Question about Cars & Trucks
Sounds as if you have a short draining the battery overnight. Take the battery negative off and run a 12volt test light between the terminal and the ground post on the battery. leave the key out of the ignition switch. see if there is a dim or bright light glowing in the test light. If either one is the case start pulling out your fuses and watching the light until the light goes out. When it goes out y have identified the circuit your short is in. ( headlamps, door switches, ect. ) Make sure to put each fuse back in the proper place so as not to burn anything up!!!!. By the way , you did NOT keep the positive battery terminal off to see if the alternator was charging did you? If you did you just burned up your new alternator,which by the way will give your battery a direct short to ground through the diode trio in the alternator, thus causing the battery to very quickly drain. and Why should you have to jump start a NEW battery? Check to see if you are lucky enough to have a charging fuse, if you did the positive off while running thing that fuse could save you if you have it.
Posted on Apr 18, 2013
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Posted on Jan 02, 2017
SOURCE: Battery won't stay charged.
It sounds like either the alternator is bad, or you need to replace the battery...you can have both checked at Autozone for free..............
Posted on Jan 31, 2009
Double check all connections are clean & tight. You need to get a voltmeter and have the voltage tested at battery with engine off & running. Drive it to the Napa shop you bought the alternator from if necessary, they should perform test free of charge, as the possibility of a faulty one is not out of the question, provided all is connected properly. Did you check that a main fuse for alternator wasn't blown in Uunderhood power distribution box?
Posted on Feb 11, 2009
SOURCE: new battery will not hold charge
Check your power distribution box under hood, usually close to battery for blown fuse, may be one for alternator circuit in there, otherwise you'll need to get a voltmeter on that battery to see if alternator is charging or not.
Posted on Mar 14, 2009
when you say new,how old,the reason i ask is some batteries are supplied dry.(no acid)but fully charged.maybe thats far fetched,but possible.....you need to put a voltmeter on the terminal to see if you have a current drain...and then sort out the short. unless you were sold a duff battery ???
Posted on Sep 15, 2010
Tips for a great answer:
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Please see my tip at http://www.fixya.com/cars/r5925550-dead_battery_troubleshooting . These are generic instructions. If you get stuck or need specific instructions for your car, please get back to me with model, year and engine info.
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