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What cause the problem when alternator is not keeping your battery charged.

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Regulator or alternator module. Also be sure you battery is accepting the charge. Put it on the charger and look cpl hours after if it does hold the charge as example...

Posted on Oct 08, 2009

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Draining the volts form my battery. Not sure what is causing this? I keep charging the batt. but when driven short distances, Battery not charging light keeps coming on ?


Hi, if the battery charging light keeps coming on and the battery is draining it almost certainly means that your alternator needs attention. It may be that the alternator belt is loose or is slipping or theremay be a fault with the alternator itself. A local garage should be able to help you rectify the issue quickly
Good Luck

May 27, 2015 | 1989 Cadillac Sedan DeVille

1 Answer

Fluctuating voltage meter


Alternator maybe charging , but not enough to keep the battery charged which is causing the battery to drop charge. Most likely it's the voltage regulator inside the alternator. but regardless the whole alternator will have to be replaced. This will eventually cause the new battery cells to go bad.

Jan 06, 2012 | 2006 GMC Envoy

1 Answer

Will not star or turn over.


CHECK BATTERY CABLES MAKE SURE THEY ARE NOT CORRODED AND LOOSE.ALSO CHECK BATTERY VOLTAGE.SHOULD BE 12.6 VOLTS IF NOT REPLACED BATTERY.BEFORE REMOVING NEGATIVE BATTERY CABLE TURN OF RADIO FIRST.AFTER INSTALLING NEW BATTERY.WITH ENGINE RUNNING CHECK ALTERNATOR OUT PUT AT BATTERY SHOULD BE 13.5 TO 14.5 VOLTS.DOING THIS WILL MAY SURE BATTERY GETTING GOOD CHARGE.2 REASON BATTERIES STOP WORKING.THEY FAIL FROM OLD AGE AND ALTERNATOR CHARGING SYSTEM NOT WORKING.IF BATTERY CABLES VERY OLD I WOULD REPLACE THEM.THAT WILL HELP BATTERY GET BETTER CHARGE.OLD BATTERY CABLES PUT A RESISTANCE ON CHARGING CIRCUIT CAUSE ALTERNATOR WORK HARDER TO KEEP BATTERY CHARGED WHICH WILL SHORTEN THE ALTERNATOR LIFE.

Jan 26, 2011 | 1999 Oldsmobile Alero

3 Answers

Battery light comes on and off car dies with a quick boost it run again then dies battery good


this is caused by a failing alternator. Kragen auto and Autozone tests these for free.

Jun 03, 2010 | 1996 Mercury Sable

2 Answers

Battery keeps draining


if your battery died while driving and the car cut off while your driving,, your problem is from your alternator!!!,, on a normal working car, you can start, remove ther battery terminals and the car would still run cause the alternator will be powering the car. In your case the alternator isnt working and the car was working on battery power therefore when the battery went dead the car cut off.. Your alternator need \s to be charging between 13.5 and 14.2 volts.. as little as 10 volts will keep the vehicle running.. I'd suggest you have the alternator replaced.

May 06, 2010 | 2003 Chevrolet Impala

1 Answer

Charging problem on 91 ford diesel


CHECK ALTERNATOR FUSE AND CHECK FOR DAMAGE WIRES GOING TO ALTERNATOR.NOW IF BATTERY CABLES ARE OLD THE POSITIVE CABLE MOSTLY CAUSE HIGH RESISTANCE IN CHARGING CIRCUIT CAUSING NO CHARGE CONDITIONS.MAKE DRIVE BELT IS NOT SLIPPING KEEPING ALTERNATOR FROM CHARGING.

Mar 28, 2010 | 1991 Ford F350

1 Answer

Altanator keeps dieing.


A fresh charged battery does not mean it is a good battery.The battery is working the alternator to death,replace it,it has a bad cell,or the amps are to low,and has a short in it.The alternator senses the battery is in bad need off charge,and puts all out until the alternator has nothing left,This is the most likely cause of this problem.Also be sure the battery cable ends are shiny clean when replacing the battery.

Nov 26, 2009 | 1995 Mazda Protege

1 Answer

Battery won't keep a charge


check the air ride suspension system if that is causing the problem the car maybe trying to lift the rear end and it will cause the battery to lose charge check in the trunk for a shut off switch and see if that helps

Feb 28, 2009 | 1995 Lincoln Continental

1 Answer

2001 Lincoln LS electrical system SHUTDOWN


change the drive belt and have the voltage regulator in the back of the alternator checked out and also check for any draws on the car anywhere cause this can cause the alternator to over charge trying to keep the battery charged up

Jul 13, 2008 | 2001 Lincoln LS

1 Answer

Charging system keeps killing alternaters what is the proplem


Most likely the battery was bad before replacing the alternator. Usually one can cause the other to fail. If you have a bad alternator and it's been charging the battery with low voltage for some time, the new alternator can actually "kill" the battery. If the battery is older, usually I replace it when replacing the alternator.

Jun 08, 2008 | 1998 Oldsmobile Aurora

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