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itguy
Member Since: 30 Dec 2009
Location: Melton Mowbray, Leics
Posts: 181
 
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Morning everyone
Wife was driving the disco home yesterday and the red battery light came on, went off, came on a few times.
Got it home without bother (11 miles) and I checked the battery voltage at idle, 13.7v and then engine off 12.8v, so alternator doing something.
Presume alternator on way out - would you suggest just replace it now before going anywhere else?
It is our sole vehicle at the moment so need it to be reliable!
Anything else to check before I stump up the £200-300 for a new one?
Also, is the viscous fan normal or reverse thread ?
Cheers
Will.
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 7th May 2021 7:32 am |
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Hardware
Member Since: 28 Jun 2016
Location: Hiding under the M60
Posts: 12709
  
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check earthstraps ... they are becoming a regular source of issues these days. .
Dean
====================================
2011 D4 XS - OBD port protection, RLD spare wheel protector, All LED interiors lights, Timed Climate enabled, iiD tool paired.
2011 D4 Landmark - Stolen from same dealer before I paid for it
2011 D4 GS - Stolen whilst at dealer  ... All LED interiors lights, DRLs, Spare Wheel protector.
1996 300Tdi - Eaten by tin worms
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| 7th May 2021 7:34 am |
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itguy
Member Since: 30 Dec 2009
Location: Melton Mowbray, Leics
Posts: 181
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Thanks, i should have also mentioned that it’s a 2006 with 129k miles on
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| 7th May 2021 7:39 am |
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MattTheTall77
Member Since: 24 Oct 2013
Location: Lincs
Posts: 266
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Definitely check the earth. I had issues a few years back with the battery ending up dead. Changed alternator and still had issues, then I thought battery may be broken after going flat so often so changed that but still issues. Following suggestion on the forum ended up adding a new earth between the engine and chassis and that resolved everything. Also an earth is cheaper to try first than a new alternator 
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| 7th May 2021 8:16 am |
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itguy
Member Since: 30 Dec 2009
Location: Melton Mowbray, Leics
Posts: 181
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Thanks, will check. Have just done a fault scan too and got code P0625 Generator field terminal circuit low
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| 7th May 2021 8:22 am |
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aja4x4
Member Since: 14 Apr 2019
Location: Westbury
Posts: 2459
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if you need an alternator make sure its a Denso just under £200 from Land Rover Direct.
I just replaced mine yesterday it looks a real pain to do but is really easy, I followed the video in the thread below but didn't need to work from underneath its all done from the top.
https://www.disco3.co.uk/forum/battery-light-194916.html Andrew
D3 2.7tdv6 2005
D4 3.0 SDV6 Commercial died and gone to LR heaven
D5 3.0 SDV6 HSE
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| 7th May 2021 8:24 am |
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itguy
Member Since: 30 Dec 2009
Location: Melton Mowbray, Leics
Posts: 181
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Thanks, that looks quite straight forward. I have ordered a 36mm fan spanner, any tips on removing the fan??
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| 7th May 2021 8:39 am |
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Biffysun
Member Since: 09 Jul 2011
Location: Central
Posts: 1787
 
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It's a Left hand thread! ie removal is clockwise 
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| 7th May 2021 8:59 am |
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itguy
Member Since: 30 Dec 2009
Location: Melton Mowbray, Leics
Posts: 181
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Earths all checked ok, fuses ok.
Alternator now on the bench awaiting the new one to go in !
Managed to get the fan off ok (car had cambelt and oil pump 3k miles ago).
Managed to get my local LR dealer to get an LR recon one in for me for 8.30 tomorrow morning and it’s only a short bus ride away to collect.
Jobs a good’un.
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| 7th May 2021 9:46 am |
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itguy
Member Since: 30 Dec 2009
Location: Melton Mowbray, Leics
Posts: 181
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New alternator collected and fitted, battery light off and now charging nicely again.
Thanks all
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| 8th May 2021 6:05 pm |
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aja4x4
Member Since: 14 Apr 2019
Location: Westbury
Posts: 2459
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Andrew
D3 2.7tdv6 2005
D4 3.0 SDV6 Commercial died and gone to LR heaven
D5 3.0 SDV6 HSE
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| 8th May 2021 6:43 pm |
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