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Battery dies when ca is left off for 3-4 hours or more.

Tiny
MIAH61068
  • MEMBER
  • 1988 OLDSMOBILE TORONADO
  • 155,000 MILES
Car will start after running for about 15-20 minutes. Left off longer than that it will die. Ive tested the Neg post and cable in series and have a.01 mA draw
Monday, November 14th, 2011 AT 10:34 PM

9 Replies

Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,867 POSTS
If you only have a.01 mA draw, that isn't the problem. How old is the battery?
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Monday, November 14th, 2011 AT 11:28 PM
Tiny
MIAH61068
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About a week old. Im so stumped by this one :(
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Monday, November 14th, 2011 AT 11:45 PM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,867 POSTS
There has to be more of a draw to kill it that fast. Check the diodes in the alt.
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Tuesday, November 15th, 2011 AT 12:07 AM
Tiny
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How do I do that? Lol Alt isnt even a year old yet either. But ill check em
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Tuesday, November 15th, 2011 AT 1:15 AM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,867 POSTS
Have it tested at a parts store. The diodes are designed to allow power to travel in one direction. If they are bad, power will draw to ground.
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Tuesday, November 15th, 2011 AT 1:23 AM
Tiny
MIAH61068
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Had it checked about 3 months ago when the issue started but ill take it tomorrow and check again
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Tuesday, November 15th, 2011 AT 1:46 AM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
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You know, it is an idea. However, with all the more draw you are seeing, the battery shouldn't go dead. Something must change the draw after sitting for some time.
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Tuesday, November 15th, 2011 AT 2:11 AM
Tiny
MIAH61068
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But drain the battery dead that fast. Within a couple hours its dead. Taking it to autozone tonight
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Thursday, November 17th, 2011 AT 12:14 AM
Tiny
JACOBANDNICKOLAS
  • MECHANIC
  • 109,867 POSTS
Let me know what you find. Something isn't making sense to me. With that small of a draw, it shouldn't kill the battery. Disconnect the battery and see if it goes dead on its own.
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Thursday, November 17th, 2011 AT 4:52 AM

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