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Somthing is drawing power from my battery

Discussion in 'Diagnosis/Help' started by Wonderz, Nov 13, 2009.

  1. Wonderz

    Wonderz Well-Known Member Donated!

    Hey guys,

    So when working on my alternator i found that there was a draw on my battery when the car was turned off. What ever is drawing the power it must be slow because the car sat for 4 days and the battery still showed a full charge

    so I started to pull fuses from my engine bay 1 at a time to try and locate the problem. I removed every fuse but the alternator one (it was stuck) and there was still a power draw ugh

    so I then disconnected the alternator itself. and still there was a power draw @_@

    so I guess this weekend I’ll start pulling fuses from under the dash and see if I can find it there

    so here are my questions.

    1) Besides the alternator does anything else use the alternator fuse?
    2) I only know of 2 fuse boxes inside the car (under the dash passenger and drivers sides. am i missing any?
     
  2. sega01

    sega01 Guest

    Surprising it's kept up after all of those fuses. I can suggest one practical thing though, which should have been taken off with the fuses: alarm system? My GT-S has one, and 'm sure there is a slight draw from it. Not sure if you have one or not though. You didn't miss a fuse and have the door open, right? ;-)

    Good luck.

    --Teran
     
  3. Stig

    Stig ST162 Guru Donated!

    I think it could be your ECU, they don't have a battery inside,
    many radios will also draw a small current when switched off,
    or check if there are any extra wires to the + terminal (alarm, amp, spots etc)
     
  4. Seank90

    Seank90 Well-Known Member Donated!

    how much of a draw are you thinking of? if your batterys toast it mightnt hold a charge that well?
     
  5. Wonderz

    Wonderz Well-Known Member Donated!

    the only Extras i have hooked up are an amp, and the Starter fix.

    At first I thought it was the amp, as I unhooked everything but that. and it did show a residual charge at first, then it dissipated an never came back (I was checking over a period an hour)

    When I was checking the fuses i only had the stock Positive wire hooked up to the battery.

    the draw seemed to fluctuate

    this was my first time using a multimeter but it was showing anywhere from -7.00 to -12.00 when i had it set to "DCV"


    if its my ECU should i be worried? how would i check it?
     
  6. Seank90

    Seank90 Well-Known Member Donated!

    well an ecu only takes a minute current so i wouldnt think thats it... is your radio memory working ok?? and what type of radio have you got? i know i saw a car with a crappy cheap radio and id did more bad than good!!
     
  7. Wonderz

    Wonderz Well-Known Member Donated!

    I got a Sony Xpload deck, was middle of the line, and its a 2005 model (not sure the model number) the radio memory works fine.
     
  8. Rick89GTS

    Rick89GTS Well-Known Member Moderator Donated!

    The radio/stereo is always drawing power for its memory, as is your car's clock. Unless it's draining your battery significantly, ie not enough juice left to start, I wouldn't be too concerned. Do you have any other devices hooked up that require memory?
     
  9. Wonderz

    Wonderz Well-Known Member Donated!

    nope that would be it, thanks for all the advice guys
     
  10. Seank90

    Seank90 Well-Known Member Donated!

    no prob!!! enjoy!!! :thumbsup:
     

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