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.

charging question

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Old 01-23-2008, 02:04 PM
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five0fm
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Default charging question

hey guys i just rebuilt my motor and put a new 3g alt on it. before i took the motor apart i was pushing around 14 volts all the time. as i was taking the alt off i accidentally touched the 4g wire to a bolt and it sparked ( stupid me forgot to disconnect the battery) anyway now all i can get out of it is 11volts. i cant remember if it happened before or after the spark mishap but when i turn on my electric fan the battery just drains and eventuallly the car shuts off..any ideas?
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Old 01-23-2008, 02:08 PM
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euromay
 
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Default RE: charging question

Good question! I waiting for answers as well.
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Old 01-23-2008, 02:39 PM
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PRO50SC
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Default RE: charging question

Well, have you checked your fuses? When you installed the 4g wire, didn't you run a 150 amp in line like you were supposed to? Where is the 4g wire coming from? Is there power (battery voltage) to it. Maybe you shorted the new alt
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Old 01-23-2008, 02:48 PM
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five0fm
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Default RE: charging question

the batt is in the trunk so i ran it to the starter solenoid and ill check the fuzes right now
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Old 01-23-2008, 03:04 PM
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Default RE: charging question

OK, but where does the wire come from the back of the alt? Is that the 4g wire or am I mistaken?
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Old 01-23-2008, 03:15 PM
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five0fm
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Default RE: charging question

no you are correct the 4g wire goes from the alt to the starter solenoid...but i jsut fixed it..what happened was i had stock gauges on when i first put the alt in...i changed them out to a florida 5.0 autometer set up and i didnt put the battery indicator feed to a 12volt source ( i didnt get instructions with the autometer pod) and i just looked on there site. apparently if that isnt connected your alt is an open circuit...anyway now that i fixd that im back to 14 volts now...one question...where is the cheapest place to get a 150 inline?
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Old 01-23-2008, 03:18 PM
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PRO50SC
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Default RE: charging question

http://www.partsexpress.com/pe/showd...number=071-952

That's where I biught my stuff from. Scroll down the page and there are fuse holders there too.
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Old 01-23-2008, 04:27 PM
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five0fm
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Default RE: charging question

thanks a lot pro...im gunna order them tonight
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Old 01-23-2008, 04:30 PM
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anytime
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