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here is the deal I have a 96 f350 7.3l psd i've had it about a year and a half. when i bought it the 5v reference wire was grounded in the cab that powers the baro sensor and throttle pedal sensor. i repaired the wire rebuilt the engine harness replaced the idm and ecm glow plugs batteries cps lpop etc. the truck has run great since. about six months ago on hot days the truck would idle a little rough for a few seconds after it got to operating temp and the oil pressure gage
would shutter but then it would stop. now it will shutter any time it is idling hot and the pressure gage will either flutter or drop completely. once the rpm hit 750 plus it runs fine has power. yesterday i replaced the ipr o-rings and cleaned the screen on the filter housing no change. im thinking injector o-rings but im at a loss. any help is appreciated
 
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