Mechanics

WHAT IS MALFUNCTIONING IN MY CHARGING SYSTEM?

1989 Subaru GL • 216,000 miles

I've replaced my alternator and I, m still only getting 12 volts at the battery. The cables appear to be good. I'm getting 18 volts at the alternator at an idle.
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Steveski
October 22, 2011.



The battery voltage should be the same at the battery and alternator batt terminal-18 volts the alternator is overcharging the battery-check for loose connections

Rasmataz
Oct 26, 2011.