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Q: common faults on alternator. on 2006 Jeep Commander

Rookie cbe0621eac06868b3efe0d8d1d3611e23c60d3114864ea2ec19a68cfbd3eebab
my alternator charge light comes on and only goes off at high revs,>3000 also makes whinning noise which continues and dies down after engine stops
(2) Answers
PCM regulated ,maybe have scanned to watch for proper control. Pulley poss. is 'clutched' that or bearing ,as globalhelper mentioned may also be faulty.
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