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1992 Blazer

Tiny
THEBLAZERONE
  • MEMBER
  • 1992 CHEVROLET BLAZER
Im confused why my battery dont stay charged while the car is running, yet I can leave it connected and the car will always start? I pull either of the cables off and the car dies out? I had the altenator tested and it is good please help thanks alot
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Sunday, October 14th, 2007 AT 12:05 AM

1 Reply

Tiny
RASMATAZ
  • MECHANIC
  • 75,992 POSTS
Read the open voltage of the battery before you start it should be 12.4 volts or better. Now start it should read between 13.5 - 15.5 volts, if not either the alternator is not charging the battery or the battery is not taking the charge.
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Sunday, October 14th, 2007 AT 7:09 AM

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