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PAT303



Member Since: 25 Feb 2013
Location: Australia
Posts: 123

Australia 1998 Defender 110 300 Tdi SW Alpine White
No power from the alternator.
Just a quick one, I've got the battery light on and zero charge from the alternator, I bypassed the wiring by connecting the exciter wire direct from the alternator to the battery and it immediately started putting out 14.4 volts so it's working fine, I just need to find why the exciter has no power, any suggestions?. Thanks
Post #768906 17th Apr 2019 5:48am
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dorsetsmith



Member Since: 30 Oct 2011
Location: South West
Posts: 4554

Witch engine type TDI 200 , 300 TD5, TDIC 2.4 , 2.2 Question for the right wiring diagram
Post #768910 17th Apr 2019 6:22am
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LandRoverAnorak



Member Since: 17 Jul 2011
Location: Surrey
Posts: 11240

United Kingdom 2013 Defender 110 Puma 2.2 USW Orkney Grey
From his vehicle icon, it looks like a 2.4. Darren

110 USW BUILD THREAD - EXPEDITION TRAILER - 200tdi 90 BUILD THREAD - SANKEY TRAILER - IG@landroveranorak

"You came in that thing? You're braver than I thought!" - Princess Leia
Post #768913 17th Apr 2019 6:46am
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dorsetsmith



Member Since: 30 Oct 2011
Location: South West
Posts: 4554

but posted in Tdi
Post #768917 17th Apr 2019 6:57am
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LandRoverAnorak



Member Since: 17 Jul 2011
Location: Surrey
Posts: 11240

United Kingdom 2013 Defender 110 Puma 2.2 USW Orkney Grey
Good point Rolling with laughter Darren

110 USW BUILD THREAD - EXPEDITION TRAILER - 200tdi 90 BUILD THREAD - SANKEY TRAILER - IG@landroveranorak

"You came in that thing? You're braver than I thought!" - Princess Leia
Post #768918 17th Apr 2019 7:00am
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PAT303



Member Since: 25 Feb 2013
Location: Australia
Posts: 123

Australia 1998 Defender 110 300 Tdi SW Alpine White
Sorry, 300 Tdi Defender, I also have a 2.4 TDCi. I think I found the problem, wiggling the exciter/power wires on the alternator checking voltage it works and then doesn't, looks like a poor connection.
Post #769038 18th Apr 2019 4:13am
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dorsetsmith



Member Since: 30 Oct 2011
Location: South West
Posts: 4554

good news cheap fix Thumbs Up

Last edited by dorsetsmith on 9th May 2019 11:15am. Edited 1 time in total
Post #769044 18th Apr 2019 5:24am
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PAT303



Member Since: 25 Feb 2013
Location: Australia
Posts: 123

Australia 1998 Defender 110 300 Tdi SW Alpine White
I can't really complain, I bought it brand new 21 years ago and it's survived the worst Oz has thrown at it, and starts first crack of the key and uses no oil after 523,000km's.
Post #769090 18th Apr 2019 10:52am
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PAT303



Member Since: 25 Feb 2013
Location: Australia
Posts: 123

Australia 1998 Defender 110 300 Tdi SW Alpine White
What I will be asking soon is which turbo option is the best, VNT or new cassette.
Post #769092 18th Apr 2019 10:54am
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PAT303



Member Since: 25 Feb 2013
Location: Australia
Posts: 123

Australia 1998 Defender 110 300 Tdi SW Alpine White
Well just a heads up, no joy so far, I've even replaced the alternator and still get no voltage output. I don't understand actually because the brand new alternator has zero output even when I run 12V directly to the exciter plug. It's got me stuffed.
Post #772257 9th May 2019 10:41am
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dorsetsmith



Member Since: 30 Oct 2011
Location: South West
Posts: 4554

Had alternator with the brushes jammed up in the holder stopping DC out put
Post #772262 9th May 2019 11:22am
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benniferj



Member Since: 20 Oct 2016
Location: Basingstoke
Posts: 361

United Kingdom 2003 Defender 110 Td5 XS CSW Oslo Blue
During an engine swap on a 200tdi, Had built up a 200tdi Def block with all new ancillaries. Put it in, wired up and no alt charge. Put in a new loom, still no charge.Put in the old alt and worked fine. Could be a combination of a damaged loom in the first place, and a dead brand new Alt (possible, mine was at least a half decent Bearmach dead on arrival)

I would look at finding the pin out for your engine loom and run a temp cable from the multi pin and see what happens. If the alt won't charge with a direct feed put your old 'known good' alt on for the moment.
Post #772431 10th May 2019 8:12am
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PAT303



Member Since: 25 Feb 2013
Location: Australia
Posts: 123

Australia 1998 Defender 110 300 Tdi SW Alpine White
Well had some success today, I disconnected everything and just ran the original wire from the alternator to the battery and hey presto 14.2 Volts, I'd say my second battery, wiring or isolater is the culprit.
Post #772570 11th May 2019 5:00am
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