1992 blazer

1992 CHEVROLET BLAZER
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THEBLAZERONE
  • MEMBER
  • 1 POST
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
Oct 13, 2007 at 5:05 PM
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RASMATAZ
  • ✓Experienced 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.
Oct 14, 2007 at 12:09 AM
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