Sorry, typo: equation should read 1000rpm = 15.5mph (=25km/h)
> -----Urspr|ngliche Nachricht-----
> Von: Kvppe, Thorsten
> Gesendet: Freitag, 4. Januar 2002 12:58
> An: '2000-register@autox.team.net';
> '2000-register@yahoogroups.com'; 'triumph_2000@yahoogroups.com'
> Betreff: jumping tacho needle
>
>
> Hello & a happy new year!
>
> After receiving a used windscreen from someone in southern
> germany and having it fitted by professionals just in time
> for the christmas holidays my family and I were able to drive
> a thousand miles to visit friends and relatives without a problem.
>
> Only one thing (that I already forgot) is a little annoying:
> During these (mainly autobahn) rides, when driving between
> 60-70mph the tacho needle jumps (or waves) around from
> 2000-6000rpm. At lower and higher speeds the tacho reads what
> it should (i.e. 1000rpm = approx. 25mph in top gear, BW35 auto box).
>
> This phenomenon arised when I replaced most of the ignition
> parts last summer, including changing the coil from a 12v
> Bosch to a 12v Lucas Gold and cutting out the balance
> resistor (to which the Bosch coil has been connected) and the
> ignition leads to 'high performance' leads.
>
> The tacho is not OE but an aftermarket VDO unit which is
> mounted to the passenger sides parcel tray.
>
> Any ideas, what causes this behaviour?
>
> Best regards,
> Thorsten
>
> 1971 2000 Mk2 Estate
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