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Dudejb46 Newbie
Joined: 02 Jul 2018 Posts: 2
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Posted: Mon Jul 02, 2018 16:17 Post subject: 12.8v charging issue |
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Hi all new here I’ve just bought a 1995 bighorn 3.1, the charge gauge shows 12v and a multimeter across the battery when running with no lid after 5mins shows 12.8 at idle if I rev it to 3k it will sit at 13.1v with out load, ( will drop to 12.8 with wipers and lights.
If I removed the blue ray it makes no difference.
Does anyone have any ideas before I start by changing the alternator?
Thank you |
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Posted: Mon Jul 02, 2018 16:17 Post subject: Google Ads keep this community free to join! |
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Dudejb46 Newbie
Joined: 02 Jul 2018 Posts: 2
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Posted: Mon Jul 02, 2018 16:23 Post subject: |
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I might add, it doesn’t always go to 13.1 on revs, it will sometimes only do 12.9 |
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eithan h Moderator
Joined: 11 Dec 2005 Posts: 8195 Location: oxfordish
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Posted: Mon Jul 02, 2018 18:21 Post subject: |
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sounds like it's on it's way out |
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JungleC **
Joined: 15 Jun 2016 Posts: 52 Location: Lcokerbie
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Posted: Tue Jul 03, 2018 9:00 Post subject: |
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Check the belt, often slip on 3.1 without making a noise, check that the adjuster is not at maximum. Bad battery can also limit output voltage so if you can, try another battery. Otherwise get the spanners out. |
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m9g **
Joined: 16 Aug 2009 Posts: 77 Location: Somerset
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Posted: Tue Jul 03, 2018 18:24 Post subject: |
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mine is only on 12 for the first couple of minutes of starting then jumps to just over 13 with nothing on and thats with a brand new alternator and belt only fitted last week, you sure you have a fault? _________________ 1994 white Bighorn 3.1TD (4JX1) Irmscher edition |
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m9g **
Joined: 16 Aug 2009 Posts: 77 Location: Somerset
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Posted: Tue Jul 03, 2018 18:26 Post subject: |
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also why did you remove the relay? i guess thats what you mean when you say blue ray _________________ 1994 white Bighorn 3.1TD (4JX1) Irmscher edition |
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