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with everything off unhook the negative terminal an place a voltmeter between the battery and the cable if the needle comes up you have a draw. start pulling fuses until the needle drops when it does you've found your current draw

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Q: How do you find out why your battery is being drained of electric power when alternator is ok?
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Battery light wont go off does it mean battery is being drained?

usually means that the alternator is not charging. So the battery is being drained.


What wire hooks from battery to alternator?

the positive wire that recharges the battery after being drained from the starter


Why is a car battery being drained in an 1985 Fiero. A rebuilt alternator has just been installed but the battery is still contueing to be drained?

dead cell in the battery or something is on that is pulling power from the battery.


What can cause the battery of a 1995 VW Jetta to die after changing the battery twice?

have you checked the alternator??? that's the first thing that comes to my mind if your battery is being drained


Will a bad battery drain your starter?

Your starter is incapable of being drained. It is an electric motor. However a bad starter can drain your battery


What is wrong with my 1986 300zx if when I take the jumper cables off the car dies and my battery is brand new?

Your alternator has failed, and the battery has drained from running the vehicle without being able to recharge it. Replace the alternator and the battery should be fine.


Why is my VW Passat's battery being drained?

It's most probably the alternator. It's not putting any charge back in the battery. Can also be a dead cell in the battery or something is on pulling power from the battery.


What does it mean when battery light on dashboard of a vw lights up and stays on?

The battery indicator lamp illuminating usually means that the battery is not receiving or accepting a charge from the alternator and is being drained past an unsatisfactory state of charge.


How do you know you need an alternator or a battery?

It's easy to distinguish if your car has a damage alternator or battery. The first thing you do is to start your car using your old battery then, once the engine is running then remove the cable from your battery, if the car still running that means the alternator is still charging but is it enough? so you have to measure the current that is being generated by the alternator using a multi tester. If the reading from the tester can reach 13 to 14 volts then your alternator is still good. If not then the carbon brush of the alternator might need to be replace or the IC. If your car battery is already leaking then it possible that the plates are already damage, or if you have tried to charge your battery but the power is easily drained then it needs to be replace. i hope this can help ......... deep


Your 1996 Nissan Maxima won't start up at all Not certain if it's battery or alternator drained the battery soon as you try to start nothing ABS light was on before?

The ABS light is likely coming on because the voltage being put out by your battery isn't enough to satisfy the requirements of the ABS system. It could be either the battery or the alternator. Put a load test on the battery and make sure that's operating within the requirements, and put a volt meter on the battery after starting the car to see the alternator recharging the battery. I've seen it both ways, alternator is bad and need a new one, or the battery is bad and need a new one.


Your alternator and battery both tested good but the battery is not being charged?

Most likely cable running from stud on top of alternator to battery terminal is corroded or broken.


Why is your car not starting and the battery keeps dying?

Possibly a bad alternator. The Alternator charges the battery when the vehicle is running. If the battery is not being charged this could cause the vehicle not to start.