SOHC electrical issue..Help
 

Ok, So for the past couple of weeks i have been having a strange problem. IfI am at a dead stop and lay onto the throttle hard the Tach Will Bounce all over the place and I don't even know where to begin to fix. I have had the alternator checked and is supposedly good, but since the voltage regulator is built into the alt. Could the regulator be going out? OH, and it doesn't do it when it's first running, when the engine bay get's to full temp. that's when it does it. And the Voltage gauge will fall below 12 volts sometimes when you come to a stop. Any ideas guys and gals?