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Battery charging question?


 
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m9g
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Joined: 16 Aug 2009
Posts: 77
Location: Somerset

PostPosted: Sun Jul 01, 2018 21:01    Post subject: Battery charging question? Reply with quote

I have noticed that the charging system takes a couple of minutes to kick in after truck started, I thought there was a fault with the charging relay and bought a new one but it still does it, it also has a brand new alternator aswell.

It does it every time, i start the motor and battery registers 12 volts and then a couple of minutes later jumps to 13.4 volts.

Its like the charging system has a time delay on it.

Is this normal? and why would it do this?

Thanks for any help
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JungleC
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Joined: 15 Jun 2016
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Location: Lcokerbie

PostPosted: Mon Jul 02, 2018 8:58    Post subject: Reply with quote

Relay only kicks in when voltage from the alternator gets to a certain level. It's usually a couple of seconds at most, but can be slightly longer when cold outside. Can also take slight longer if warm starting as idle speed is reduced. Might be worth checking your idle speed>
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m9g
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Joined: 16 Aug 2009
Posts: 77
Location: Somerset

PostPosted: Mon Jul 02, 2018 16:27    Post subject: Reply with quote

JungleC wrote:
Relay only kicks in when voltage from the alternator gets to a certain level. It's usually a couple of seconds at most, but can be slightly longer when cold outside. Can also take slight longer if warm starting as idle speed is reduced. Might be worth checking your idle speed>


Ok thanks, well its very warm out at the moment, i think idle is about 800rpm at the mo
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jacksdad1963
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Joined: 26 Jul 2011
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Location: Oldham, Lancs

PostPosted: Wed Nov 07, 2018 16:55    Post subject: Reply with quote

Hi, did you resolve the problem?
Sounds exactly the same problem as I'm having  Very Happy
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1999 3.0 TD Duty SWB
3" Body lift, 3" suspension lift, diff dropped, balljoints flipped, extended panhard, Tree sliders, Superwinch, +2" Pro Comps, 33" Mudders: Nearly finished!
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DonaldNZ
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Joined: 07 Feb 2019
Posts: 6
Location: New Zealand

PostPosted: Thu Feb 07, 2019 11:03    Post subject: Reply with quote

sounds normal, might be due to the glow plugs after glow , this to lower emissions & give a smoother idle
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