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what would you like to know?
did it start after you replaced the fuse?
Check the wires to the IPR, I have seen them break inside the covering, if they are good, then it could be a bad IPR or a bad high pressure pump. also check the pump reservoir, the oil should be about 1 to 1/2" below the cover.
check the IPR connector for 12 volts at THE RED WIRE WITH THE KEY ON.
Have you checked the fuses under the hood, these trucks had a problem with the fuel heater shorting out in the filter housing and blowing a 30amp fuse. I am not sure of the fuse number.
will your scan tool read sensor values? Namely the ICP, it needs to be over 500 psi to fire the injectors.
Okay, you either have a bad high pressure pump or an internal leak in the engine. the reason you are seeing 2200 psi with the sensor unplugged is since the PCM isn't seeing a signal from the ICP sensor, it is using a default value programmed into it, this value is not a true reading, only what the PCM thinks it should be seeing.
The next step is to block off the oil rails with the special tools and essentially dead head the pump to test it.
that will prove out the pump, but there could still be a leak at one of the injectors. I have to leave for a couple of hours, going to repair a convertible top on a 1962 Lincoln. I should be back in about 3hrs, let me know how you make out.
Then you must have a leak inside, possibly one of the injector orings
Do you know some one who runs a repair shop that would have the block off tools to test the pump?