Still surging after EGR delete turbo and oil cooler, ficm @48

[neffco]

any ideas as to whats next? ijust did the ebp sensor and cleaned tube.and I did rev x,with 5 40 synth. Injectors all tested good as well??? wtf

[dieselburner21]

ICP sensor

[neffco]

how hard to replace? how much does it cost?

[NYC F-350]

If this started happening right after your oil cooler install, it isn't your ICP sensor.
It junk on your IPR valve. If ANYTHING (and by anything I mean even a piece of lint) got in the area under the oil cooler (the HPOP reservoir), that junk got sucked up by the HPOP and was then shot right into the IPR. If your lucky, the IPR survived and just needs to be rescreened. Ford sells a kit for this, it has a few o-rings and a new screen that snaps onto the end of the IPR.
The IPR valve is screwed into the side of the HPOP, which is below and behind the turbo.

If your 04 has the ICP sensor on the passenger side valve cover (big chrome sensor near the alternator bracket, just above the Glowplug Module), try unplugging it. Then see if it surges. If it does not, the ICP sensor may be the issue, but my money is on the IPR.

[neffco]

This was happening before the I had the egr delete, cooler and turbo done 1200 m ago. It seemed to have acted back up. On my 800m drive I didnt notice it and thought it was fixed w new turbo. she sounds sweet though. I can see rpms vary at idle.

[dieselburner21]

Originally Posted by NYC F-350

If this started happening right after your oil cooler install, it isn't your ICP sensor.
It junk on your IPR valve. If ANYTHING (and by anything I mean even a piece of lint) got in the area under the oil cooler (the HPOP reservoir), that junk got sucked up by the HPOP and was then shot right into the IPR. If your lucky, the IPR survived and just needs to be rescreened. Ford sells a kit for this, it has a few o-rings and a new screen that snaps onto the end of the IPR.
The IPR valve is screwed into the side of the HPOP, which is below and behind the turbo.

If your 04 has the ICP sensor on the passenger side valve cover (big chrome sensor near the alternator bracket, just above the Glowplug Module), try unplugging it. Then see if it surges. If it does not, the ICP sensor may be the issue, but my money is on the IPR.

OP said it is "still" surging so it was doing it before all the mods but IPR is very possible

[dieselburner21]

Originally Posted by neffco

This was happening before the I had the egr delete, cooler and turbo done 1200 m ago. It seemed to have acted back up. On my 800m drive I didnt notice it and thought it was fixed w new turbo. she sounds sweet though. I can see rpms vary at idle.

beat me to it, hopefully you have a later 04 built engine if not its going to be fun checking/replacing the sensor (on 03s and early 04s behind turbo). Some times the wiring harness can be worn on the sensor also so usually people replace that too, they are $100 from Tousley Ford if you find that is the problem.

[neffco]

I pulled up my icp on scangauge and dont know what the numbers mean.there in psi.

[WarChild]

Unplug your ICP and see if there is oil in the plug. Mine was doing the same thing until I replaced it. If your is the early 04 like mine, make sure you keep the heat shield covering that is around the sensor......I didn't and will probably have an issue with it one day.

[neffco]

Thanks I'll give that a shot. I noticed my ICP psi fluxuating when I feel the surge. I will know if I'm 04 or 04.5 tomorrow. It hasent been doing it in the a.m. but at the end of the day after sitting it seems to act up. Yes I do look under the hood, but i keep forgetting to check my locations of all my sensors. I think I'm 4.5. I got great mpgs today w/out any wind. 15 anyway witch aint half bad w/a truck load of welding equip. on board up and down hills. I cant wait to just pull my raft to the river and get to use her for a bit of play instead of beating her at work. She's fast! I now believe in the power of the 6.0.