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

Bob Valentine bob at tecmark.com
Fri Mar 9 22:58:25 GMT 2001


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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