2002 7.3 Powerstroke no start
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2002 7.3 Powerstroke no start
I’ve got a 2002 f350 7.3 PSD, and I’ve come to a point where I’m pretty well stumped. It started when I had to replace the steering gear box on the truck, then I noticed a significant oil leak that was diagnosed as the HPOP. So I removed the pump, did a complete reseal and replaced the IPR valve, and now the truck will not start. I’ve put a code reader on the truck and it reads an IPR duty cycle of 65% and an ICP of 270 psi. Knowing that the truck needs at least 500 psi to fire, I’ve pulled the HPOP off three times and verified that every seal is in place, the check ball on the “non-serviceable” port is in place, and the hp oil lines are installed correctly. The new IPR valve is genuine motorcraft brand. Another symptom that I noticed was that the fuel system was not pressurizing, so I proceeded to check every fuse for continuity, and there were no blown fuses. If I remove fuse number 22 (ECM), then the fuel pump will come on and pressurize the system. I’ve check the ICP sensor and the IPR sensor and both seem to be in working order, so I’m stumped. Does anyone have any ideas?
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From: Northern California
Sounds like you have done a good deal of cranking trying to get ICP pressure, what is your current battery voltage ?
what RPM is it cranking over at ? Burning up a starter and or draining the batteries is not uncommon.
what RPM is it cranking over at ? Burning up a starter and or draining the batteries is not uncommon.
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I’ve had the truck connected to the charger to keep the batteries strong. The engine is turning over at 180 rpms, battery voltage is between 11-12.4 volts. Starter is brand new.
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From: Muskogee, Ok
I didnt see it stated so I'll ask, have you tried starting it with the ICP sensor unplugged? Checked the inertia switch at the passenger kick panel by the door?
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i did try starting it with the ICP sensor unplugged and no dice. I have not checked the inertia switch, is it by the fuel reset? What exactly would I be checking?
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Alright so I checked the inertia switch and it is set correctly, but is there a way I could test if the switch itself is bad? Would the inertia switch make sense as to why when fuse number 22 is removed the fuel pump suddenly has power? Or is it more likely to be a different sensor or connector?
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