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Thread: Battery light flickering.

  1. 3rd April 2011, 10:36 PM #1
    royce121 Guest

    Battery light flickering.

    I was driving home this evening and I noticed that the battery warning light flickered 4 or 5 times on the 40 minute drive. It only stayed on for a second or less each time and tended to occur when stopped at traffic lights.

    Alternator issue???
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  2. 4th April 2011, 12:58 AM #2
    Milkman Dan
    Milkman Dan is offline Fossicker
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    How old is the battery?
    Using a multimeter, (jaycar $6-10) with the engine running, the voltage across the battery posts should be between 14.1-14.4v.
    Above or below this would point to the alternator.
    With engine off check the battery again, should be at or above 12v, below 11v is not a good sign and a pointer to battery.
    Check the belt too.
    Last edited by Milkman Dan; 4th April 2011 at 01:06 AM. Reason: 2am in the morning, perfect posting, Pah!!!
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  3. 4th April 2011, 11:29 AM #3
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    BMKal
    BMKal is offline ForumSage Gold Subscriber
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    If it's only doing it when you're stopped at the lights, check your fan belt. Common for a worn belt to slip when engine is at low revs.

    But the above advice on using a multimeter is always good in any case. I check the voltage on mine regularly, both with the engine stopped and running at idle.
    Cheers .........

    BMKAL

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  4. 4th April 2011, 12:02 PM #4
    kenleyfred Guest
    When the same was happening on my Hilux work ute, it ended up being shot bearings in the alternator. Needed a new alternator. Was also very sporadic in the beginning.
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  5. 4th April 2011, 02:17 PM #5
    Gavo
    Gavo is offline Master
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    I would be looking at the brushes. Mine did the same thing and thats all it was less the $10.00 and a bit of solder. I am not an auto elec and i did it easely. My mate paid $400.00 plus fitting.And The other $200,000.00 for 4 years of navy training
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  6. 4th April 2011, 08:09 PM #6
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    imatt
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    Check it all with a multimeter like mentioned earlier, I would think it would be the brushes in your alternator.
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  7. 4th April 2011, 10:14 PM #7
    royce121 Guest
    Thanks for all that advice, only had my D2 V8 for 3 days so a bit fresh to all this. I've still got it under the dealer's warranty so I'll get them to check all the below and hopefully sort it.

    Cheers.
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