HELP PLEASE
Fleet Owner
Joined: Apr 2012
Posts: 27,307
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From: Spanaway
The Harpoon mod is when you go into the tank and shorten the vent line. When long some people have had problems with getting the tank full do to
fuel coming up the vent and kicking the nozzle shutoff early. When you trim the vent line you don't have fuel coming us as soon and if your also dealing
with any foaming it will be less likely to also kick the nozzle off. The last added thing is does is let you squeeze a few more drops of fuel into the tank.
Mark is better with the numbers than I am.
fuel coming up the vent and kicking the nozzle shutoff early. When you trim the vent line you don't have fuel coming us as soon and if your also dealing
with any foaming it will be less likely to also kick the nozzle off. The last added thing is does is let you squeeze a few more drops of fuel into the tank.
Mark is better with the numbers than I am.
Fleet Owner
Joined: Nov 2003
Posts: 27,881
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500 or better is good for the FPW. That along w/ the injector buzzing and sync tells me that your FICM is most likely working fine. You might verify that w/ Ed at FICMrepair.com. This is why I have a spare (known good) FICM. Really helps eliminate the FICM from the lists of suspects.
When I said I suspected the fueling system, I include the high pressure oil system (and HPOP) as part of the fueling system. Injectors and FICM too.
It is always good to have a fuel pressure reading, but filling the fuel filter bowl quickly and no bubbles is about the best you can do without it. Clogged lines or pickup screen would show up on the fuel pressure, but filling the fuel bowl quickly is a pretty good test also.
Last thing I would suggest is get the right ICP sensor in there and see if you get any ICP volts, but it is now sort of pointing to a leak in the HPO system or the HPOP. You might start planning an air test. That's the way it appears to me anyway!
When I said I suspected the fueling system, I include the high pressure oil system (and HPOP) as part of the fueling system. Injectors and FICM too.
It is always good to have a fuel pressure reading, but filling the fuel filter bowl quickly and no bubbles is about the best you can do without it. Clogged lines or pickup screen would show up on the fuel pressure, but filling the fuel bowl quickly is a pretty good test also.
Last thing I would suggest is get the right ICP sensor in there and see if you get any ICP volts, but it is now sort of pointing to a leak in the HPO system or the HPOP. You might start planning an air test. That's the way it appears to me anyway!
Fleet Owner
Joined: Apr 2012
Posts: 27,307
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From: Spanaway
Does he have the older or newer system with the ICP on the valve cover?
Mark over at >>> https://www.hhcdiesel.com
has that tool for testing at the IPR.
Mark over at >>> https://www.hhcdiesel.com
has that tool for testing at the IPR.
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Junior User
Joined: Feb 2015
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From: Texas
Thanks for Harpoon explain, my ICP is on the valve cover so not in no hands land. I'm really thinking but was hoping not maybe the SCT fitting gave? But then why would I have an IPR within normal limits? Then I was thinking fuel sytem something because of the way at 70mph it was like turning the key off. I'm also noticing now I'm throwing P02285 which is ICP related, and U0155 communication with instrument panel???But all gauges are working, and accurately so I'm guessing U0155 is because batteries were connected and truck was cycled several time to prime pumps and filters. I've heard of same codes and stories of trucks shutting down and the guy had to switch out his instrument cluster and such. You guys have been a wealth of info and I'm still working down the check list, any guidance on making a pressure gauge that I can test ICP pressure? I'm also told the same gauge will work for the fuel pressure check below the bowl/resv..? Any truth to that? Anything you guys can think of or need from me let me know, Ihow do I get ready for air check as far as fittings for testing?
Fleet Owner
Joined: Nov 2003
Posts: 27,881
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You don't have the failure probe STC fitting. It is on the 05 and up only ......... and before anyone disagrees ......... I mean the 05 model year trucks that began production in mid 04. Also, there have been a few retrofits done as well. Not cheap or easy, but they have been done.
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Fleet Owner
Joined: Apr 2012
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From: Spanaway
Thanks for Harpoon explain, my ICP is on the valve cover so not in no hands land. I'm really thinking but was hoping not maybe the SCT fitting gave? But then why would I have an IPR within normal limits? Then I was thinking fuel sytem something because of the way at 70mph it was like turning the key off. I'm also noticing now I'm throwing P02285 which is ICP related, and U0155 communication with instrument panel???But all gauges are working, and accurately so I'm guessing U0155 is because batteries were connected and truck was cycled several time to prime pumps and filters. I've heard of same codes and stories of trucks shutting down and the guy had to switch out his instrument cluster and such. You guys have been a wealth of info and I'm still working down the check list, any guidance on making a pressure gauge that I can test ICP pressure? I'm also told the same gauge will work for the fuel pressure check below the bowl/resv..? Any truth to that? Anything you guys can think of or need from me let me know, Ihow do I get ready for air check as far as fittings for testing?
But if you tied to test HPOP pressure with the rig you used for fuel it would likely explode from the pressure. If
your going to test HPOP with a mechanical guage you need to have a hose made for a pressure range from 0~4000 PSI.
The fuel pressure guage only needs to be rated for about 150 PSI.
I had a hose made for a 6K system pressure and a gauge to go with that. Still I would not hold that in my hand for anything.
Fleet Owner
Joined: Nov 2003
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If your truck was sold as an 04 model year, you will NOT have the STC fitting. Ford had 04 engines left over - they put those in 05 Excursions.
Fleet Owner
Joined: Apr 2012
Posts: 27,307
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From: Spanaway
Ok I am going to upload a few things to start this off.
How are your wiring and electrical skills?
We can walk you through this.
Here is the first batch of PDFs from the 2003~2004 Workshop Manual from Ford.
I am going to pull out the Crank No Start testing from the 2004 PCED OBD 6.0L Diesel SECTION
How are your wiring and electrical skills?
We can walk you through this.
Here is the first batch of PDFs from the 2003~2004 Workshop Manual from Ford.
I am going to pull out the Crank No Start testing from the 2004 PCED OBD 6.0L Diesel SECTION
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