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  • SN95 4.6L Mustang Tech

Draining my battery!!

  • Thread starter Thread starter botlefed1
  • Start date Start date May 11, 2006
B

botlefed1

New Member
Jan 12, 2006
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May 11, 2006
#1
  • May 11, 2006
  • #1
Hey, my battery went dead over the weekend a while back, and i figured i just left the headlights on or something so i bought a new battery and put that in. Ran fine and i let the car sit for maybe 2 or 3 days and it went dead again. does anyone know what is draining my batteries down??
 

Built98GT

New Member
Oct 17, 2005
211
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0
OKC
May 12, 2006
#2
  • May 12, 2006
  • #2
Bad alternator
 

loosescrew79

New Member
Dec 18, 2004
313
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May 12, 2006
#3
  • May 12, 2006
  • #3
Start by checking any after market electronic accessories. Those usually cause a drain first.
 

Mike97gt

it doe snot
Founding Member
Jan 26, 1999
10,633
7
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the people's republic of massachusetts
May 12, 2006
#4
  • May 12, 2006
  • #4
loosescrew79 said:
Start by checking any after market electronic accessories. Those usually cause a drain first.
Click to expand...

+1 aftermarket alarms and stereos are the most common cause of a draw. remember you have to keep a constant contact fromt he moment you disconnect the battery to get a accurate amps reading on a mutlimeter. IF at anytime the battery is disconnected fully without a jumper keeping contact you will "wake" up all the modules and get a false reading.
 
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botlefed1

New Member
Jan 12, 2006
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May 12, 2006
#5
  • May 12, 2006
  • #5
ok, i guess i can take the car down to auto zone and have them test the alternator. is there a specific test i can do to check the alarm and cd players?
 

loosescrew79

New Member
Dec 18, 2004
313
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May 12, 2006
#6
  • May 12, 2006
  • #6
The easiest way would be to disconnect one thing and wait and see what happens.
 

03ghoststang

Well-Known Member
Jul 16, 2005
1,930
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57
Los Angeles, California
May 12, 2006
#7
  • May 12, 2006
  • #7
svttech76 said:
+1 aftermarket alarms and stereos are the most common cause of a draw. remember you have to keep a constant contact fromt he moment you disconnect the battery to get a accurate amps reading on a mutlimeter. IF at anytime the battery is disconnected fully without a jumper keeping contact you will "wake" up all the modules and get a false reading.
Click to expand...


your talking about him doing an amp draw test yup that would be a good way to see how many amp's is being drawn out while the car is sitting
 
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