FWIW, my EBPV stays on for 20 minutes, no matter how warm the engine gets, every time I start it up and it is cold out. It operates properly, mind you, where it shuts off when I hit the throttle, etc, so it does not bother fuel economy. However, because it does stay on so long after complete warm up, I have researched some ways to temporarily disable it from the cab.
As many of you have already read, i set up a system with recitifer diodes on the supply wire fromt eh PCM, so I can manually turn the EBPV on with a switch, so I can use it as an engine retarder. Furthermore, the diodes allowed me to keep it attached to the PCM, so it still functions normally. What I am thinking is this, the grey wire that I tapped is the power wire fromt eh PCM. That means that the black wire must be the ground. Therefore, I intend to interupt this black wire with a switch in the cab, which will, when open, shut off the EBPV and prevent it from operating and annoying me. I am worried that this will set a code. So, the other option is to interupt the gray wire with another switch and a resistor that matches closely the resistance of the EBPV, which would trick the PCM into thinking that the EBPV is still there, and still functioning, when it is really not... I am trying to picture this in my mind, maybe I should draw a schematic. Anyway, point being, will interupting the ground work, or will it set a code? And if so, does anybody know the resistance in ohms that the EBPV creates, so i can get the right resistor and hook this thing up to see if it works?
