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Speedo not working #654040
03/08/20 03:32 PM
03/08/20 03:32 PM
Joined: Jun 2017
Posts: 6
R
Richard Baxter Offline OP
New to Talk Morgan
Richard Baxter  Offline OP
New to Talk Morgan
R

Joined: Jun 2017
Posts: 6
Speedo & milometer not working but indicator lights still are.

Any ideas ? I needed a new speedo sensor 3 years ago - could that be favourite again ?

Many thanks

Re: Speedo not working [Re: Richard Baxter] #654047
03/08/20 03:42 PM
03/08/20 03:42 PM
Joined: Dec 2008
Posts: 18,725
South Yorkshire
DaveW Offline
Roadster Guru
DaveW  Offline
Roadster Guru
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Joined: Dec 2008
Posts: 18,725
South Yorkshire
Which model and year Richard?

Is the sensor on the gearbox output shaft or the offside front hub?


DaveW
2005 Corsa Red Roadster S1
2016 Saffron Yellow (Narrow) AR Plus 4
Re: Speedo not working [Re: Richard Baxter] #654051
03/08/20 04:12 PM
03/08/20 04:12 PM
Joined: Feb 2018
Posts: 425
SW Iowa, U.S.A.
Bitsobrits Offline
Learner Plates Off!
Bitsobrits  Offline
Learner Plates Off!

Joined: Feb 2018
Posts: 425
SW Iowa, U.S.A.
Aren't all on the front hub?

Besides a bad sensor, it could be a broken wire to the sensor (check the vulnerable area near the sensor) or in my case, I had a loose pin in the connector behind the electrics cover. So it's worth checking out the wiring before spending the money on a new sensor.


Steve
2012 M3W
Uncracked chassis, still!


Re: Speedo not working [Re: Richard Baxter] #654057
03/08/20 04:38 PM
03/08/20 04:38 PM
Joined: Dec 2008
Posts: 18,725
South Yorkshire
DaveW Offline
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DaveW  Offline
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South Yorkshire
For a while in the mid noughties Steve some cars had the sensor on the gearbox output shaft. My 2005 Roadster is this way.

On the hub sensor, there's a small built in light which flashes as the wheel turns, and this validates a signal, but you need dim lighting to see it.

OH! Just noticed this is in the three wheeler section! Doh!#


DaveW
2005 Corsa Red Roadster S1
2016 Saffron Yellow (Narrow) AR Plus 4
Re: Speedo not working [Re: Richard Baxter] #654086
03/08/20 06:55 PM
03/08/20 06:55 PM
Joined: Jun 2012
Posts: 1,434
United Kingdom, Lincolnshire
planenut Offline
Has a lot to Say!
planenut  Offline
Has a lot to Say!

Joined: Jun 2012
Posts: 1,434
United Kingdom, Lincolnshire

The wheel speed sensor also has an input to the ECU for engine idle control. There is a plug near the RH wheel hub in the sensor loom and that seems to be the source of many of these problems, a look and clean of that would be a good starting place. There are a number of Google instructions for checking the function of the wheel speed sensor by spinning the wheel and checking the resistance at the plug on RH hub. Better to check the sensor than just replace it. If you had a new sensor 3 years ago you would hope that it is not the problem. Clean and remaking all the plug connections is a worth a try.

Re: Speedo not working [Re: Richard Baxter] #654518
06/08/20 09:59 AM
06/08/20 09:59 AM
Joined: Jun 2017
Posts: 6
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Richard Baxter Offline OP
New to Talk Morgan
Richard Baxter  Offline OP
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Joined: Jun 2017
Posts: 6
Broken wire it was - easy fix, thanks

Re: Speedo not working [Re: Richard Baxter] #654827
07/08/20 02:41 PM
07/08/20 02:41 PM
Joined: Aug 2012
Posts: 2,027
atalante83 Offline
Talk Morgan Expert
atalante83  Offline
Talk Morgan Expert

Joined: Aug 2012
Posts: 2,027
That was happened to me
Broient wire


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