 | Home > Td5 > Another dead alternator |
 
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| excossack Member Since: 22 Feb 2012 Location: North West Posts: 5842   
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Alternator packed in again. Old one lasted from July 2020 to this weekend
New alty to be ordered on order. The suggestion from Mrs Excossack was, is it due to the extra batteries I have that are charged via a simple relay split charger setup Do I need a more advanced one? I did look at this type https://www.ebay.co.uk/itm/331147338969 which looks like heavy duty relay and a pair of volt meters. Or is it just pot luck? No oil leaking from the current (no pun) alternator. Why do they die? 1999 Defender TD5 110 Regards John M0VAZ Econet Station 48 no clock |
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13th Nov 2022 6:43pm |
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| excossack Member Since: 22 Feb 2012 Location: North West Posts: 5842
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Hi Tom
Alternator is outputting 12.1v or there abouts
I did get a brief 5 mins or so charging but soon returned to battery not charging warning light. 1999 Defender TD5 110 Regards John M0VAZ Econet Station 48 no clock |
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13th Nov 2022 7:21pm |
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| geobloke Member Since: 06 Nov 2012 Location: Nottinghamshire Posts: 4410
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Is it only ever charging at 12.1v?
Miffy's will vary between 12.4-14v depending on battery condition and use. What I have noticed is that since fitting LED lights the amount of charge being supplied by the alternator has been much much lower than with all filament and halogen bulbs were fitted. The only time the alternator really kicks out voltage is when the Waeco fridge is being used or the winch. Just wondering if since fitting the LED lights the vehicle is now more electrically efficient... Might be worth taking the alternator to be tested, someone like this - https://www.alternatorsnorthwest.com - Never used them but might be worth giving them or someone closer to you a call. |
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14th Nov 2022 10:59am |
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| excossack Member Since: 22 Feb 2012 Location: North West Posts: 5842
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Previously the voltage has been 13.x Volts upto 14.3 Volts or thereabouts
But with the battery warning light being on and the head lights getting dim....something was not happy. We have a auto spark place up the road from me who I have used before. Now I have two dead alternators. I might take one apart for a look. 1999 Defender TD5 110 Regards John M0VAZ Econet Station 48 no clock |
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14th Nov 2022 11:10am |
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| geobloke Member Since: 06 Nov 2012 Location: Nottinghamshire Posts: 4410
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Very strange to have gone through two in so short a period. What brand were they?
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14th Nov 2022 11:23am |
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| excossack Member Since: 22 Feb 2012 Location: North West Posts: 5842
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It is odd.
It could be previous oil leaks getting in to the alternator, it could be unlucky. Denso is the make I have used. 1999 Defender TD5 110 Regards John M0VAZ Econet Station 48 no clock |
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14th Nov 2022 11:30am |
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| geobloke Member Since: 06 Nov 2012 Location: Nottinghamshire Posts: 4410
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Huh a Denso... Best manufacturer by far. Weird. I would take it apart and have a look. See if it is just oil contamination.
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14th Nov 2022 11:32am |
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| excossack Member Since: 22 Feb 2012 Location: North West Posts: 5842
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I will take it apart. I always held them in the 'good make' department 1999 Defender TD5 110
Regards John M0VAZ Econet Station 48 no clock |
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14th Nov 2022 11:35am |
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| excossack Member Since: 22 Feb 2012 Location: North West Posts: 5842
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Alty arrived this morning, and I had a 1 hr gap for lunch before another meeting.
55mins later all back together and normal volts resumed.  1999 Defender TD5 110
Regards John M0VAZ Econet Station 48 no clock |
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16th Nov 2022 2:08pm |
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| freddie206 Member Since: 18 Oct 2015 Location: Skipton Posts: 90 
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I’d be interested to know why the alternator failed if you end up taking it apart.
I had to replace mine the other day. Granted it was 16 years old but the engines only done 50,000. Is it just the 4 bolts holding the vacuum pump to the alternator? I have a look at mine later. Fred |
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16th Nov 2022 3:13pm |
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| excossack Member Since: 22 Feb 2012 Location: North West Posts: 5842
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i will be interested as well.
I think its 4 screws/bolts holding the vac pump in place. 1999 Defender TD5 110 Regards John M0VAZ Econet Station 48 no clock |
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16th Nov 2022 3:19pm |
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| roel Member Since: 08 Aug 2009 Location: Lelystad Posts: 2039  
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This is the interesting part:
 Click image to enlarge I tried to find this part separate but I failed. 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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16th Nov 2022 6:07pm |
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| MadTom Member Since: 10 Sep 2013 Location: Olomouc Posts: 616  
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There are 3 parts - regulator, - bushes in holder and - rectifier block. Lot if time the bushes are worn, but it is possible to buy them. And it is cheap. "Drobek" = The Small One - Discovery 2, "Blufínek" = The Blue Thing - Defender 130, and for me at least Ford Mondeo
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16th Nov 2022 7:53pm |
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| lightning Member Since: 23 Apr 2009 Location: High Peak, Derbyshire Posts: 2748
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Mine's on 146,000 and still the original alternator.
But the one on our 90 failed at 104,000. |
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17th Nov 2022 8:35am |
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