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charging system ?

fahmi
fahmi
in Ford Fiesta Guides

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Hi, ford fiesta 1.5 diesel (20 plate) battery light came on today followed by charging system service now on the screen plugged car into a code reader had 12 volts when normally its around 14,5-15 down to 8 by time i got home is this likely to be my alternator car had a new battery 3months ago .Thanks in advance  max

 

 

 

 

  • Quote


    Yes that sounds like the alternator though they don't generally fail so soon.

    Has the car done high mileage?

    Is the alternator belt still intact?

    Was it fitted with the correct battery?

    You can try unplugging the small plug on the alternator, to see if it goes into default mode and provides about 13v of charge.  If it does then it's more likely a wiring fault.

  • Quote
    • Like 1
    • Author

    cars done just under 90000 (driving instructor) i checked belt looks fine .battery is one for the car . im going to take battery off tonight to charge overnight .il try unplugging alternator plug will it be obvious if its not the alternator at fault ?

  • Quote

    Ah ok, with that mileage I'd be less surprised by an alternator fault.

    If the alternator starts charging with the small plug disconnected then it's not likely to be the alternator at fault.

  • Quote
    • Author

    cheers il check in the morning 

  • Quote
    • Author

    All sorted i hope never to do that again changed the Alternator. couldn't believe how many things had to be stripped to get to it.  Back to 14.9 volts .Happy Days 

  • Quote
    • Like 4

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