1995 Monte Z34, 3.4DOHC
My car has developed voltage issues. Some sytems are running on less than
battery voltage while others are running at 13.6 volts as expected. I
haven't done any diagnosis yet other than figuring out that my alternator is
putting out proper voltage and that only some sytems are effected. I checked
the voltages at the I/P fuse block, some systems running at 13.6VDC while
others are running at 12.2VDC (at time of testing, sometimes this voltage
drops to less than 10VDC).
When engine is cold, everything operates normally. After a 5 - 10 minutes of
running the voltage drops.
Just looking for opinions on where to start. Maybe someone experienced a
similar problem. Maybe listing what systems are effected and checking to see
if they have a common ground or voltage source that is causing an issue?