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Battery keeps running down when you are driving. Your battery light should be on if the alternator is bad. Check the voltage at the battery with a digital DC volt meter set to the 20 volt scale. You should read from 13.5 to 15.5 volts with the engine running at idle. If not the alternator is suspect.

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9y ago
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Q: What are symptoms of a bad alternator in 2000 ford explorer sport?
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