the alternator light came on and a week later it died ?

1996 DODGE RAM
21,600 MILES • V8 • 2WD • AUTOMATIC
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GARROJ4846
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I had my truck for a while and the alternator light came on and a week later it died so i got a new alternator and a new battery and it turn on but the check engine light was on and the alternator light was on and then a hour later it turn off so i replaced the battery and alternator again and it happen again i dont know what could be the problem please help me its my only vehicle and everyone i talk to has no reason why its not turning on and this is my last chance
Dec 12, 2008 at 1:10 AM
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RASMATAZ
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Sounds like the voltage regulator built into the computer is malfunctioning-


https://www.2carpros.com/forum/automotive_pictures/12900_regulator_5.jpg

Jun 23, 2021 at 9:26 AM
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GARROJ4846
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well dodge dealership said that the voltage regulator is built into the alternator so i dont know what else to do
Jun 23, 2021 at 9:26 AM
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RASMATAZ
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Have the alternator retested this time tell them to full field the alternator doing this will cause the alternator to throw out everything its got.
Jun 23, 2021 at 9:26 AM
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GARROJ4846
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i took the alternator in and they said its perfect that there has to me some other reason
Jun 23, 2021 at 9:26 AM
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RASMATAZ
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Earlier I've given you a diagram of your charging system. Could be a problem with the computer (Powetrain Control Module ) control of the field generation of the alternator. Have it checked out-
Jun 23, 2021 at 9:26 AM