Question about 1989 Lincoln Town Car

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Battery drains overnight

My battery drains overnight. When I jump it, it will not stay running after I remove jumper cables. Also, the radio comes on by itself. If I pull the radio fuse, what else will be off? Do I have a short in radio, badalternator, bad battery?

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  • drofwarc49 Dec 17, 2008

    Yes I am handy with a dvom

  • jac wilson May 11, 2010

    there is a test for this. are you handy with a dvom?

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You seem to have more than 1 problem. First the alternator is not working efficiently need to be replaced. Secondly the battery doesn't seem to hold a charge. More than likely needs to be replaced. About the drain if there is a drain and you want to know where it is follow these simple steps.
1. Get a regular test light remove negative battery lead and connect clip on end of tester to the battery cable and the point end to the negative pole on the battery.
2. With everything off and all doors and all lights off the test light should be out.
Open a door or turn on lights any thing that will need power from the battery and tester should light up.
Note: I when everything is off the tester is light go to fuse boxes (REMEMBER ALL DOORS HAVE TO CLOSED WHEN DOING THIS, ANYTHING THAT DRAWS POWER MUST ALSO BE OFF VERY IMPORTANT) remove fuses one at a time when you take it out if the light is still on replace immediately and move on to the next and so on. When you pull the fuse of where the drain is coming from the test light will go out. BINGO you have found the source of your drain. Old good secret I learned years ago in Mechanical School. Good Luck and get in contact if you need more help. If this takes care of your problem just leave me a FIXYA thanks.

Posted on Dec 17, 2008

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Thanks shotta 1

Posted on Dec 17, 2008

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