I am brand new to this forum thing. Well I say that. I've read and reviewed this forum for years but this will be my first post. I'm trying my best not to break any rules but if I manage to do so please tell me and I will correct my mistakes.
Anyways I have a 1996 F250 7.3 Auto that has given me issues. It had a very poor idle that would hunt or search and occasionally bog down and abruptly shut off. The motor has recently been rebuilt due to loss of compression on a cylinder but the same symptoms at idle are showing up again. It is worse when the motor has warmed up but still present slightly when cold.
Now here's the tricky part. This truck has been given the works. Stage 2 Full Force injectors, comp cams valve springs that are shimmed, head studs, EFuel, Terminator T500 HPOP
, KC Turbos TP38R turbo, CXRacing intercooler kit, aftermarket intake and 3" to 4" straight pipe exhaust. The truck has a brand new front cover, waterpump, fan clutch, motorcraft IPR
sensor and pigtails, motorcraft dark blue/purple Cam position sensor and pigtail, Alliant Power Valve cover gaskets, UVCH'S, and Injection pigtails that were soldiered in not butt connected, and a new reman IDM
. Finally it has a PH Hydra chip with Powerhungry custom tunes mounted on a T3 port that was rebuilt by Powerhungry themselves.
After all of that the truck still has issues idling when warm. When it is at operating temp the ICP
pressure is usually around 425-440 PSI
duty cycle around 9-10%.
This truck has me stumped any and all help is appreciated. Thanks again.