Tibur Waltson wrote:
>
> Today I load test the alternator by an instruction in an aftermarket repair
> manual. The instructions says to turn on headlights, defoggers, fan, radios,
> cigarrete lighter, etc and measure the voltages. It reads 13.6V at 2000 rpm
> or 11.2V at 750 rpm. It's within normal range according to the book. But the
> headlight seems a bit weak unless rpm is above 1300 rpm or sometimes it just
> too weak for the starter. We hardly drive in the highway. It has an alarm
> system. Is the alternator fine?
> TIA
> Tibur
why not go to auto zone and get a free battery, alternator test and be
sure.. it sounds like the battery is low/bad..... but check it out..