7.3l wont rev
 

Hi everyone; I need help. My 2001 f-350 7.3l starts and runs fine. I'll drive down the street fine, sometimes 30 minutes. All of the sudden the rpms will drop to 1500rpm check engine light comes on, it may spit and sputter and pushing the pedal wide open wont change anything.
It will idle for hours with no problems.
If I turn it off and restart it I can drive for a few miles and then problems start again

I've replaced pedal assembly (old problem leaving me kicking pedal at green light)
warrantied out my ICP

has oil and fuel and I replaced fuel filter about 1000 miles ago...
(codes I have were all over the board I got injector pressure low/high, turbo pressure low gear ratio 3rd wrong)


give ideas