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Message: [QUOTE="bismic, post: 1528689, member: 1537"] The IPR duty cycle is ONLY a command from the PCM. It does not reflect a specific valve position. In fact, the IPR is ONLY an open/close valve. The duty cycle dictates the frequency of it closing (it is very fast acting). There is no way to know what the IPR valve is actually doing ..... there is NO position feedback on the actuator or pintle. With no power to the valve, it defaults to an open position on the actuator, but an internal spring will keep the pintle closed, but the spring isn't a tremendously strong spring. As far as the IAT2 reading, I would bet on a wiring issue there. You might want to check the resistance of the sensor wiring. I don't have an early 04 manual in front of me, so I can't help on PCM pin locations - maybe others can. Regarding ICP sensors, I have put an early one on my 06 just to see how it performed. It held up well. Some of the late ICP sensor success is due to the location change, but no doubt it is a better built sensor and will hold up better in the HPOP cover location on the 03 and early 04 MY's. [/QUOTE]

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