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Could be diode in alternator out, causing excess "noise". Take your car to most any major nationwide automotive parts store for free in vehicle testing.

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Q: Your 2000 BMW 323i has a battery light on. The car starts and the alternator puts out the right amount of volts. What could be wrong?
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Your car wont start just makes a clicking sound?

That could be the alternator or the battery. Try jump starting your car with another car's battery. If it still does not start, it is probably the alternator. If it starts, your battery is dead.


How do you know the problem is the alternator?

If your car doesnt start, it could be the battery. But if the car starts and you unplug the negative cable and the car turns off, its the alternator.


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Could alternator drain battery when car is not running?

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How long can you drive a car with a fully charged battery but the alternator might be bad?

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MY car will start when jumped but sometimes start and die and the battery will not keep charge could this be the altinator?

could be the alternator. could be the battery, the alternator charges the battery but does not stop the battery holding a charge.could also be a bad starter motor. take alternator off and have it tested. most places will test for free


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