Petro
Well-known member
Ok Guys, My boss owns a Early 99 Regular Cab 7.3L Automatic with around 240k on the clock. He was driving it monday night and All of a sudden it lost power, began running rough and died. When he attempted to restart it, It would fire consistently but never pop off. Yesterday I threw in a new cam sensor and still the same thing. I then threw a computer on it and did a buzz test and it passed with flying colors. While randomly cranking it yesterday I got it to start for about 5 minutes. With it floored it wouldnt go over 2000 rpm and was running very rough and smoking like crazy. When I let it return to an idle it died and again does the same thing, just turns over and fires consistently but will NOT restart. Duty cycle while cranking is 40 to 60 percent, which I thought was way high for cranking numbers. ICP while cranking builds up to 1600 and would continue to go up if we continue to crank. I Replaced the ICP sensor with a know good one, Replaced the IPR with a known good one, Replaced the hpop with a spare we had. Swapped the IDM with a known good one. It has Great Fuel Pressure, Cranks Fast as hell. Codes are very inconsistent. Codes We had, that come and go are P1212 and P1280. Still All it does is crank and Fire. With Starting fluid it hits right away and runs great, No hesitation at all but dies immediately when you let off on the stating fluid. Cant Seem to figure it out. Every Test Seems to pass. Any Help would be very Appreciated. Thanks in advance and sorry for the long post.
