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1996 Chevy Blazer battery

Tiny
OMNF
  • MEMBER
  • 1996 CHEVROLET BLAZER
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 10,400 MILES
Have trouble starting car in morning. Battery seems to have drain off during night. Went to check battery terminals and when I remove the negitive side it spark. Left it disconnected and put a light across the negitive post to the negitive cable and the light came on.
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Friday, January 2nd, 2009 AT 8:53 PM

3 Replies

Tiny
BUDDYCRAIGG
  • MECHANIC
  • 2,262 POSTS
Ok. You're light proves you have a power drain.

Leave the light hooked up between the cable and the battery and start pulling every fuse out until the light goes off.

Then research that circuit.
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Friday, January 2nd, 2009 AT 9:03 PM
Tiny
OMNF
  • MEMBER
  • 2 POSTS
Pulled all fuses inside and the only one that did anything was the park lights. Dim a little but the light did not go out
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Friday, January 2nd, 2009 AT 10:14 PM
Tiny
BUDDYCRAIGG
  • MECHANIC
  • 2,262 POSTS
Now you have to start unplugging stuff.

I have seen some alternators do this. The bridge rectifier shorts and the windings have power going through them when the engine is off.
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Friday, January 2nd, 2009 AT 10:24 PM

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