1995 Isuzu Rodeo Question Fluctuating voltage

1995 ISUZU RODEO
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V-STAR07
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Electrical problem
1995 Isuzu Rodeo Question 6 cyl Four Wheel Drive Manual

I have replaced the alternator & I have a new battery. The voltage gauge reads about 12 volts when the truck is idling. When I push the acceleator the voltage goes up to about 16 volts. When I am driving down the road the voltage gauge goes back and forth between 12 & 16 volts and affects the way the truck runs. Also if I use the A/C, power windows, headlights, etc.. the voltage is pulled down below 12 volts.
Aug 29, 2010 at 6:05 PM
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RASMATAZ
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Get the alternator load tested if okay-inspect and test wiring and also the charge relay in the fuel/relay box
Aug 30, 2010 at 3:09 AM
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ROB KANDUTH
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i had a similar thing happened to me after going back to where i bought the alternater like six times with nothing wrong with it i had a wiring fire it turned out the alternator was in the wrong box for my truck or i have seen a short in the fuse boxes do it to or bad ground
Aug 30, 2010 at 4:08 AM
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