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2001 Ranger when I come to a stop the idle sometimes drops and the lights dime a little

Tiny
DEREK97116
  • MEMBER
  • 2001 FORD RANGER
  • 74,000 MILES
When I come to a stop the idle sometimes drops and the lights dime a little still does it after new battery tested alternator its good is there a fuse or maybe a small vacuum leak in the brake booster to cause this idk please help a brother out
Monday, September 10th, 2012 AT 2:56 AM

1 Reply

Tiny
CARADIODOC
  • MECHANIC
  • 33,871 POSTS
Sounds like you have an idle speed problem, not a charging system problem. AC generators are not efficient at slow speeds so you can expect lights to dim when the idle speed is low.
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Monday, September 10th, 2012 AT 6:03 AM

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