Hi all,
Could someone tell me why my speedo doesn't work please. There appears to be nothing wrong with the cable. I have unplugged it from the back of the speedo and the cable goes round when the car moves. But the speedo needle does not move when it is plugged in. The dashboard just makes a clicking noise. I haven't had chance to take the dash out properly yet to have a look at the drive in the back of the speedo. I have disconnected for the time being to stop it clicking. Thanks.
Regards Graham
Speedo broken
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MULLEY
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Re: Speedo broken
The old grease may have solidified? or something internal has broken & thats why it won't move? The only way to tell is to take it out & see if you can physically see what the problem might be? If you do need a replacement speedo head, don't chuck the mileage drum, its easy to swap over & then your car will keep its original mileage correctly 
2002 C5 2.0 HDI Estate - Jasmine - Now SORN
2011 Mini Cooper D Clubman - SOLD
2016 Mercedes A180D Sport - Auto refinement
1992 TZD Turbo - Bluebell - My daily
1991 Gti 16V - Blaze - crash damaged, will get repaired.
1990 Gti 8Valve SOLD - looks like it's been scrapped
2002 Mini Cooper S - SOLD - i miss this car
1992 TXD - Scrapped in March 2014
1988 CX 25 GTI Turbo2 - SORN
1996 - AX Memphis 1.5D - Dream - SORN
I'm not just a username, i'm also called Matthew.
2011 Mini Cooper D Clubman - SOLD
2016 Mercedes A180D Sport - Auto refinement
1992 TZD Turbo - Bluebell - My daily
1991 Gti 16V - Blaze - crash damaged, will get repaired.
1990 Gti 8Valve SOLD - looks like it's been scrapped
2002 Mini Cooper S - SOLD - i miss this car
1992 TXD - Scrapped in March 2014
1988 CX 25 GTI Turbo2 - SORN
1996 - AX Memphis 1.5D - Dream - SORN
I'm not just a username, i'm also called Matthew.
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Defender110
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Re: Speedo broken
Is the end of the cable you see going round still square?
Kevan
1997 Mercedes C230 W202
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1997 Mercedes C230 W202
2003 Land Rover Discovery Series 2 Facelift TD5 - Daily driver / hobby days and camping.
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ghaddon1701
- BXpert
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Re: Speedo broken
Yes the end is still square. Thanks.
Graham
Graham
Re: Speedo broken
The speedo needle is not directly coupled to the input shaft but relies on a non-contact eddy-current coupling. And contrary to popular belief it is not the needle that "ticks" but the odometer pawls and gears that are directly driven from the cable.
Does the odometer work? If so, then the needle movement beyond the magnets may be stuck. If not, it is more likely that the cable tip is rotating in the coupling itself.
Does the odometer work? If so, then the needle movement beyond the magnets may be stuck. If not, it is more likely that the cable tip is rotating in the coupling itself.
1991 BX19GTi Auto
Re: Speedo broken
I've just replaced my speedo unit a few weeks ago because it had given up. If the mileage and trip still work then I would swap the dials for another set. Fixed mine . Obviously if you're not getting any distance readings or speed reading then that suggests the issue lies with the cable.
. Obviously if you're not getting any distance readings or speed reading then that suggests the issue lies with the cable.CCC BX Columnist
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'89 16v P1
'90 BX GTi 4x4, 16v P2, 19 TZI auto A/C estate
'92 BX 19 TGD (now 17 Turbo D)
'93 BX 19 TXD estate & 19TD van
'93 ZX Volcane TD 3 Door
'71 DS 21 EFi Pallas, '86 Visa GTi ,
'98 Xantia Activa P1
'07 C4 by Loeb
3 x 2CV, 1 x Mehari
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ghaddon1701
- BXpert
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- Joined: Wed Jun 10, 2009 12:30 pm
Re: Speedo broken
We believe the problem lies with the cable. We think the speedo wen a bit stiff and the cable rounded off. Have greased the speedo and now it turns quite freely with a screwdriver in the drive and the speedo needle moves. So I have ordered a cable. Thanks everybody.
Regards Graham
Regards Graham
Re: Speedo broken
What's more likely is that the nylon ferrule on the cable has moved up and the cable is not fully engaging in the clock. The ticking noise is the end of the cable skipping the corners.