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Old 09-17-2011, 03:32 AM
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wait an hour...

Howdy,
I have an ' 02 F350, 7.3, 6spd, 4wd @ 220k. I drive the truck 12 minutes to work a 5am and home at 5pm. The drive home is when the truck dies without any warning and after an hour wait the truck fires right up like nothing happened. I have replaced the CPS and fuel filter. I have not checked for codes.

Thanks a ton
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Old 09-17-2011, 04:29 AM
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So the truck will not fire at all right after it dies?

Sound like possible IPR issues. Leaky maybe.
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Old 09-17-2011, 07:29 AM
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Thanks, I'll check it out.
Sadly, I don't have voltage at the diagnostic port so code checking is out for now.
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Old 09-17-2011, 08:11 AM
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Probably a blown fuse to the OBDII port.
Also, it's an OBDII port, but not an OBDII system. I think it's a CAN system or something like that. Just fyi
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Old 09-17-2011, 09:37 AM
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Thanks, replaced the blown fuse and pulled the codes. ICP voltage error, CPS error, turbo pressure low and I don't know why this on came up (ignition coil G primary/sec circuit error).
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Old 12-03-2011, 09:33 PM
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I am having the same issue with my 2002 7.3. Re-start for mine would be almost exactly an hour later. Got progressively worse until it finally stalled and would not restart at all. I've been chasing this ghost for months now. I ordered an AutoEnginuity scanner with the Ford bundle (includes PSD) and am expecting it to arrive on Tuesday. I suspect it to be the IPR. The IPR has a solenoid that slides onto the valve. I envision the solenoid experiencing an electrical issue when hot. Once cooled it corrects itself. Not uncommon for coils. I'm not a diesel mechanic, but I am an electrical engineer, so I've some experience there. Anyhow, my plan is to check with the scanner, looking for 14% duty cycle for the IPR. My question is if the solenoid is inoperative, as I suspect, what would my duty cycle be (100% or 0%)? I guess either will raise the flag.
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