Question about 1991 Cadillac Seville

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Lost of battery power 1991 seville

Loose all power but head light & dome light

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  • bgreeley1968 Jan 20, 2009

    lights bright&dome light bright driving&lost power to motor&dash

  • bgreeley1968 Jan 20, 2009

    the alt. charging@14.2 the battrey is new

  • bgreeley1968 Jan 20, 2009

    the alt. is charging at 14.1 the battery is new

  • Mark Chaney
    Mark Chaney May 11, 2010

    What?

  • Eric Murphy
    Eric Murphy May 11, 2010

    have you checked your fuse box for blown fuses.

  • Bill Allen May 11, 2010

    does it crank or click? are headlites bright like normal?is it 20 below like it is here?battery voltage?

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The first thing to check is whether the alternator is operating properly. A simple test is to start the car if you can and test the voltage across the battery. If the voltage is above the rated voltage by a couple of volts then I guess the alternator is not the problem. Keep the voltage tester connected to the battery and stop the car. If the voltage drains away below the battery rating the battery is at fault. If however the voltage is very high or low when the car is running suspect the alternator. Hope this helps.

Posted on Jan 20, 2009

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