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.

electical issue

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Old Sep 25, 2008 | 08:44 PM
  #1  
mustangt95's Avatar
mustangt95
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Joined: Aug 2007
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From: Texas
Default electical issue

i have been have a problem wiht my altenator shorting out. ive been though 4 in a year.
it all started after i had my stereo system professionally installed. since then it is just messed up. i currently have everything disconnected.
i have a 300 watt amp
upgraded speakers
and a dual deck
ive checked most of the grounds a can find and had it looked at by a shop. it always happens with headlihgts and foglights on. it has resontly occurred with lights on, vent running, and rear defrost when battery gauge drops, and checked out put to be from 8 to 10 volts. when i turn it all off its back to normal around 12 to 14.
anyone have any ideas, cus it sucks not having any music and replacin the altenator all the damn time.
thx
Old Sep 25, 2008 | 09:33 PM
  #2  
PRO50SC's Avatar
PRO50SC
The Rogue Mod
 
Joined: Feb 2006
Posts: 21,918
From: Maryland Sucka's!!
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What type of alt are you using and have all the replacements been the same brand. Sounds like you're overloading it w/ all the accessories running at one time.
Old Sep 25, 2008 | 09:38 PM
  #3  
mjr46's Avatar
mjr46
D.R. THE PATHETIC DORK
 
Joined: Jun 2007
Posts: 30,871
From: West Virginia
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if you are trying to run all the accessories and your boom shaka laka box off the stock alt...I'd do a 3g conversion for more availible output to drive your accessories
Old Sep 25, 2008 | 11:14 PM
  #4  
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mustangt95
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Joined: Aug 2007
Posts: 30
From: Texas
Default

im using the oem alternator. everything has been same brand or better.
and i dont have any subs. its just speakers in doors and back through a small amp,
i dont even have any of this hooked up rightnow and it still does it.
should you be able to run all this **** at one time with no problem. i had a 91 mustang with a 2000 watt amp and 2 12s i wired up my self and never had a problem.
its like the pros f***** it up or i have a lose ground somewere.
Old Sep 25, 2008 | 11:18 PM
  #5  
mustangt95's Avatar
mustangt95
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Joined: Aug 2007
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From: Texas
Default

its a oem alternator from advance. im thinking about buying a stronger one from online or something.
i dont have a box, its just speakers through the amp, i did a big system with 12s on my 91 and never had a problem. could it be grounds or what.

what is the 3 g conversion??? were can i find more about it?
Old Sep 26, 2008 | 01:29 AM
  #6  
mstngsule68's Avatar
mstngsule68
4th Gear Member
 
Joined: Apr 2008
Posts: 1,025
From: milwaukee NOT THE GHETTO PART
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go buy a summit 1 wire 140amps. http://store.summitracing.com/partde...5&autoview=sku
Old Sep 29, 2008 | 07:00 PM
  #7  
chrisfnmac911's Avatar
chrisfnmac911
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Joined: Aug 2006
Posts: 92
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have you ever found a solution to your problem? im having the exact same problem
Old Sep 29, 2008 | 09:20 PM
  #8  
mustangt95's Avatar
mustangt95
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Joined: Aug 2007
Posts: 30
From: Texas
Default

no solution so far. im completing dumbfounded on this problem. its really frustrating cus i have to continuesly have to what the guages
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