747 Timing Connector and misc questions

[Bruce Plecan]

-----Original Message-----
Subject: Re: 747 Timing Connector and misc questions


>Bruce Plecan wrote:
>
>> Not having totally gone thru the 747 code I acn't say this with
>> absolute
>> accurracy, but quit often there is an enleanment strategy for
>> deccleration.
>
>I was under the impression that the ECM knows the engine deceleration
>time under no-load conditions, when the vehicle is decelerating the
>engine decel would be slower, that coupled with the TPS (throttle being
>closed) contributes to the enleanment.

>From what I understand it's based on VSS.
>
>> At incoming 332 there are two items you might want to read before
>> ya go to far, about tuning.  Fuel, and timing go  hand and hand.
>
>I read the tuning document I will have to look for the other.
>
>> Right place, now try timing spark tuning maps tables fuel 747 1227747,
>> vss,
>
>Ok, Ill start that tomorrow
>
>> then time available read em start to finish a couple
>> times.
>
>already started that, got to the middle of 97 right now
>
>>   If you want to come to better terms with some of the tables names
>> switchs etc, try syty,
>
>what is syty?

www.syty.org, lots of chip info.
>
>> and be sure to get promgrammer and read it closely many times,
>
>what / what is programmer?

pro M grammer, it's the editing program for the syty proms for the 749
ecm.
>
>> and then the treprom at gn.
>
>again what is treprom? what's the URL for gn?

Again prom info, but this time for the 148 ecm.
HTTP://ni.umd.edu/gnttype/www/buick.html
>
>Bruce,
>    Thanks for all help, really appreciate it.
>
>--
>Jason Weir - 88 YJ - 258 / Howell TBI  145K and counting
>Fayetteville, North Carolina
>JTW Web pages at http://home.att.net/~jweir
>mailto:jweir at worldnet.att.net
>