Alright i havea 2001 civic ex and ive got a weird voltage problem. The voltage starts at 14.4 volts and after 10 minutes or so of driving it drops to 12.5 volts. Now if i turn any accessory on, headlights, ac, defrost, anything it goes back to 14.4. If i let off the throttle the voltage goes back up to 14.4, also happens if i idol long enough. The voltage also goes back up if im going over 65 mph. Any idea why this is happening? Ive been told it could be the voltage regulator in the alt but im not sure. Thanks for any help.