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Alternator light on

Discussion in '348/355' started by 355Aussie, Mar 23, 2008.

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  1. 355Aussie

    355Aussie Formula Junior

    Jul 3, 2007
    688
    Sydney
    Full Name:
    George
    #1 355Aussie, Mar 23, 2008
    Does anyone know what it means if the alt light is permanently on??

    I though it might be my voltage regulator on the alternator but the car is running fine just the light is on always now.

    Can I rule out the alternator now and maybe it is battery??

    Thanks for any help
     
  2. No Doubt

    No Doubt Seven Time F1 World Champ

    May 21, 2005
    72,740
    Vegas+Alabama
    Full Name:
    Mr. Sideways
    #2 No Doubt, Mar 23, 2008
    It typically means that you are running on your battery, with your alternator no longer charging.
     
  3. PAP 348

    PAP 348 Ten Time F1 World Champ
    Lifetime Rossa Owner

    Dec 10, 2005
    100,224
    Mount Isa, Australia
    Full Name:
    Pap
    #3 PAP 348, Mar 23, 2008


    You cant rule the alternator out just yet. ;);)

    It could still be at fault. Get the alternator checked by a good auto-electrician mate. :):)
     
  4. jm3

    jm3 F1 Rookie

    Oct 3, 2002
    4,364
    United States
    Full Name:
    JM3
    #4 jm3, Mar 23, 2008
    When the engine is idling, the alternator should be working. If the alternator is working, there will be a magnetic pull from the center of the rear alternator bearing. A long screwdriver can be held in your hand, and will swing towards the bearing if the alternator is charging. It is not a small pull, you will know it if you feel it.

    Try it when the engine is not too hot yet.

    Jay
     

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