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Message: [QUOTE="cbuttre835, post: 506263, member: 1190"] [b]Update: scan tool data....[/b] OK so I put the scan tool on it. I also checked the IPR sheet metal nut to make sure it's tight, just on a whim. IPR duty cycle ranges from 15-30% at idle. That does not look right. I thought normal would be 9-12% ICP at idle is 1300-1500 PSI. That, too, seems high; I thought 750 PSI? Here is the real kicker: EOT started at 180 degrees and after 2-3 minutes (motor started cold) it was showing 400+ degrees F. When I attempted to run the KOER Cyl. Contribution Test (had a reallly lopey idle at this point) it would throw a P0196 EOT range/performance code. It should run the test because EOT has to be over 175 or so (and it was...) Question: does the chip being in affect this? Did not go through the trouble of pulling it. What little I understand about programming tells me that the high ICP / IPR Duty Cycle could be due to the PCM thinking the oil is way hotter and thinner than it actually is? Or does EOT not play a part in that? Still stumped, but getting there. I hate to spend $300 or so for a new IPR, EOT, and ICP sensor.... I'd like to know which of the 3 it might be. Any other tests I could do? [/QUOTE]

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