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Old 11-09-2019, 05:11 PM   #1
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Alternator problem

My alternator light came on in my 2004 Boxster S. While the car was running I measured 14.5 volts at the battery and when the car was off I measured over 12 volts. The car was running fine. I went ahead and had the alternator rebuilt and the shop refreshed everything and installed a new regulator. I put everything back together and The light still comes on. I'm not sure how to diagnose further. Any suggestions?

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Old 11-11-2019, 10:11 AM   #2
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DH, have your battery checked, it might not be accepting the charge. I recently went through this and replaced the alternator, but did not change the battery. I got stuck on the freeway because my battery would not take the charge. Depending on the condition of your battery, it might be a good time to replace it.
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Old 11-11-2019, 11:45 AM   #3
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Don't forget to check the alternator/starter distribution block under the engine cover (next to power steering reservoir).
The nut can loosen and cause this type of issue.


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