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How does an alternator cause a negative draw on the battery rather than charging it It's a 90 Buick LeSabre 3.8. It produces an output charge during idle but draws on the battery in high rpm driving?
Wiki User
∙ 15y ago
The alternator will not draw power from the battery but the rest of the vehicle systems will. If your alternator is not functioning properly the battery takes the toll.
Wiki User
∙ 15y ago
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