Take the 2-minute tour ×
Motor Vehicle Maintenance & Repair Stack Exchange is a question and answer site for mechanics and DIY enthusiast owners of cars, trucks, and motorcycles. It's 100% free, no registration required.

On Friday, my girlfriend's '97 Ford Explorer v6 lost electrical while driving. We were able to get it going again with a jump start. Lost electricity (lights / gauges) while driving, but were able to drive it the rest of the way home. Battery was dead in the morning.

I tested the battery and the alternator - both were shot (stock alternator, 3 year old battery), so I replaced both. Yesterday, she called me from work and said her car started, shuttered, and died. However, it started up after waiting a few minutes.

This morning, she called and said it was completely dead. No lights/windows/power locks, and no cranking. Wouldn't even start with a jump, though I'm not sure if she jumped it correctly.

On to my question: Is there something else that could be draining a brand new battery? I found something on another Q&A site saying something about the connectors on the alternator, but I know I tightened down all the connections, and they had good contact.

Thanks in advance.

share|improve this question
add comment

1 Answer

First thing to do is to check for short circuits. With the battery fully charged and nothing switched on, pop an ammeter on the battery and measure the power draw - there will be some to power the alarm & radio preset, but that should be pretty tiny. If there is a large draw, you've got a short and the tedious job of tracking it down begins...

share|improve this answer
add comment

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.