Hi, I have a honda crv sport 2002. I`ve put an engine guard in it which tells me engine temp and voltage. When started the voltage is good, 14V, drive for about 10 minutes and it drops to 12.3, 12.2V. I guess its a temperature related regulator problem, but when you coast down a hill, the voltage jumps back up to 14V, as soon as you throttle back on, the voltage drops back to 12.3V, any idea`s.