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Yes, if it is allowing the battery to be overcharged, it will ruin the battery.

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12y ago

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Could a bad alternator cause a new battery to die?

Yes, it can over or undercharge the battery. If i is overcharging it can ruin the battery. If it is under charging the battery will just run down. Check the voltage at the battery with the engine running. You should read around 13.5 to 15.5 volts.


What will cause s new battery in a 2000 Chevy venture to die?

Alternator is defective and is not keeping the battery charged. Or, you have a light or relay that is on pulling power from the battery. Start the engine and check the voltage at the battery with a digital volt meter. You should have 13.5 to 15.5 volts if the alternator is good.


Will a car running hot cause battery to die?

No, that will have no effect on the battery.


How do you get the auto theft system to stop flashing when your battery die?

If your battery is dead,,,nothing should be flashing. There is no voltage to anything.


What might cause a Dodge Neon battery to die?

check battery if it has water and check the starter


What can cause a motorcycle battery to die overnight?

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Why do people keep telling others to check their alternators for cars by removing the cables as it is running when they know it will cause the voltage regulator to be ruined?

This will not work on many OBD (compterized) cars. The engine will die shortly after disconnecting the battery cable. The computer must be power by the battery.


Battery light stays on in your Chevy silverado 2005?

test the voltage on the battery first, then on the alternator. If its good then it could just be the diode in the alternator. I would suggest you replace it becuase eventually your alternator will die and the battery will not get charged leaving you stranded somewhere. It is possible to just be a battery but you wont know unless you have the battery tested. check the voltage on the battery and the alternator before you do anything else.


If not the alt or battery what could cause a 1979 Chevy Nova with a 6 cylinder in-line engine to stall and die at decreasing amounts of speed?

The same thing happened to me in my 1984 Mercury (I know, not the same), But it turned out to be the voltage regulator. Some older alternaters dont have internal voltage regulators.


On a Ford Taurus if there is a bad alternator or not will the car DIE WHEN I REMOVE THE BATTERY CABLE?

You will destroy the voltage regulator if you unplug the battery while it is running, then you will have to replace the alternator anyways.


Can battery corrosion cause a battery to die or is it a sign that it may be dying?

it's already well dead if it is corroding


My Firebird won't turn over or start what could cause this problem?

Check your battery voltage. It should be reading over 12 volts while cranking. Todays batterys will not even take a jump when they die... Are the battery cables corroded? Check to see if the ground cable is secure to the block