I just registered here. I have been lurking around this site, as well as others, some of which I am also a member and have asked about this issue.
Anyways, I have a 2000 F250, 6sp, 7.3L. I towed a trailer about 350 miles with no issues, stopped, came back 20 min later (engine still warmed up) and truck started, but ran very badly, stalled, now it will not start. It is not the batteries. I replaced the CPS (autozone special -- only parts store close to where I broke down) towed vehicle to my garage and have discovered:
ICP sensor indicates up to 3.5V while cranking, no oil inside sensor.
GPR relay gets very hot (one ordered from International, not here yet) I dont really think this is my real problem because the issue started while the engine was at full operating temp.
Cannot find any shorted, chaffed, broken wires, no blown fuses, no codes.
Fuel Bowl fills easily with fuel, new fuel filter prior to the 350 mile pull, I do not have the pressure gauge adapter (next in line after truck is running) but I have connected my pressure gauge directly to the fuel pump and it shows over 100 psi. Of course this does not account for any possible leaks/losses further down the line (toward the engine)
Pulled both valve covers, driver side harness partially disconnected, reconnected, performed the .25 cent trick. Assumed the harness had possibly fried the IDM. Pulled IDM, tested harness, all injector harness connections are around 3.2 ohms.
Talked my buddy at local parts store into letting me try a replacement IDM (cardone part) to rule out this issue. Still did not start.
Although ICP sensor indicated no issue and is not full of oil, I disconnected it and truck will not start.
I am now thinking it could be the IPR valve, but at this rate, I am starting to feel like I am becoming a parts changer, rather than a technician. Any ideas?
Anyways, I have a 2000 F250, 6sp, 7.3L. I towed a trailer about 350 miles with no issues, stopped, came back 20 min later (engine still warmed up) and truck started, but ran very badly, stalled, now it will not start. It is not the batteries. I replaced the CPS (autozone special -- only parts store close to where I broke down) towed vehicle to my garage and have discovered:
ICP sensor indicates up to 3.5V while cranking, no oil inside sensor.
GPR relay gets very hot (one ordered from International, not here yet) I dont really think this is my real problem because the issue started while the engine was at full operating temp.
Cannot find any shorted, chaffed, broken wires, no blown fuses, no codes.
Fuel Bowl fills easily with fuel, new fuel filter prior to the 350 mile pull, I do not have the pressure gauge adapter (next in line after truck is running) but I have connected my pressure gauge directly to the fuel pump and it shows over 100 psi. Of course this does not account for any possible leaks/losses further down the line (toward the engine)
Pulled both valve covers, driver side harness partially disconnected, reconnected, performed the .25 cent trick. Assumed the harness had possibly fried the IDM. Pulled IDM, tested harness, all injector harness connections are around 3.2 ohms.
Talked my buddy at local parts store into letting me try a replacement IDM (cardone part) to rule out this issue. Still did not start.
Although ICP sensor indicated no issue and is not full of oil, I disconnected it and truck will not start.
I am now thinking it could be the IPR valve, but at this rate, I am starting to feel like I am becoming a parts changer, rather than a technician. Any ideas?