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When it will not hold a charge nor take a charge it is defective. Of course something might be on pulling power from the battery. Any light or stuck relay. Disconnect the negative battery cable, charge the battery with a battery charger and let it sit overnight. The next day if the battery is still charged it is ok and you have something pulling power from the battery. If it ran down the battery has a dead cell and is defective.
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How do you know you have a bad alternator?
Turn car on remove positive battery terminal if car turns off alternator is bad
How do you know when you need to replace your car battery?
When the battery does not start your car as it normally has, or the battery runs down overnight. If you suspect it is bad then have it checked at an auto parts store.
How do you know if your altinater as gone in your car?
If your battery doesn't hold a charge while running then your alternator is bad
Is the car battery bad?
yes
How do you know when the starter is bad on a Nissan Maxima?
You know when the starter on your nissan maxima is going bad when your car doesnt start/ even when someone gives you a boost, all your fuses are fine, and none of them are NOT blown. You know its your starter and NOT alernator when you take another battery from a car thats been driven and their battery is ok and you put it into your car and the car will not start. If its the alternator, then the car would start in that case.
2004 ford explorer how do you know the alternator is bad?
turn the car on and wen is on, disconect the battery if the cars keeps on working is good,but if the car shuts off it means is bad
How do you know when alternator is bad?
Typically you know your alternator is out when you have to jump start your car numerous times. A way you can test it is by turning on your car and while it's running discount the + terminal. If the car turns off then your alternator is bad. If the car remains in then alternator is good and possible bad battery. Hope this helps
How do you check if my alternator is bad or my batter is bad in my car?
If the car won't start, jump it off. While it is running, remove the positive cable from the battery. If the car dies, then your alternator is bad. If it keeps running then you may have a bad battery.
How do you know when your battery goes bad in your car?
It will not turn the engine over or it will not hold a charge. Either way it must be replaced.
What are the reasons for the car battery light to go on?
its either the alternator the battery is bad or a loose or bad wire on the starter
What causes headlights on a car to dim?
Could be a few things, weak alternator, bad battery, bad wiring. If you have a subwoofer in your car with no battery cap that will certainly do it.
Will a bad cell cause the car not to start?
Yes, one bad cell in a car battery will cause the car not to start.
