Hi there, here's my situtation, not too long ago i noticed that when i would
start my 1992 isuzu pickup it would stall a second after i started it, then
on the second attempt it would stay lit, but on my dash with all the gauges
most of the lights would be lit-up, my heater and fan would not work as well
and the washer blades were ultra slow, after giving the truck a really good
REV to 3600rpm it would kick out of this mode and run completely normal, as
i loked into this problem i looked under the hood and took a volt meter to
the battery when the truck was turned off....to my surprise it was a normal
12.9V....i checked a few other area for voltage on the engine and same 12.9V
appeared (including the Alt.) my next test was to start the engine and
voltmeter it again, after starting the engine...there was no change in
Voltage...the same 12.9V.....that is until i gave the engine a good REV
again.....then it kicked the Voltage up to 14.3V in its normal state.....i
had the Alternator re-built since i thought maybe it was an issue with the
diode-trio in the rectifier....$150 later i find the Truck is still doing
the same thing.   Has anyone have input on this issue?  i'm getting to the
point of pulling my hair....the funny thing is i have another 1990 isuzu
pickup thats doing the exact same thing but started awhile earlier...maybe i
can kill 2 birds wiht one stone?!

Appreciate your time folks.

Thanks