What could make my battery light come on only at 40 mph and below?
When my speed drops below 40 mph
my battery light comes on and stays
on when at a stop, until I start
accelerating again. Also when the
light does come on (below 40 mph) I
can make it turn off by turning
something on like my heater, head
lights, etc. Pretty much anything that
draws power. I tested voltage at my
battery with engine off- 12.9 volts.
With engine on- 14.2 volts. But when
the battery light is on I see below 13
volts as if the alternator wasnt
working. My alternator is brand new
not remanufactured and I installed it
yesterday. Battery is 5 months old
optima yellow top. Please help me
out. Any suggestions are greatly
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