why is charging light coming on at 3000 rpm

2000 FORD F-150
120,000 MILES
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BRETTD
  • MEMBER
  • 1 POST
charging gauge stays in center of proper range at all times. will go back out as soon as drops below 3000 rpm. had no issue with starting or operating any devices( wipers, lights,ect.)
Mar 30, 2012 at 3:28 PM
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RASMATAZ
  • ✓Experienced Mechanic
  • 75,988 POSTS
Have the charging system checked to rule out a failing alternator
Mar 30, 2012 at 3:40 PM
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