1997 Cadillac EL Dorado SOMETHING IS DRAINING THE BATTERY

Tiny
BILLY JAY
  • MEMBER
  • 1997 CADILLAC ELDORADO
  • V8
  • FWD
  • AUTOMATIC
  • 140,000 MILES
I HAVE A NEW BATTERY NEW ALTERNATOR SOMETHING HAS CAUSED MY POWER WINDOWS SUNROOF NOT TO WORK ALSO WHEN TURNING OF ENGINE SOMETHING IS DRAINING THE BATTERY QUICK LESSED THAN 5 MIN. PUT WILL START RIGHT UP WITH A JUMP BATTERY STAYS CHARGERED PUT WINDOWS ETC WON'T WORK
Tuesday, November 9th, 2010 AT 10:14 PM

1 Reply

Tiny
FACTORYJACK
  • MECHANIC
  • 4,159 POSTS
For it to discharge the battery in 5 minutes, it is a large draw. I would look for something obvious for starters. Something like a stuck seat switch, or faulty alternator. Was the drain present before the alternator was replaced? You could almost crank an engine off and on for 5 minutes and not fully discharge a good battery. Something of that size, you would almost not want to connect an ammeter in series, as it would blow the meter fuses. You might be able to connect a test light in series, and pull fuses looking for the change. Upon looking at the schematic, the windows circuit breaker in the LH underhood fuse block, powers both the windows, and the sunroof. Check this circuit breaker. If it is warm, it may be tripping due to a short in the circuit, or a stuck item like a switch.
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Tuesday, November 9th, 2010 AT 11:31 PM

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