730 speed sensor

[Dave Zug]

I had a go-round with some detail with this stuff a short time ago.
http://www.delanet.com/~tgp/92Z28/02-730-vss4T56.html

thanks to a large quantity of chip burning over a few days I got it close..
then list archives and a couple folks' help rounded out the details. I still
have a bit of info to put on the page, but it will give you some more to
ponder.  be sure to read it ALL, later text points out misrepresentation in
earlier text so beware.

-Dave Z

89 Iroc - '730 - 383 large tube MAP TPI, ZZ3 cam ,dry NOS 50 shot.
12.79 @106 / 12.08 @ 112.   www.delanet.com/~tgp
92 25th annev convertible  305 / T56.  268 mph in a perfect vacuum.
----- Original Message -----
From: Daniel <bossute at iprimus.com.au>
To: <gmecm at diy-efi.org>
Sent: Saturday, July 14, 2001 1:41 AM
Subject: Re: 730 speed sensor


> Thanks Bruce and Bob , I got the VSS to at least work now  , I was unable
to
> get a magnetic VSS after all so I used a hall effect and changed the bit
> @C0018 to suit .
> It is now working although the VSS constant is out due to the VSS having 8
> pulses per revolution and I have a very low TCC lockup.
> looking at the $8D hac it seems that the correct bit to change would be
> @C0015 ? - what I am now looking for is the correct equation to put into
my
> $8D TDF but having no idea what the original number is I am a bit lost
>
> My best guess is that the original constant is 4006 (921600 / 230) , will
I
> be able to scale it up enough to get the tcc somewhere close or should I
> lift all the TCC mph setting up ?
>
> My only other option is to use a 2 pulse reed switch - will the 730 accept
a
> 12v on /off signal direct to C6 rather than a hall effect.
>
> Daniel
>
> ----- Original Message -----
> From: "Bruce" <nacelp at bright.net>
> To: <gmecm at diy-efi.org>
> Sent: Sunday, July 08, 2001 10:07 PM
> Subject: Re: 730 speed sensor
>
>
> >
> > Nope.
> > The optical sensor uses C-6 as an input, and in the AUJP (8D mask) cal.,
> > 0018 must be changed from D8 to 98.
> > The 8D mask BCC are all for the magnetic set up
> > Bruce
> >
> >
> > From: "Daniel" <bossute at iprimus.com.au>
> > Subject: Re: 730 speed sensor
> > > Thanks Bob
> > > Do they both wire up to pin B9 and B10 ?
> > > What BCC is the magnetic for a 350 ?
> > > Daniel Collins
> > > bossute at iprimus.com.au
> >
> > > From: "Bob Valentine" bob at tecmark.com
> > > Subject: Re: 730 speed sensor
> > > > The stock setup used either a 4000ppm (4 pulse/rev) magnetic or
> 2000ppm
> > (2
> > > > pulse/rev) optical VSS.  Calibration determines which is used.
> > > > -> Bob Valentine
> > > > -> bob at tecmark.com
> > > >
> > > > At 02:38 PM 7/8/2000 +0800, you wrote:
> > > > >I am trying to find out how many pulses/rev the 730 ecm requires
and
> if
> > > it
> > > > >is a magnetic sensor or a hall effect type ?
> > > > >The truck has been converted when it came into Australia but no one
> > > bothered
> > > > >to fit a VSS adapter so TCC doesn't work and the idles not real
good
> on
> > > > >deceleration.
> > > > >I can get a 8 pulse magnetic inline VSS but wasn't sure what the
730
> > > > >requires
> > > > >
> > > > >Daniel
> >
> >
>
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