2006 Jeep Commander Q&A

2006 Jeep Commander Question: common faults on alternator.

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 -
Answer 1
sounds like a bad regulator in alt and poss a bering issue also -
Answer 2
PCM regulated ,maybe have scanned to watch for proper control. Pulley poss. is 'clutched' that or bearing ,as globalhelper mentioned may also be faulty. -