Battery gauge reading 14 then drops to 12ish
Why at start up my battery gauge reads14 but after a few it drops to above 12ish
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could be a worn battery as well as a failing alternator. Check the output of the alternator to verify that the gauge is true. Check this Ford ;-) guide 1997-2003 Ford F-150 Alternator Replacement on where to place the meter to confirm the output.
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This is normal. They are designed to reduce alternator output when the battery is fully charged. This is to improve fuel mileage. This topic is described in the owners manual.
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