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Message: [QUOTE="secondarychaos, post: 1333718, member: 24491"] hmm... alright. So, the computer is seeing a flat ICP, but Duty Cycle is climbing. Duty Cycle reaches either a time or energy saturation, and the ICP spikes. Computer sees high ICP and drops Duty Cycle, ICP follows. Under the assumption that the computer wants more ICP than it's getting during the flat-ICP time, my first question is whether or not the ICP is actually flat during the climbing duty cycle. Have a spare ICP sensor to try? Check the wiring around the ICP sensor? Can you get a gauge on the HPO line? Can you reproduce this code/ICP issue with the truck in park? Is there a miss at other rpms? Oil leak? Extended crank to start? Low oil pressure? Literally anything odd could help us help you. Edit: Check your engine ground to make sure you're not getting screwy signals [/QUOTE]

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