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Can be loose connections or the alternator is failing.
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∙ 11y ago
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Why does a battery gauge moves up and down while the engine is running?
A battery gauge "moves up and down" while running because of fluctuations in the voltage output of the circuit which it is connected to. This may be because of equipment on the circuit.
Why would the battery gauge drop while car is running?
If it is your voltmeter that drops while the vehicle is running. Most likely the alternator isn't putting out enough volts.
Does an alternator charge a battery while the car is not running?
No , just when the engine is running
What does a vehicle depend on to keep it charged while the car is running?
The alternator - it provides a charge to the battery while the engine is running.
Will it decrease your battery time if you charge your laptop while it is running?
No, it will not.
What if battery gets wet while car is running?
It will do no harm.
Why is the car battery charging at 14 volts running and 13.5 not running?
your alternator charges the battery while the car is running. The alternator actually puts out a higher voltage than 14 volts while it is running, but it is reduced by a voltage regulator (most of which are already built into the alternator housing), to prevent damage and premature death of the vehicles battery. While your car is not running, the alternator is not charging the battery, and the 13.5 volt reading you get is just the measurement of the voltage the battery is holding at that given point.
Could the problem be your alternator or the battery when the check gauge engine light comes on while the battery gauge keeps moving.?
that depends on what your voltage gages says while the car is running. while the alternator is spinning, it should generate 13 to 18 volts. if that's the case, your alternator is fine. If not, you need to replace it. it won't charge the battery, giving you about 20 minutes of drive time, but the more you drive the battery like that, the more you will stress it out. if you stress the battery too much, it may go bad on you too. you can get the battery and alternator tested at most auto parts stores. many stores will even test your parts for free.
What could be causing the the battery light to stay on after replaceing the battery in a 2003 Ford Expedition?
The battery light comes on when the alternator is not charging. Changing the battery did nothing. Either put a gauge on the battery to see if it is charging, or while running, disconnet the positive cable from the battery. If the car dies that means the alternator is not charging. Most parts stores will check it for free. Oriely's , Autozone, etc.
Can a battery be charged by an alternator while running an electric motor?
Yes
Is there a way to determine whether it is your battery or alternator that needs to be fixed in a 2001 Bonneville?
If you can get your vehicle started you can then un hook the battery while it is running and if your vehicle stays running then your alternator is good. If it stalls and dies as soon as you unhook the battery then the alternator is not good.If you can get your vehicle started you can then un hook the battery while it is running and if your vehicle stays running then your alternator is good. If it stalls and dies as soon as you unhook the battery then the alternator is not good.
Will your alternator recharge your battery if you let it sit for a while?
If the engine is running and the alternator is good. If the engine is not running, no.
