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.

Dead battery issue

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Old 11-24-2007, 11:43 PM
  #1  
84conversion50
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Default Dead battery issue

i have an 84 v6 body mustang i just picked up. it was converted to a 5.0. The problem is the battery will run itself dead whether the car is on or off but the altenator shows to be charging. Is there a fuse i should be looking for? or just a dead short?
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Old 11-24-2007, 11:47 PM
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c4king
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Default RE: Dead battery issue

i have had a starter solenoid go bad and make the battery rum dead when driving
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Old 11-24-2007, 11:48 PM
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84conversion50
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Default RE: Dead battery issue

was it enough to run it dead and kill it while the motor was running?
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Old 11-25-2007, 12:21 AM
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stanks347
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Default RE: Dead battery issue

Do you have an aftermarket radio??? Take a votage read @ alt. to see if it is charging.
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Old 11-25-2007, 12:24 AM
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84conversion50
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Default RE: Dead battery issue

its not my car yet but will be in the morning, it does not have a radio but there is a decent draw when the car is off ??dead short somewhere?? i havent checkd the charging voltage but when you rev the engine the voltage meter goes up to about 13.5 to 14 v
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Old 11-25-2007, 12:45 AM
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stanks347
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Default RE: Dead battery issue

Does it have auto windows and such??
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Old 11-25-2007, 12:47 AM
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84conversion50
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Default RE: Dead battery issue

no im thinking its the headlight switch but maybe not.
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Old 11-25-2007, 12:51 AM
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stanks347
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Default RE: Dead battery issue

Car alarm or any trick B/S??
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Old 11-25-2007, 12:55 AM
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Default RE: Dead battery issue

How's the belt tension????
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Old 11-25-2007, 01:05 AM
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84conversion50
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Default RE: Dead battery issue

no car alarms or anything i think its somewhere in the motors wiring. the coil pack contacts are really crappy. im not sure how your supposed to connect those, i may just solder them on so they got a good connection.
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