730 speed sensor

[Daniel]

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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