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.

3G upgrade issues

Old 09-03-2017, 07:46 AM
  #1  
my65coupe
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Default 3G upgrade issues

i just completed the alternator upgrade on my 89 gt
but not sure if working properly.
Thr charging is above 14v when driving but at idle dips down into the sub 12v range. Is this common?

what I used
3G remanufacture alt from 95 mustang (tested fine)
6 gauge wire to the starter solenoid
150amp inline fuse
jumper wire to the stator connnector
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Old 09-06-2017, 03:27 PM
  #2  
dawson1112
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what is your car idling at and do you have underdrive pullys on it?
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