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Message: [QUOTE="Black 02, post: 1333923, member: 6916"] I forgot to mention the engine has about 40-50 PSI oil pressure when warm at about 2000 RPM. I have a Melling LPOP. Here is a graph of ICP and Duty Cycle while the truck was sitting in park and it threw the P1211 code. When the ICP went to zero, I let off the throttle and the truck died. I revved the truck up to almost 3000 RPM when the ICP spiked up and held it steady. [ATTACH=full]160891[/ATTACH] Here is a graph of the Duty Cycle and RPM over the same time. The duty cycle climbs and then drops to 4.69% while holding that high RPM (over 2500). When I let off, the truck died and the duty cycle went up to 14% give or take. These two graphs are over the same timeline. [ATTACH=full]160892[/ATTACH] I'm pretty good with excel, but I'm not sure how to graph 3 parameters over time and give a vertical scale with each, so that's why I graphed the data on two different charts. I noticed the ICP dropped to 0 on the graph. I'm guessing that's why the P1211 code threw. I'm confused as to why the Duty Cycle dropped to 4.69%. Very odd...... Could a bad cam sensor cause the issue of giving poor data at a higher RPM??? [/QUOTE]

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