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Power Strokes
7.3 Tech
P1280 icp code
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[QUOTE="Maryland dieselnick, post: 1561441, member: 22661"] Your duty cycle is x2 what it should be. The PCM is commanding the pump to compensate for a hydraulic shortcoming. You can deadhead the pump to isolate the pump from injector Orings. You can try a known good IPR. You can verify a properly torqued pump drive gear if anybody has monkied with that. In the past year, I’ve come across two trucks where the oil pain had been replaced. The person who replaced the pan used a bit too much RTV. Excess bead dropped into oil, seam around from awhile and eventually got sucked into the pickup screen cage. It looked like a coiled up grey snake in there. Low pressure reading was ok on testing but pressure won’t equate to flow. [/QUOTE]
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