battery died on 1990 Chevrolet Lumina

battery died when car is off something is draining the battery

by in New York, NY on April 27, 2010
Get Your Car Fixed at a RepairPal Certified Shop.
We certify shops based on expertise, quality work, and verified customer reviews
1 answer
ANSWER by , December 19, 2010
do you have a tereo or amp that is not being turned off when the key goes off you could also have a bad voltage regulator charging the battery when running but running the bat voltage backwards thru the diodes in the alt regulator to ground check after the car is cold and see if the alt is still warm,indicating a shorted voltage regulator/alternator