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Headlights dimming while driving?

Tiny
MSTEVE
  • MEMBER
  • 2001 BUICK CENTURY
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 85,000 MILES
When driving all interior lights and headlights go dim and then go bright again and again. I have replaced the battery already and it did not help. Any advice would be greatly appreciated.

Thank you
Tuesday, January 22nd, 2008 AT 4:55 PM

2 Replies

Tiny
MASTERTECHTIM
  • MECHANIC
  • 4,750 POSTS
Sounds like a bad alternator or a loose ground.
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Tuesday, January 22nd, 2008 AT 6:33 PM
Tiny
DGOOGIN88
  • MEMBER
  • 5 POSTS
Like mastertechtim said, its with the alternator, more specifically the voltage regulator inside the alternator. They are $20 at autozone and is way cheaper than buying a new alternator. If you need instructions on how to change it, let me know
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Sunday, January 11th, 2009 AT 8:50 PM

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