Question about 1991 Pontiac Grand Am

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Good alternator & battery, but battery goes dead just sitting

Checked alternator and got new battery. battery is dead by morning and was not in use. pulled the fuse for the dome light...still not running.

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  • Anonymous Mar 26, 2014

    battery light goes on and off but the battery is new along with the alternator and the truck runs fine?? any way to solve this??

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  • 206 Answers

The regulator could be sticking in the alternator. Unplug the alternator and see if the battery goes dead. I replaced an alternator once and the new regulator was bad.

Posted on Feb 15, 2009

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2 Answers

2006 liberty new battery alternator works when sets over night battery goes dead put a kill switch on and still goes dead ?


Hello Jr, The fact that the battery goes dead even with a kill switch would lead me to think the new battery is defective.

Mar 03, 2015 | 2006 Jeep Liberty

1 Answer

DEAD BATTERY OVERNIGHT


Try to unplug ground wire at night and plug in in the morning.
If the battery is good, then it must be there's short circuit, check your wiring.
If the battery is dead, then the battery is bad.

Jun 24, 2013 | 1991 Honda Civic

1 Answer

If i keep the negitive connecter on the battery it will go dead in a hour there is not a wire hooked up on the alternator but i dont know where it might go?


Even with the wire removed, are you saying it goes dead while driving or just sitting . if it goes dead wile driving then the alternator may not be charging the battery as you drive but if it goes dead while the car sits then there is a draw some where.
if you sent me the year make and model with the engine size and also let me know when it goes dead in 1 hour, while driving or car just sitting and i will help you solve the problem. good day

Feb 28, 2012 | Ford Cars & Trucks

1 Answer

The battery is being drained. The alternator is working and the battery is new.


When your car battery goes dead overnight, and if your sure that the battery and alternator are both in good shape then what you may have is a parasitic draw, and it can cause the same result as leaving the headlights on: a dead battery in the morning. You will need a multimeter to trace the draw and to even be sure that is the problem. If you have 1 or 1 is available, get back to me here and i will be glad to help you through the process

Oct 06, 2010 | 1996 Ford Taurus

3 Answers

Battery goes dead overnight on four occasions


I dont think the dealer knew what he was doing ,your altenator has 6 diodes inside it and the are a one way check valve for current,If one fails no light will come on because it is still charging,But will drain your battery,I hope this helps you and have a merry x mas and please dont forget to vote on this solution

Dec 19, 2009 | 2009 Hyundai Genesis

3 Answers

Something is draining my battery


you need a mech you have a draw whitch meeans something is on at all times or internal short on something or pass bad batt.
make sure things ore off like dome light trunk light cig lighter out of socket cell phone charger etc. good luck

Aug 30, 2009 | 1997 Chevrolet Cavalier

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