Possibly OT, ??s about a GM feedback Q-jet

[Scott Pearson]

I had ESC on my 82 Chevy truck and it didn't have vac or mech advance.

Scott

----- Original Message -----
From: <ae2598 at wayne.edu>
To: <gmecm at diy-efi.org>
Sent: Friday, March 09, 2001 9:08 PM
Subject: Re: Possibly OT, ??s about a GM feedback Q-jet


> Maybe "electronic spark control" is the wrong buzzword for this system.  I
> figred that if the spark was controlled electronically, then you wouldn't
> need a vacuum can and weights/springs!  The only distinguishing factor
> between  this dizzy and a plain-vanilla HEI is the 5-pin module and the
> extra wiring harness coming out the back.  If I have my way, there'll be
> NO distinguishing factors :)
>
>  On Fri, 9 Mar 2001, Programmer wrote:
>
> > Hmmm...with electronic spark control ? I know they used 7 and 5 pin
modules
> > throughout
> > those years....right back to the early 80's.
> >
> > Lyndon.
> > ----- Original Message -----
> > From: Bob Valentine <bob at tecmark.com>
> > To: <gmecm at diy-efi.org>
> > Sent: Friday, March 09, 2001 3:58 PM
> > Subject: Re: Possibly OT, ??s about a GM feedback Q-jet
> >
> >
> > > It uses a 5 pin module, have one here on my desk....
> > >
> > > -> Bob Valentine
> > > -> bob at tecmark.com
> > >
> > > At 07:59 AM 3/9/2001 -0700, you wrote:
> > > >I thought that ESC system used a 7 pin module ? I don't think the PCM
(or
> > > >ESC computer) is doing
> > > >anything anyways...I believe you jumper "A and D" on the 4 wire from
the
> > > >dissy to bypass the computer.
> > > >
> > > >Lyndon.
> > > >----- Original Message -----
> > > >From: <Chipsbyal at aol.com>
> > > >To: <gmecm at diy-efi.org>
> > > >Sent: Thursday, March 08, 2001 9:08 PM
> > > >Subject: Re: Possibly OT, ??s about a GM feedback Q-jet
> > > >
> > > >
> > > >> I'll try to help you here, it's been years since I've fiddled with
> > these.
> > > >First, you don't have a mixture control solenoid. That solenoid
actuates
> > to
> > > >enlean the accelerator pump shot when the ecm so desires. It can be
> > > >disconnected with no problems, except a persistant hesitation may
finally
> > > >clear up. The distributor is part of a ESC system. It can be
converted to
> > > >non-esc by disconnecting the four wire connector and jumping two
wires on
> > > >the dist side of the connector. Now here my memory gets a little
foggy.
> > If
> > > >you can tell me the colors of the wires and what position they are in
the
> > > >connector, I can tell you which two to connect. There is a green,
black,
> > > >brown and the last one. The truck won't run with the connector
> > disconnected.
> > > >I used to get quite a few no starts with this system. The customer
always
> > > >opted for the wire fix over the ecu replacement.
> > > >> AL
> > >
> >
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> > > >
> > >
> >
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