  I have read says that they put the large fuses in the
system to handle 'peak ' current loads.
The HEI is a good example , even though I've never seen more than about 2.5
amps at max RPM on the bench
it is factory fused for 10 amps. An analog or digital meter would not
respond fast enough to see the peak current.
A current shunt or clamp on current probe connected to a scope would capture
the peak current signature.
 
Don  

> -----Original Message-----
> From:	Bruce Plecan [SMTP:nacelp at bright.net]
> Sent:	Thursday, October 19, 2000 7:17 PM
> To:	gmecm at diy-efi.org
> Subject:	Re: 1227727 INJ.DRV.
> 
> They will work for a while with insane loads, and then start to get
> erratic
> at high rpm, then will just work cold, and then not at all.
> I'd venture a quess that they slightly over rate the fuses so they aren't
> current limiting the normal operation of the injectors
> Bruce
> 
> > but the driver itself will handle 20 amps?
> >
> > Swayze
> > mswayze at truswood.com
> > kswayze at bellsouth.net
> > <8-{b>
> > ----- Original Message -----
> > From: "Squash" <realsquash at yahoo.com>
> > To: <gmecm at diy-efi.org>
> > Sent: Thursday, October 19, 2000 4:21 PM
> > Subject: Re: 1227727 INJ.DRV.
> >
> >
> > > Maybe it's because there are only 6 injectors vs. 8?
> > >
> > > Squash
> > >
> > > --- Swayze <kswayze at bellsouth.net> wrote:
> > > > I was looking at 1227727vette.zip jpegs last night and comparing
> them
> to
> > the
> > > > 91 lumina manuals I have so that I could be sure I wired up a
> harness
> > > > correctly (trying to map it out), and noticed that the injectors on
> the
> > > > vette 727 have a 20 amp fuse. The v-6 ones I have been looking at
> show
> a
> > ten
> > > > amp fuse. only thing on the circuits are the injectors and the
> drivers
> > in
> > > > the ECM.
> > > > question: is there a difference in the drivers on the ECM's between
> the
> > > > various 727's? if so, whats in the vette '727?
> > > >
> > > > byE
> > > > Mike
> > > > Swayze
> > > > mswayze at truswood.com
> > > > kswayze at bellsouth.net
> > > > <8-{b>
> > > >
> > >
> >
> >
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