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Old 10-08-2008, 07:43 AM   #286 (permalink)
Joseph Davis
Join Date: May 2008
Location: ashEVILle, NC
Posts: 35

Beater Deluxe v2.0 - '89 Honda Civic DX
90 day: 44.68 mpg (US)
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Sorry to bump this up from the relative stoneage, but it appears no one ever addressed this.

Originally Posted by AndrewJ View Post
P.P.S. - I think somethin's up with the alt-kill switch. It may not be "killing" the alternator completely. No matter the battery voltage when the car is off, when running and alt-killed the voltage hovers in the 12.3-12.7 range.
I even tried running the headlights, rear defroster, fan, radio, etc.... No voltage dip. I'll just have to run it killed for a few days and see what happens.
There is nothing wrong with your alternator kill switch. Car batteries are 12.8 volts when fully charged, not 12.0 volts.

But, as you've discovered, the majority of the loss in the charging system is from the belt drive.
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