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.

alternator problems

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Old

10-21-2009, 07:52 PM

#1

lablvr

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Join Date: Aug 2009

Location: Kansas

Posts: 26

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alternator problems

I just put a 130 AMP alternator on my 91 mustang 5.0 and now the battery light is on I had to splice a wire and I ran it for 5 minutes and didnt have any problem so why is the light on and is it actually working

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Old

10-21-2009, 07:55 PM

#2

mjr46

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Join Date: Jun 2007

Location: West Virginia

Posts: 30,863

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to see if it's actually working, you'd need to do a load test with a Vat 40 or turn all accessories on and with an ammeter measure amperage output of alt

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