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| miker Member Since: 13 Sep 2015 Location: Surrey Posts: 1763   
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Correct on 14V or so, mine tends to sit a bit lower than that when warm. Careful of moving parts, and make sure you are testing to a decent ground point, I find you need to scratch around on the block at times to get one!!
Mike |
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25th Apr 2017 5:17pm |
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| 4RF RDS Member Since: 19 Jul 2015 Location: Ottawa Posts: 930  
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As said above, correct and good advice... Its probably your rectifier or it needs servicing. You can get kits on ebay to repair it. 2010 Range Rover MkIII Autobiography Super Charged (Idris)
2003 Range Rover Mk III (Desmond FitzWilliam) 2000 Defender 110 CSW TD5 (CTX) 1992 Range Rover Classic (Lizzy) 1972 Series III 300 Tdi (Stanwood) 1967 MGB GT Every normal man must be tempted at times to spit on his hands, hoist the black flag, and begin to slit throats. H. L. Mencken (1880 - 1956) |
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26th Apr 2017 12:59am |
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| roel Member Since: 08 Aug 2009 Location: Lelystad Posts: 2039  
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You don't need to measure near the engine. You can take the fuse cover off and measure there if that is easier. My 90 td5 produces 14,1 V normally without any electrics switched on. It is not a steady signal most voltmeters don't react that quickly so you see a steady 14V but in fact it fluctuates between 13 and 14V. Roel
1984 90 2.5 na Diesel - RR V8 (1994-2001) 1997 Camel Trophy Discovery 300TDI (2001-2009) 2005 G4 Discovery III 4.4 V8 (2008-2018) It's gone but it still hurts. 2003 90 Td5 (2009-now) |
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26th Apr 2017 6:38am |
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| blackwolf Member Since: 03 Nov 2009 Location: South West England Posts: 17359 
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A fairly common problem on the TD5 is for the vacuum pump mounted at the front of the alternator to leak oil into the alternator itself, causing it to fail.
Since the alternator/vac pump is only available as a single assembly, there isn't a great deal you can do about this except replace the entire unit. It is also common on high mileage engines for the the slip rings and brishes to wear excessively. Again, it doesn't seem possible to buy replacement slip rings for these alternators (at least, I can't find any) so replacement is really the only option. |
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26th Apr 2017 7:47am |
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| jst Member Since: 14 Jan 2008 Location: Taunton Posts: 8018  
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it could be a snapped ancil belt, which means coolant not been circulated. check under bonnet first, assuming you have not seen vehicle?
if belt is good then as above. Cheers James 110 2012 XS Utility 130 2011 M57 bespoke Camper 90 2010 Hardtop 90 M57 1988 Hardtop |
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26th Apr 2017 10:15am |
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| Nutter Member Since: 15 Sep 2014 Location: Birchington Posts: 25 
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Make sure your brake lights work as battery light on same fuse i believe.
James |
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26th Apr 2017 12:12pm |
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