5.0L (1979-1995) Mustang Technical discussions on 5.0 Liter Mustangs within. This does not include the 5.0 from the 2011 Mustang GT. That information is in the 2005-1011 section.

battery keeps dying

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Old 07-15-2012, 09:37 AM
  #1  
daddillylee
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Default battery keeps dying

Problem here. 79 mustang 302. Replaced battery. alternator. Solonoid. Key tumbler.the only thing I haven't changed is the ignition switch next to tumbler. Car runs great but next day go out to start it and its totally dead. Could ignition switch be causing that..sometimes I have to turn key five times for it to start. Any help would be great
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Old 07-15-2012, 11:09 AM
  #2  
Nightriderstang
 
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The ignition could be it if the car isn't turned off right or if it's not functioning properly and have you tried a new convayer belt
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Old 07-15-2012, 02:05 PM
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mattdel
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What do you mean totally dead? Are you saying you have to cycle the key 5 times before anything turns on electronically? Or you have to try to start it 5 times before it'll fire up.
Big difference.
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Old 07-15-2012, 02:05 PM
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enfausn
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You need to verify were the draw is coming from. Put your voltmeter in-line on the positive battery terminal and start pulling fuses till the draw goes away. Put the fuse back in. Then narrow down what's in that ciruit and disconnect things till the draw goes away. That's what you gotta change to solve the problem........If it's killing it in one night it's gotta be a big draw.
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Old 07-15-2012, 02:17 PM
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mjr46
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Originally Posted by enfausn
You need to verify were the draw is coming from. Put your voltmeter in-line on the positive battery terminal and start pulling fuses till the draw goes away. Put the fuse back in. Then narrow down what's in that ciruit and disconnect things till the draw goes away. That's what you gotta change to solve the problem........If it's killing it in one night it's gotta be a big draw.
^^^^^^^^this, except make sure DVOM is sent to amps not volts
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Old 07-15-2012, 02:23 PM
  #6  
enfausn
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whoops, forgot to mention that.....thanks!
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