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Friend of mine has a 2005 F250 4x4 6.0 . 220.000mls
couple month back the truck all the sudden started running rough. next day running fine, then running rough. A&E Software check came up with several injectors misfiring and Ficm issue.
We replaced the Ficm and truck ran fine for about 1 month.
No while driving it happened several times that the truck shut off. no reason found, no issues. first couple times it cranked right up after a little time, last time they towed it home. Cranked up the next day fine.
A&E shows no codes, HPOP has about 800psi pressure while starting.
Any suggestions of what to look for? KOEO and KOER test reveled no problems either.