Hey guys, I just posted this on another forum:
After almost 7 flawless months of running the ISO software on my N55 I experienced the dreaded water pump issue. I was stranded 3 separate times over a few days due to a dead battery. At first I thought it was just a fluke but quickly realized it was the running water pump that was draining the battery.
I exchanged many emails with Terry and Jon regarding the bug. I had a hard time believing it was random as I've run the ISO for so long without issue. The only change to my setup was the addition of my Oil Catch Can a month earlier. Terry got back to me and informed me he was working on the issue and devised the work around for a switched power connection. Terry forwarded me the work around instruction, so off to the garage I headed tools in hand.
Well low and behold, with the hood up, side cutters in hand, the pump starts to run. I was able to turn the pump on and off by unplugging and plugging the blue wired solenoid connection (nothing new). However I was also able to turn the pump on and off by re-connecting the heater wire to the PCV assembly (removed with OCC installation). I was able to do this many times as seen in the video:
http://youtu.be/fxulhhNM3Q4
I've now gone 3 days without the water pump staying on. I mentioned this to a few other members and all seems to be working well for everyone. I have no idea as to how hot the heater element inside the PCV assembly runs so I've zip tied it securely free from contact to another hose. Maybe the common denominator between N55's with the pump issue and N55's without is the fact that the heater wire to the PCV assembly is disconnected.
I hope this works for anyone with the pump issue like it's currently working for me!
**Update** Over a year later, Still running perfect, no drained battery!