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


  • 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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My 1991 Cadilac Seville has only 24,000 miles on it but the battery keeps going dead like it's being drained, and the radio and antenna are'nt getting any power, is it an ignition problem?

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I was driving down the high way at about 75 and my power cut off i still have head lights and dome , i have no stereo no dash lights and when i turn the key its as almost like there is no battery in it...

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1991 Cadillac Seville wont turn over starter tested and is fine. Its drained 3 batteries in the last 12 months. Tryed banging on it and nothing.

Have your alternator tested too; if it has a sick diode, it can drain the battery and also shunt current away from the starter as well as damage the battery by applying unrectified voltage on one leg of the output. I replaced SIX (6) Delco alternators in nine years on a car built in '95. It would have been more except the engine failed at 57,600 miles and I junked the lemon.
If the starter solenoid is not integrated on your Caddy, it too can fail which will cause too much lost voltage trying to get to the starter. 

Apr 14, 2009 | 1991 Cadillac Seville

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