battery light on It needs a jump to start and then runs a bit rough?

2010 FORD F-150
232,000 MILES • 4.6L • V8 • 4WD • AUTOMATIC
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BHAMDOC1973
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It needs a jump to start and then runs a bit rough, not sure if related to the alternator. Once I check the battery voltage and charging voltage, ig I remove the alternator is there a way to check the connector behind it to see if am getting what I need to get? if so, what wires should have power and what need ground?
Aug 14, 2024 at 7:49 AM
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BHAMDOC1973
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I checked the charging, and it says 13.50. Battery is from 6/20.
Aug 14, 2024 at 2:19 PM
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STRAILER
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The battery is almost five years old so I would say it is bad. You can remove it and head to an auto parts store for testing or you can use this guide:

https://www.2carpros.com/articles/car-battery-load-test

Here is a guide to help you test the alternator:

https://www.2carpros.com/articles/how-to-check-a-car-alternator

Here are the alternator wiring diagrams so you can see which wires go where. Check out the images (below). Let us know how it goes.


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Aug 14, 2024 at 4:20 PM
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BHAMDOC1973
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Not solved yet. Changed the battery but i still have a battery light and the charging is over 13.
Aug 17, 2024 at 2:07 PM
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STRAILER
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It sounds like you need to do a battery monitor reset.

Here is a guide to help:

https://youtu.be/ETNv2S_idIU?si=BZPj8NUX1Wicemd-

Also, have you run the FCAN scan?
Aug 19, 2024 at 8:45 AM