Question about 1998 Cadillac DeVille

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98 cadillac deville battery wont hold a charge

The battery 98 cadillac deville battery wont hold a charge.bought a new battery it work at first and then it went out again.

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Sounds like a 12V drain on the system, like a trunk or glove box light that won't shut off.> Could be many. many other reasons why. The way I would find the draining circuit would be to remove the neg cable of the battery. I then would connect a 12V test light between the neg battery TERMINAL and the neg battery CABLE. With a 12V drain the light will shine. I would install into the light a 9V battery powered recepticle to hold computer and radio station memory. Then I remove fuses 1 at a time, then reinstall, at the same time looking for the 12V light to go out. Hope this helps.

Posted on Apr 05, 2009

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Posted on Jan 02, 2017

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You need to check the battery terminals and make sure they are cleaned and have a proper charge. Test your battery and make sure it is holding a charge. See if there is moisture on the battery. If so, it may be leaking or it may have busted. Either way, it won't hold a proper charge. Your battery controls all the power. Make sure your wires are getting current to them. You can check them with a voltage meter. Your battery should hold at the least 12V to work properly. You can also check your fuses. Make sure none is blown. If you have any questions, let me know. I am here to help.

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1 have a 1986 caddilac deville i have to jump start it everyday it runs fine after the jump start but soon as i cut the car off it wont start anymore until i jump it again what do you think is the problem


Have you checked your battery???
A bad battery will not hold a charge. When you jump it to start it it will then keep running on the power produced by your alternator.The alternator will be trying to charge your battery but will not be able to if your battery is bad.

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Wont start help!


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