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1999 Hyundai Sonata Headlights blown and battery cooking

Tiny
JUSTUSINSTPETE
  • MEMBER
  • 1999 HYUNDAI SONATA
Electrical problem
1999 Hyundai Sonata 4 cyl Two Wheel Drive Automatic

Headlamps blown, alternator replaced, started blowing out headlamps, new alternator putting out too much voltage was replaced again, 1 week later headlights blown again, fuses are good, battery getting cooked; what is causing headlights to be blown and battery to be cooked?
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Sunday, September 26th, 2010 AT 10:45 AM

1 Reply

Tiny
KHLOW2008
  • MECHANIC
  • 41,815 POSTS
Hi justusinstpete,

Symptoms indicates the alternator is overcharging causing the problem.

It could be a faulty alternator or PCM, which is linked to the charging system.
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Sunday, September 26th, 2010 AT 12:47 PM

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