VOLATE ISSUES! bad alternator maybe??
#1
SFL Drifter
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VOLATE ISSUES! bad alternator maybe??
my voltage while the car is on is just above 12 sometimes even below. its been like this for who knows how long but i've noticed it recently. some times at start up it is at 13.5 but i notice while i'm driving after a while the voltage drops to anywhere between 12.5 or below 12. i switched batteries cause my other one died. could it be that my alternator is going. the car seems to charge sometimes. any clues
#3
Senior Member
I get the same thing
Start out at 14.0 volts then after it warms up it goes to 13.5 Volts.
I think electrical componets have more resistance when hot.
It would be nice to have an alternator that kept voltage steady.
Start out at 14.0 volts then after it warms up it goes to 13.5 Volts.
I think electrical componets have more resistance when hot.
It would be nice to have an alternator that kept voltage steady.
#4
HAILERS
Join Date: May 2001
Location: FORT WORTH, TEXAS,USA
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Yeah, in the manual it shows a graph and how the engine bay temp will make the voltage show lower when Hot vs when it was stone cold. The alternator is what I'm talking about.
This is not the thread owners problem though. Take 88's advice and have a shop look at the alternator. Could be bad alternator brushes/regulator. OR how about a slipping belt? Or loose connection on the large output wire of the alternator? Or????
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