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Alternator not charging.... sometimes 200 1993

posted by  B.B. on  Mon Jan 16 13:38 CST 2023
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last visit: Mon Oct 6 13:15 CST 2014
[RELATED]

11.8 Volts is below nominal battery voltage of 12.6 VDC with car off.
Bad or weak cell/s in the battery?
You should confirm that with another VOM.

You should measure about:
12.6 VDC at the battery terminals car off
14 VDC at the battery terminals with the car running.

How old is the battery?
Did you allow a fully discharged battery to freeze?
Hopefully a NO answer to that question.
Use a battery hydrometer to check each cell.

How are the brushes in the Voltage regulator?

Bill






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