Xantia speedo

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Matthew Maddock - 18 Sep 2004 22:37 GMT

Hi all,

I have this really annoying problem with my Xantia.

I have an electronic speedo which, although at the moment is mostly
working, it occasionally does not!

When it stops working, the needle occasionally "plips" up to the correct
speed. When it is not working, neither the speedo or trip work - hence
it must be a lost signal to the instrument panel.

I have had 3 new dashboards in it now, and concluded that it is not
that !! Second one did not work until I ran a soldering iron over it
(although I think that may be a coincidence now!) third one worked
straight away, but now works intermittently.

I have replaced the gearbox transducer, tried to follow the wiring through
the vehicle (although got lost through the bulkhead and in the dash)

Could I be really unlucky with the 2 additional dashes I bought, or does
anyone know a weak point in the wiring I can look at?

Thanks for any help

Matt.

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VTR16V - 19 Sep 2004 03:17 GMT

Use the Haynes manual to check te wiring with a multimeter for breaks.
It may take some time to study and read before you really understand the
color codes and harnss codes of the electrical diagrams in the Haynes
manual.
This of course dependt upon your knowledge of electronics and diagrams.

Let me know if you don't have the haynes manual, I can provide you a link
where you can download it. Just send me an email.

Good luck.

> Hi all,
>
[quoted text clipped - 21 lines]
>
> Matt.

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Rob Beech - 18 Oct 2004 00:56 GMT

> Hi all,
>
[quoted text clipped - 23 lines]
>
> It seems silly but. Try the ignition switch.

This controls so many of the electrics on the xantia.

Everytime i start mine up i need to fiddle the the ignition barrel slightly
to get the heated rear screen/ heater / radio / horn/ speedo / elec windows
etc. to work. its not a major job just turn back and forth slightly (being
careful not to run the starter motor whils the engine is running*)

* - On most vehicles there is a safety device which stops you doing this. on
the xantia (mine at least) there doesn't seem to be this.

Rob

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Matthew Maddock - 19 Oct 2004 22:27 GMT

>> It seems silly but. Try the ignition switch.
> This controls so many of the electrics on the xantia.
[quoted text clipped - 6 lines]
> (being
> careful not to run the starter motor whils the engine is running*)

For some reason the speedo is working all the time now! (For no
apparent reason)

However your post is interesting because I do recall not being able to use
the heated rear screen, but I tried it the other day and it has started to
work,
I had not connected the two! I knew there was a link to the heater blower
from the ignition because the link had melted in the past and I had to
replace
it to get the heater blower working.

I'll have a mess with the ignition should things stop working again!

Cheers,

Matt.

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Frank Kemper - 20 Oct 2004 16:10 GMT

"Matthew Maddock" <news@plsnospam.mmaddock.com> haute in die Tasten:

> I'll have a mess with the ignition should things stop working again!

If your rear window heater does not work, this is quite a certain signal for a damaged
ignition switch (the thing you stick and turn your key in for starting the car). The
ignition switch is said to be a weak spot of the Xantia.

Frank

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