If his voltage drop is doing this & there is a 1.5v drop then why when he revs the engine does the voltage continue to climb? the regulator should limit it to the 1.5v above it normal limit IE max 16v but in reality most single wire systems limit around 14.2 plus 1.5 would be 15.7... Instead his will climb past 16v...
Good point. I'll probably also replace the regulater next week. It looks fairly new, but I can't recall if I replaced it two years ago when I bought the car. This car has not been driven since 1988, so I'm not surprised by anything that crops up. (Extremely disappointed, but not surprised)
