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What can cause the alternator and battery to lose charge..

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It could be a dead cell. If you take the car to Wal-mart they can ck your battery for a dead or weak cell. Also ck your battery terminals to see if they are clean and connected tight.

Posted on Sep 10, 2010

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My 2004 not charging charge light not coming on an abs light comes on an truck loses power an dies an battery is dead 2004tacoma


Take the truck to a Autozone or O'reilly Auto parts and have the battery and the charging system tested with a special tool, they can advise you what is going on and it is a free service.

Mar 01, 2017 | Cars & Trucks

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My 1999 toyota camry changed alternator twice and my battery is still losing charge what else could cause my battery to lose charge


If your battery is the original one, it is probably getting very weak (that's 13 years old). Batteries last approximately 4 to 6 years then loose potential rapidly from that point on. If that is not the case, then you have a short somewhere in the wiring that is draining the battery.

Jan 11, 2013 | 1999 Toyota Camry

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Cavalier 2005: When headlights are on; heater stops, dash lights go very very dimm and turn signal does not work and ipod ( hooked up to sig.lighter ) stops working....What could be the cause ? Thanks.


Alternator may be bad, causing battery to lose voltage. I think you should have the starting/charging system checked, and replace the battery and alternator as required by the testing. I wouldn't drive it until this problem is fixed, as the car can shut down when the voltage gets too low, working off of the battery. Check whether the charge light is lit when the car is running. If it is, there is a self detected problem with the alternator. If not, there could still be a voltage charge problem, that hasn't been self detected, perhaps a diode is bad or voltage regulator is faulty, causing the alternator to barely put out enough power to keep the car running.

Nov 04, 2011 | 2005 Chevrolet Cavalier

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What causes the battery and alternator to lose power?


It sounds more like your alternator is bad. The basics boil down to this: Your battery when fully charged is used to start your car and support your electrical needs as driving (lights, power windows, etc..) After starting your car the battery loses a little of it's charge and the alternator recharges battery as well as providing power for your ignition, electrical accessories. If the alternator goes bad or is weak, then you rely on more battery power which in-turn drags battery down until it no longer can start your car.
With this said, you can have any good parts store test both your starter and alternator and MOST will do it for free.

Feb 18, 2011 | Jeep Grand Cherokee Cars & Trucks

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I have a 1991 dodeg dakota sport (v-6) and in the past 3 months i have "gone through 3 batteries and 2 alternators. i pulled trouble codes and the same code comes up, code 12 ( stand by memory power...


CODE 12 STAND BY MEMORY POWER LOST.WHAT IT SAYING ECM LOSING MEMORY BECAUSE LACK OF POWER.POSSIBLE CAUSE TO YOUR PROBLEM COULD BE OLD WORN OUT BATTERY CABLES CAUSING POOR GROUND AND HIGH RESISTANCE IN CHARGING CIRCUIT.YOU COULD HAVE WRONG AMP ALTERNATOR AND BATTERY WRONG COLD CRANKING AMPS.MAKE SURE ALTERNATOR BELT TIGHT AND CHECK ALTERNATOR BATTERY FEED WIRE AND ALTERNATOR FIELD WIRES FOR DAMAGE OR LOOSE CONNECTIONS.CHECK ALTERNATOR FUSE. WITH ENGINE RUNNING ALTERNATOR OUT PUT SHOULD BE 13.5 TO 14.5 VOLTS IF NOT ALTERNATOR NOT CHARGING.

Nov 18, 2010 | Dodge Dakota Cars & Trucks

2 Answers

Lites "click" when i try starting. Car started w/ a jump. Ran for 30 minutes turned off. Wont start. Alternator? Or just battery?


sounds like alternater is not charging-however you should charge the battery and have it tested-if the battery is getting weak it can cause the alternater to over work causing a failure

Aug 16, 2010 | 2004 Volkswagen Jetta

1 Answer

Battery is drained by an internal short even with the key turned off on a 98 Mercury Mystique. No fuses are blown. With the battery fully charged it takes about 30 hours to drain the battery. Can a small...


Yes, it is very possible that a small internal short in the starter or alternator can cause this. Sometimes the starter wires can lightly touch and cause it to lose a charge. There are a number of things that can short and cause a battery to die over an extended period time. You should probably consult a specialist because it can be difficult to track down.

Jul 10, 2010 | 1998 Mercury Mystique

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Squealing losing power not chargeing batter changed alternator


If the belt is 3 yrs old or older, change it. If it has oil or anti-freeze or grease on it, change it. If new, add more tension to the belt.

May 13, 2009 | 1994 Isuzu Rodeo

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

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