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Re: VSS ?

Pretty sure it's ARHT, 5 speed/350.  I burned a bunch of base cals
with the injector constant correct for my engine, then idled the
engine and listened to each one.  I picked the one that ran best,
renamed it, and that's where I start from.  Tonight's calibrations
cured most of the leanness on medium acceleration, but I put too much
fuel into it at low rpm/ low map.  First time I've heard a tbi diesel.
: )

Back to the VSS, can't wait to get it installed and get highway spark
enabled.  I used to get 16-18mpg with the old ecm, now I'm down to
about 1/2 that with the 7747.
Shannen

Bruce Plecan wrote:
> 
> That would have to be it.
> What base BCC are you running?.
> Grumpy
> 
> > Funny, this is the second year that I've run my pickup sans VSS.
> > Mebbe because it's manual tranny equipped helps.  Dunno, but the
> > sensor is in a box under the seat and maybe I'll get to install it
> > this weekend.  If so, I'll watch for new behavior.
> > Shannen
> > Bob Valentine wrote:
> > > I was just reading this in the archives last night.... go there for the
> > > full details.
> > > Yes, you need one.   Will "run" without it, but all sorts of things from
> > > error codes to decel stalls to erratic curb idle will happen.  I think
> the
> > > 747 is 2000ppm.
> > > -> Bob
> > > At 04:09 PM 7/6/2000 -0400, you wrote:
> > > >Does anyone have information / experience with the pros and cons of not
> > > >having a VSS on a TBI system using the1227747 ECU?  I have heard from
> some
> > > >that say you need it; others say you don't.
> > > >In the event VSS needs to come to a car near me, does anyone know many
> > > >pulses per MPH are required for this system?
> > > >Thanks,
> 
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