Finally I had a fuel pressure sensor fail on my ISSPro EV2. On my trip to  observe my fuel pressure got irratic and then started to climb. I got off the I84 and pulled in a truck stop. Shut down. Key back on and the needle swept to zero then back to 25 PSI. Airdog was not running should be zero pressure. Pulled the sensor lead and turned the key on again then the gauge swept to zero and then back to straight down this is a sign of missing sensor. Ok. So I know I've got a bad sensor. On my way over to Parma ID I called @dieselautopower and ordered me a new fuel pressure sensor.  I'll post more on the diagnostics when I get home.

My new sender came yesterday. Now all I got to do is install the fuel pressure sender and see what happens... Stay tuned I'll report back soon.