Battery drain

Tiny
KBCOBRA21
  • MEMBER
  • 2001 OLDSMOBILE AURORA
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 100,000 MILES
I have a 2001 olds aurora, and the battery keeps draining overnight. I checked for a parasitic drain and its within spec at 30mA. The battery tests good and the alternator output is ok. Also when you start the vehicle you have to wait for a solid security light on the dash before it will crank. Do you know of any problems that night be causing this battery to drain?
Wednesday, December 15th, 2010 AT 4:21 PM

2 Replies

Tiny
MHPAUTOS
  • MECHANIC
  • 31,937 POSTS
Did you check the alternator for feed back, a faulty diode will do this and drain the battery, it will still give you a charge rate albeit a bit lower than normal.

Mark(mhpautos)
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Monday, December 20th, 2010 AT 9:38 AM
Tiny
FOREVERLSU3
  • MEMBER
  • 1 POST
I am having this same problem. My question for "mhpautos" is, I have replaced my alternator and the battery is still draining within 24 hours.
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Friday, December 30th, 2011 AT 12:33 AM

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