Home > Technical (L322) > Voltage Question |
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JohnnyDangerous Member Since: 16 Dec 2012 Location: East Sussex Posts: 833 |
Just driven the car over 7 miles, when we got to the other end I did the onboard diagnostics and the voltage reads 11.8V on the digital dash display, now I dont see how this can be correct as the car turns over very fast and it would be flat after driving with lights and demisters on etc so my question is can the voltage at the bat be say 12.5 static and more after a run but wherever it takes its reading from (terminal R) lower, ie a bad cable. One day your life will flash before your eyes......................................make sure yours is worth watching!
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19th Dec 2012 3:42pm |
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JohnnyDangerous Member Since: 16 Dec 2012 Location: East Sussex Posts: 833 |
Hopefully my bear will be down tonight with the verdict and a multimeter so we can check it. One day your life will flash before your eyes......................................make sure yours is worth watching!
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19th Dec 2012 5:06pm |
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axle Member Since: 28 Oct 2007 Location: Perth Perth the end of the Earth Posts: 2964 |
If I do the secret menu voltage check it seams read 1v under engine off or on . 2008 MY Supercharged
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19th Dec 2012 5:07pm |
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nicedayforit Member Since: 11 Jun 2011 Location: Beside the Solway Posts: 3969 |
^^^^ I agree, need a good voltmeter.
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19th Dec 2012 5:07pm |
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JohnnyDangerous Member Since: 16 Dec 2012 Location: East Sussex Posts: 833 |
That would be about right then but 12.4 is a bit low, also at night you can see the display getting brighter if you rev the car. One day your life will flash before your eyes......................................make sure yours is worth watching! |
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19th Dec 2012 5:15pm |
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JohnnyDangerous Member Since: 16 Dec 2012 Location: East Sussex Posts: 833 |
Via diagnostic machine it was 13.8-14v @2000rpm when switched off 11.9v One day your life will flash before your eyes......................................make sure yours is worth watching!
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20th Dec 2012 12:33am |
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stan Site Moderator Member Since: 13 Jul 2010 Location: a moderate moderated moderator moderating moderately in moderation Posts: 35246 |
last time i checked mine it was 14.5v on idle and 12.4 when switched off, maybe your battery is on the way out.. ... - .- -.
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20th Dec 2012 9:13am |
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Paulhh Member Since: 23 Dec 2012 Location: Carrbridge Posts: 143 |
I hadn't realised that 12.4v would be too low when measuring the battery with everything off? I thought anything over 12v would be good. Maybe I need a new battery? |
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27th Dec 2012 6:03pm |
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nicedayforit Member Since: 11 Jun 2011 Location: Beside the Solway Posts: 3969 |
If I don't use my car for a few days the voltage drops to 12.4V and stays there.
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27th Dec 2012 8:08pm |
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