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| McS Member Since: 05 Oct 2009 Location: Banbury Posts: 686  
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Hi all,
my Td5 speedo is on the fritz, i'm still getting the mileage reading but the speedo needle either just sits at zero or wobbles madly around the dial... Any thoughts? Ross The Scotia Winch Challenge |
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29th Dec 2009 11:51pm |
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| Martin Site Admin Member Since: 02 Apr 2007 Location: Hook Norton Posts: 6573  
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Does the needle sit too "low" when the ignition's off (i.e. below 0 mph)?
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30th Dec 2009 11:16am |
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| McS Member Since: 05 Oct 2009 Location: Banbury Posts: 686
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Hi Jamie,
long time no speak mate. I'll have a look today as something at the back of my mind says that the mileage figure was kind of erratic... Martin, no, it sits at the zero with the ignition off - what you thinking? Ross The Scotia Winch Challenge |
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30th Dec 2009 12:47pm |
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| Martin Site Admin Member Since: 02 Apr 2007 Location: Hook Norton Posts: 6573
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My thought was that the needle has become loose.
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30th Dec 2009 5:10pm |
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| jst Member Since: 14 Jan 2008 Location: Taunton Posts: 7889  
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mine does this occasionally, sometimes it flicks to 90mph on startup too. it nearly always happens after a dunking or day out playing and after a couple of miles sorts itself out. i think its mud/water/cr*p on the transducer connectors. Cheers
James 110 2012 XS Utility 130 2011 M57 bespoke Camper 90 2010 Hardtop 90 M57 1988 Hardtop |
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30th Dec 2009 8:45pm |
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| Peter Member Since: 04 Mar 2012 Location: Kent Posts: 153 
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Old post, but thought I'd add my query here as is related.,
My 55 TD5 Speedo has started to wobble at about 55mph, reading on this forum it could just be a dirty connection on the Td5 Defender Speedo Transducer. Can someone please tell me where exactly this is on the vehicle. Thanks Peter |
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13th Apr 2012 7:50pm |
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| twopoint6khz Member Since: 18 Aug 2011 Location: North Lakes Posts: 654 
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Take the centre seat or cubby box out, then unscrew the cover directly below this. Lift this off and you should be able to see down to the transmission under the vehicle. Take the opportunity to laugh at how little is between you and the road
The speedo transducer is down an awkward gap, attached to the front of the transfer box. To get it off, you need a 12-sided ring spanner to poke down the gap (an ordinary 6-sided one won't let you turn the bolt far enough to get purchase on it again). There is one bolt holding it on IIRC, and probably a cable to undo? (long time since I did this). Undo the bolt, which helpfully has about 3" of thread on it, and remove. You can then pull the thing off. Check the cog inside is in one piece and not mangled - it's plastic. I'd give the whole thing a clean. The alternative I might suggest is that there's a dodgy connection to the main fuse under the driver's seat, but this would probably affect a whole lot more than the speedo. I once had to drive all the way to Manchester with no speedo, no lights and no indicators  |
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13th Apr 2012 7:56pm |
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| jst Member Since: 14 Jan 2008 Location: Taunton Posts: 7889
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prior to above, you could just try going under the vehicle, take the wiring plug off the transducer and give it a clean out and refit and see if that cures it.
transducer is behind the handbrake drum on the left hand side face of the T box before the oil fill face. Cheers James 110 2012 XS Utility 130 2011 M57 bespoke Camper 90 2010 Hardtop 90 M57 1988 Hardtop |
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14th Apr 2012 8:59am |
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| Steve B Member Since: 22 May 2009 Location: Warwickshire Posts: 586 
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I needed to remove mine last week, its a 5 minute job if you go underneath. 8mm socket.
I cant' believe I am going to suggest this as people usually blame oil in the injector/ecu loom on every problem going. But I did read (not experience) that this could give odd behavior of the clocks? Maybe worth a look, easy to pull the plugs off the ecu. Steve  |
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14th Apr 2012 9:42am |
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| Peter Member Since: 04 Mar 2012 Location: Kent Posts: 153
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I can't easily go top down, as have a wiring loom going to lots of stuff on the centre cubby box, but was at a mates garage earlier today and was able to go bottom up. Behind the brake drum (adjusted the handbrake whilst the opportunity was there btw) the is a wired block connector going to something that has a nut on it. I assume this is the connector for the speedo cog ?? Anyway was surpissed how loose it all felt, so just gave it a jiggle in its position as had no idea what it was as had not read the above today.
On a side note is the a decent LR mechanics manual for the Ecu3 TD5 which covers the 2005 Defender as I have no problem tackling these problems myself as can't see point of paying someone else lots of money to so same. In the UK the Haynes manuals are NFG IMHO. Perhaps this would help in me identifying the names at least of these electrical bits. Thanks Peter |
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14th Apr 2012 11:51pm |
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