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Battery draining issues.
http://4g61t.org/forum/viewtopic.php?f=22&t=36212		 Page 1 of 1
Author:  Ninjaneonturtle [ Sun Mar 25, 2012 9:55 pm ]
Post subject:  Battery draining issues.
So my battery keeps going dead if the car sits. Basically if I don't drive it for a week. I have an Optima redtop in it and its obviously not the battery. It is a slow drain and I'm not sure where to check first. My charging system is just fine and I have a solar charger hooked up to my power outlet. I know on DSMs when I had them, the door switch would be a common cause. Anybody have any other ideas before I go around aimlessly with my multimeter? Thanks
Author:  kaeser1 [ Mon Mar 26, 2012 8:54 am ]
Post subject:  Re: Battery draining issues.
Check to see if anything has power when the ignition is in the off position....

Dome light, hatch light, radio, door locks or windows (if you have them)...

Do you have a subwoofer and amplifyer in the car? Those could drain the system if there is not remote wire hooked up to the amp.
Author:  Ninjaneonturtle [ Mon Mar 26, 2012 11:31 am ]
Post subject:  Re: Battery draining issues.
Quote:
Check to see if anything has power when the ignition is in the off position....

Dome light, hatch light, radio, door locks or windows (if you have them)...

Do you have a subwoofer and amplifyer in the car? Those could drain the system if there is not remote wire hooked up to the amp.
Just have a dome light and radio to check then :lol:

No audio system though, I've done my MECP cert. I'm thinking most likely it is the radio, but perhaps a mistake on Mitsubishi's part for giving a power wire that drains the battery since it it all hooked up correctly via an adapter harness.
Author:  turboshawn [ Tue Mar 27, 2012 11:36 am ]
Post subject:  Re: Battery draining issues.
I had a run of bad alternators once and also check the battery cables to see if they are tight.
Author:  fastvtgsx [ Tue Mar 27, 2012 6:50 pm ]
Post subject:  Re: Battery draining issues.
Can you see the voltage drop if you hook your meter up to the battery? If you can the simplest way I've figured out is topull a fuse, one at a time and see if the voltage continues to drop. If you pull one and it stops then that circuit is your draw. From there you just track it to the source. I would also have your battery tested. I see a lot of optima batteries coming in dead lately.
Author:  theslo1 [ Tue Mar 27, 2012 7:09 pm ]
Post subject:  Re: Battery draining issues.
Get a friend and a test light, disconnect the neg batt cable, clamp the ground wire of the light to the neg post of the batt, touch the neg cable with the probe, if it lights up and stays on, you have a drain. Now have your friend hold the light, and one at a time you pull a fuse or relay, when the light goes out that's the circut with the drain. sometimes the light will come on for a second and go off, i'm not exactly sure why it does, but I don't think that's a drain
Author:  Mechacode [ Thu Mar 29, 2012 2:20 am ]
Post subject:  Re: Battery draining issues.
Stick an ammeter between the battery and the cable, then start pulling fuses until the meter drops to zero.
Author:  Ninjaneonturtle [ Thu Mar 29, 2012 4:54 pm ]
Post subject:  Re: Battery draining issues.
Those are all good ideas. I will definitely try them and report back! Thanks!
Author:  joemoto [ Fri Mar 30, 2012 12:57 pm ]
Post subject:  Re: Battery draining issues.
I had a red top refuse to hold a charge after it discharged while sitting on a shelf. It is not uncommon; I charged it and came back to measure it everyday and it discharged internally.
Author:  Ninjaneonturtle [ Tue Apr 10, 2012 7:12 pm ]
Post subject:  Re: Battery draining issues.
Quote:
I had a red top refuse to hold a charge after it discharged while sitting on a shelf. It is not uncommon; I charged it and came back to measure it everyday and it discharged internally.
Tis is what happened t my red top. They replaced it for free. Car runs so much better. I also threw on a new coil, ignitor, wires and plugs. Purring like the 80's.
Author:  Mechacode [ Wed Apr 11, 2012 1:17 am ]
Post subject:  Re: Battery draining issues.
Red tops are hit/miss. Bought one for 170 about 5 years ago, still holds a charge.
Author:  Ninjaneonturtle [ Wed Apr 11, 2012 4:28 pm ]
Post subject:  Re: Battery draining issues.
Quote:
Red tops are hit/miss. Bought one for 170 about 5 years ago, still holds a charge.
This is true now because of my incident. I had the red top last in my neon for a good 6 years to tell you the truth.
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