Well got some testing done tonight and it is an ICP issue.
Funny thing is that it is commanding the IPR to drop pressure, then back up again repeatedly.
I graphed (Genesis) the IPR %, ICP, APP, and PW. When the problem occurred the IPR% and ICP would drop simultaneously, spike back up, drop, and so on. When oil temps climb both would increase and decrease smoothly, and the problem slowly faded away.
There was no spike up in ICP to cause the IPR to drop, both would fall at the same time. All the time the APP would hold constant, so rules that out.
Truck ran perfect before and perfect with a Superchip programmer.
Is there a possibility there is an issue with the Definition files?
Any ideas?
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