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Can be a defective cell in the battery, or it has shorted out. Can also be a defective alternator not providing enough power to keep the battery charged. Can also be a drain on the battery such as a light staying on. dome light, courtesy light, trunk light under hood light, etc. If the battery is over 4 years old or has been run dead more than once, replace it.

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โˆ™ 2009-03-28 14:15:58
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Q: What could cause the battery of a 1986 Buick Riviera to go dead?
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