1993 Buick Lesabre battery going dead

Tiny
FREEMAN EVANS
  • MEMBER
  • 1993 BUICK LESABRE
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 145,000 MILES
I have a problem with the battery loosing it's voltage. I have a new alternator and battery. We may drive the car for serval weeks some times without any problem, then all at once it will not start. To me it acts like a relay or something like that that is sticking at times, but cannot find problem.
Saturday, March 6th, 2010 AT 11:23 AM

1 Reply

Tiny
ERNEST CLARK
  • MECHANIC
  • 1,730 POSTS
First, with the engine running, use a DVOM to measure voltage across your bat terminals. This will verify that your alternator is recharging the bat.

If you get anything less than 13.5 volts, check your wiring/connectors/bat terminals for corrosion or looseness.

If you're bat is getting charged correctly, then you have something drawing current when your car is shut off. You'll have to use your meter to check each circuit at the fuse box to trace that down.
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Wednesday, March 10th, 2010 AT 8:10 AM

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