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Wales
by Joske Vermeule, September 1
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Forums39
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Jun 14th, 2026
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Joined: Jun 2017
Posts: 14
New to Talk Morgan
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OP
New to Talk Morgan
Joined: Jun 2017
Posts: 14 |
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
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Joined: Dec 2008
Posts: 22,371 Likes: 354
Roadster Guru Member of the Inner Circle
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Roadster Guru Member of the Inner Circle
Joined: Dec 2008
Posts: 22,371 Likes: 354 |
Which model and year Richard?
Is the sensor on the gearbox output shaft or the offside front hub?
DaveW
'05 Red Roadster S1
'16 Yellow (Not the only) Narrow AR GDI Plus 4
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Joined: Feb 2018
Posts: 807 Likes: 38
Talk Morgan Regular
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Talk Morgan Regular
Joined: Feb 2018
Posts: 807 Likes: 38 |
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
Late 2012 M3W
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Joined: Dec 2008
Posts: 22,371 Likes: 354
Roadster Guru Member of the Inner Circle
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Roadster Guru Member of the Inner Circle
Joined: Dec 2008
Posts: 22,371 Likes: 354 |
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
'05 Red Roadster S1
'16 Yellow (Not the only) Narrow AR GDI Plus 4
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Joined: Jun 2012
Posts: 2,242 Likes: 72
Talk Morgan Expert
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Talk Morgan Expert
Joined: Jun 2012
Posts: 2,242 Likes: 72 |
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.
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Joined: Jun 2017
Posts: 14
New to Talk Morgan
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New to Talk Morgan
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Broken wire it was - easy fix, thanks
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Joined: Aug 2012
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Talk Morgan Expert
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Talk Morgan Expert
Joined: Aug 2012
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That was happened to me
Broient wire
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