Help dead battery
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Elder User
Joined: Jan 2012
Posts: 777
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Help dead battery
My Ex did this to me a few months ago 2 days in a row and then didn't do it again until now...
Battery is almost new and alternator charges fine but every once in a while when it sits it drains the battery. I can hear an audible click and rumble coming from the front end behind the drivers side headlight under the air intake.
I've got a boost coming but I'd like to be able to start her up again to go to work later.
Battery is almost new and alternator charges fine but every once in a while when it sits it drains the battery. I can hear an audible click and rumble coming from the front end behind the drivers side headlight under the air intake.
I've got a boost coming but I'd like to be able to start her up again to go to work later.
Post Fiend
Joined: Apr 2002
Posts: 19,311
Likes: 97
From: Waterloo, Iowa
Well the battery "was" almost new. Not anymore. Yes, that sucks. In fact the battery "may" be junk now. Discharging an auto start battery, even a couple times, kills them quick.
What you want to do is perform a parasitic load test and find out what's drawing down excessive. Power door locks, rear wipers, aftermarket sound systems are the usual suspects. You'll need a digital voltmeter that measures milliamps. Keep the battery on a charger till you get that sorted out (assuming it passes a load test and isn't shorted out internally, etc) It's important to remedy this because a bad battery can damage a good alternator.. Which will eventually damage a good battery, which.. Well you get the idea.
What you want to do is perform a parasitic load test and find out what's drawing down excessive. Power door locks, rear wipers, aftermarket sound systems are the usual suspects. You'll need a digital voltmeter that measures milliamps. Keep the battery on a charger till you get that sorted out (assuming it passes a load test and isn't shorted out internally, etc) It's important to remedy this because a bad battery can damage a good alternator.. Which will eventually damage a good battery, which.. Well you get the idea.
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