Speedometer programming

[Gregory OConnor]

Don, That is a good point because the Trans shift points may have
been off the BB engineered intentions due to the 20% error in the
speed factor. Thank you for the followup
GregoryO'Connor
94ptRomolandCa

--- In WanderlodgeForum@yahoogroups.com, "Don Bradner"
wrote:
>
> A followup on the speedometer: Mine was set for "10" (2+8), and the
factory called for 26 - switches 2,3 and 6 which are 2+4+20. I set
that, and it still read substantially high. I set 40 (switch 7 only)
and the speedometer was about 20% low. Set 34 (switches 3, 5, 6,
which is 4+10+20), and I was 5% low, then 32 (switches 2, 5, 6) and I
was essentially dead on.
>
> This was done over a trip of 150 miles today, and during it I also
set my digital VMSpc speedometer to dead on - it was 1.8% fast over
10 miles of flat desert at exactly 60mph. I now have two accurate
speedometers, analog and digital.
>
> From this I conclude that the dip switches are additive, as shown
above, and the higher the combined number the more they take off the
speed.
>
> In the various invoices I have with this coach are two for
transmission ECU replacements, with the symptom being initially a
lack of any speedometer reading at all, and the second a couple of
days later when the "new" replacement failed completely. The shop
which replaced both (second under warranty, of course) noted that
they could not get a second identical one either new or reman, so
used a reman "+2" unit.
>
> I don't know what that means, but I assume it is somehow different,
and probably doesn't put out the same speed data as the original,
which is why factory programming didn't work.
>
> On 2/4/2007 at 3:45 PM Don Bradner wrote:
>
> >The speedometer on 90 PT40 reads roughly 15-20% high. Presumably
racks up
> >miles at a higher rate as well.
> >
> >The VMSpc speed reading appears to be just about dead on; I would
like to
> >improve the accuracy of the speedometer, and I wondered if anyone
here has
> >any info on the programming?
> >
> >On the back are 12 dip switches. 1-4 are labled "Ones" and 1, 2,
4, 8. 5-8
> >ae labled "Tens" and 10, 20, 40, 80. 9-12 are labeled "Filter."
> >
> >Only 2 and 4 are on (values 2 and 8).
> >
> >This is an obvious question for Bluebird tech support, but so far
on other
> >issues I'm batting .000 with them (meaning I have yet to talk to a
human)
> >so I thought I would ask on the forums first in case someone has
> >previously received programming info.
>
> Don Bradner
> 90 PT40 "Blue Thunder"
>