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Old 11-08-2006, 11:16 AM
Brian Carlton Brian Carlton is offline
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Join Date: May 2002
Location: Blue Point, NY
Posts: 25,390
Quote:
Originally Posted by kmcmanus10 View Post
However, the problem is when I put the car in drive under a full load (blower, windshield wipers, and lights) it will fall below 12 volts, not enough to keep the battery charged. Does anybody have any idea what the problem is or what I should check?

Welcome to the forum.

Put the vehicle in Park, run it at 1500 rpm or higher, apply the full load, and read the battery voltage. You'll probably need a second person to do this........and holding it steady at 1500 rpm is almost impossible..........so just keep it above 1500 rpm.

If the voltage remains above 13.5V, the system is functioning normally.
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