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
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2006 Jeep Commander Question: common faults on alternator.
Answer #1Greg's Orange Auto (10955 Answers) , Orange, CA - (714) 361-9355globalhelper October 22, 2012, 12:55Master
sounds like a bad regulator in alt and poss a bering issue also
Answer #2ziptie12 October 22, 2012, 17:42Master
PCM regulated ,maybe have scanned to watch for proper control. Pulley poss. is 'clutched' that or bearing ,as globalhelper mentioned may also be faulty.