Question about 1989 Oldsmobile Ninety Eight

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Battery keeps drainking.Will jump car and if turned off too long after driving it will drain the battery.

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  • Oldsmobile Master
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You have a draw on the system,remove the negative battery cable and putt in line a 12 volt test light you can purchase at a auto parts store cheap.Make sure all doors are closed and lights are off,Remember to remove the hood light.The test light will light up soon as you put it on,Clip one end to the cable that is off the battery.The other end ,stick in the post(negative).It should light up.Unplug the alternator.Did the light go off?If it did,replace the alternator.If it did not,then open the door and pull one fuse at a time and put it back in if the light does not go off.What ever fues causes the light to go off,find out what the fuse goes to,and that will be the problem.To save some time,remove the dome light fuse first and leave it out until you are finished,this will eliminate the dome light ,cause the dome light comes on with the door open.If the light goes off when you remove the light fuse,then that is the circuit that is pulling the battery down.Next I would pull the radio fuse,and clock fuse,the clock memory can cause this also.If the clock in the radio is causing the draw,then replace the radio.I hope this helps just keep pulling the fuses and put them back as you pull them if the light does not go out.You will find the problem.

Posted on Sep 24, 2009

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  • Contributor
  • 32 Answers

If your battery has any considerable age on it,( 2-5years), it could indicate a dead cell in the battery. If you installed an other than factory stereo then you could be getting drain there. If the battery is new, then check your battery terminal connections ensuring they are clean and tight. Also, check your battery cables to ensure they are tight at the engine block and at the starter. You might as well while you have the hood open, check the alternator connections for loose or corroded plug or fasteners.

Posted on Sep 24, 2009

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