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

[Programmer]

I haven't seen one for quite a while...perhaps the others can chime in...did
the
7 pin GM module have a vacuum advance delete ? Was that the easiest way
to ID it without pulling the cap ?

Lyndon.

-----Original Message-----
From: ae2598 at wayne.edu <ae2598 at wayne.edu>
To: gmecm at diy-efi.org <gmecm at diy-efi.org>
Date: March 9, 2001 7:52 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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