Battery will not stay charged

2000 CHEVROLET IMPALA
225,000 MILES • 3.4L • 6 CYL • 2WD • AUTOMATIC
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SAMGREW
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  • 54 POSTS
Replaced alternator when first started fine, then a few minutes battery light comes on and battery will drain out. Also replaced battery, no change. Also only code is fan control.
Jul 21, 2021 at 8:44 AM
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SQM
  • CERTIFIED EXPERT
  • 6,383 POSTS
Hello,

Almost sounds like a wiring issue.
Have you got a chance to make sure the main charging wire from the alternator to the battery is in good condition and attached securely? If not take a look at that wire as well as the battery terminals.

https://www.2carpros.com/articles/how-a-car-electrical-system-works

I have attached the charging system wiring diagram for your reference. Also included diagnostics steps.

Please let me know if you are able to get this resolved.

Thank you.
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Jul 21, 2021 at 5:28 PM
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SAMGREW
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  • 54 POSTS
Found broken wire. Replaced it. Everything working great. Thank you very much.
Jul 23, 2021 at 10:47 AM
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SQM
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  • 6,383 POSTS
I am glad you were able to fix.
Feel free to reach out to me if you have any questions.
Thank you.
Jul 23, 2021 at 10:38 PM