ls1curt

iTrader: (31)

okay, so right before i covered my car for the winter, my car wouldnt start and my battery died. i charged it up but it wouldnt hold a charge and kept dying. i then covered it and was just gonna get a new battery during the winter. i got a new battery from napa and stuck it in and the car fired up perfect. i let it sit for about a month and today i went out to start it and the battery was totally drained, interior lights wont even come on. i do remember hearing a kinda buzzing noise when it was off/key was out, but i dont know what it was. no interior lights were on/headlights. wtf is draining my battery, it was really cold here last month and i think that my new battery is shot now.
anyone know what could be causing this?
thanks

Breathing Fire

Do you happen to have the factory 12 disk?

ls1curt

iTrader: (31)

nope, the car just has a aftermarket headunit, but its really wierd how it just started

ssdeuce74

iTrader: (2)

do a draw test if there is one pull fuses till it goes away then check that circuit

airforcemanss

iTrader: (23)

same thing happened to my beater (96 saturn) hopefully the alternator is the cure

ssdeuce74

iTrader: (2)

ah yes don't forget to check that my buddies went up on his too

SpiderX1016

http://flashoffroad.com/electrical/B...teryDrain.html

x2, You can use a DMM but I'd rather use a Test Light.

ls1curt

iTrader: (31)

okay, im thinking its my headunits(clock/memory) so im gonna try pulling the fuse for the radio and see if i dont get a draw anymore. its not the alternator cause i put a new battery in and ran the car for about 10 minutes and then let it sit for a month and the battery was dead

ssdeuce74

iTrader: (2)

the batt is goin to be dead from sittin a month well at least it could, might be normal alot of toyotas will kill a batt that quick sorry for the comparison but im a toyota tech

johnLs1camaro

iTrader: (28)

man I have the same issue, Ive checked everything and cant figure the damn thing out.. usually If my car sits for 4 days or so the battery is dead.. Thats with a new battery also.

ssdeuce74

iTrader: (2)

try unhookin the batt wire to the radio if its a big aftermarket unit theres always a full time hot wire

02v8ta

iTrader: (8)

i can't let mine sit for more then a few days without the battery dying, found this out last winter. I thought and was told it's from the small but constant pull of some power for the radio and w/e else would call for power from the car while being off? That with the 10 or 20 degree nights made sense.

Your suppose to be able to let your car sit a month in freezing weather and have it fire? doesn't make sense to me.

ls1curt

iTrader: (31)

okay im thinking its the radio, will test it today. and yes i do think you shoud be able to let it sit a month with a new battery and still start. my brothers mustang w/ an aftermarket headunit sat for the whole winter without the battery going dead

ssdeuce74

iTrader: (2)

all depends on how many computers are in the car each one has a constant draw for memory my nova can sit that long but its carburated do you know how to do a proper draw test should be under 50 ma

tom falco

Draw test the car and post the results. If you have for examole a 500MA draw the car will draw down 1/2 amp all the time. You can do the math and figure out how long the battery will last from the batterys capacity and the temperature outside. Most modern vehicles will deaw down from 50 MILLI AMPS to 200 MILLI amps. That is for radio clock ETC. Toyotas drain pritty good . What do you expect from THEM. I have many toyota owners complain about draw down. Nissan also has a high draw down also. Remember the ECM is always drawing down to keep the monitors SET. Most of the time the draw down is the audio equiptment or a lamp like GLOVE OR TRUNK ETC that is not suposed to be on. You have to test it and PULL FUSES. Hope this helps TOM

ssdeuce74

iTrader: (2)

hell we have up to 20 computers in our toyotas which is why its stupid

ls1curt

iTrader: (31)

okay pulled the radio fuse and its not that. didnt get to do a amp test but i will do one soon and post what i get. i can hear something buzzing when the cars off and it sounds like its coming from the computer(pcm) but i dont know for sure. i just disconnected my battery for now