Last September I had the FICM replaced in my truck because of the rough idle, bucking, jerking and what not and ran just fine for a month or so. Last week the rough idle and all that came back and I have no idea why. The only code I have is ICP sensor circuit low but it has been that way even before and after the FICM was replaced and apparently wasn't responsible for the driveability issues like what I described, I will however change it out soon. Back to the FICM, I checked probably every square inch on the injector/FICM harness and connections and those common chafing spots, but found nothing at all. I changed fuel filters a few days ago as well and still acting up. I had batteries replaced in August. Surely the FICM couldn't have gone bad again in that short of time. What do yall think?

2004 Ford F250 XLT, 6.0 PSD, 4x4

 

I am going through the same stuff right now. Currently on my second FICM.

I did my ICP and it was oil soaked. Check the tech folder for some basic FICM knowledge.

I am waiting for my Scan Gauge to arrive so I can get some real data before I post my laundry list of issues to the forum.

Good Luck.

 

Thank you, oh and by the way, when you replaced the ICP did that fix the problem or does it still run rough?

 

I have replaced the ICP and IPR. My truck does not want to start anymore. If I get it started, let it idle, and try to restart......it won't crank back up. So my issues run a little bit deeper than yours. Like I said, check out the tech folder to learn some FICM troubleshoothing.

 

Ok, yeah im going to check out the FICM troubleshooting. Just wondered if the ICP replacement actually improved anything but sounds like it didn't for you. Thanks again

 

HPOP possibly?

 

Eh, could be.. However I did notice my oil cooler is probably in it's early stages of going bad because the coolant is a slight milky brown color. You don't suppose coolant in the oil would cause the injectors the behave like this would you? Because obviously I know injectors use the high pressure oil to fire.

 

if you have oil in your coolant then your oil cooler is probably already blown.

I am not sure if it will cause problems running, but it probably would

 

Yeah I was reading up on that just now. Luckily I hardly drive anywhere outside city limits nor drive it that much at all. Sounds like i'll have to leave it at home and drive something else till I can fix it. What's usually used to fix this? A delete/repair kit maybe, or just a new oil cooler period?

 

Had similar issues early this year. A local shop was quick to replace my FICM as well. When the issues persisted I started messing with it my self. I discovered the problem with mine by wiggling wires and checking connections while the engine was running. Wiggling the ICP connection harness caused the engine to surge and almost die.
I clipped out the metal crimps connecting each of the three wires and remade the connections with solder. (A little heat shrink tubing and silicone to waterproof)
I am still running with the original ICP sensor and pigtail and it is running great.

 

new oil cooler. u might also wan to do the stc fitting once u have it all apart. if ur doing ur oil cooler, it's a safe bet to do ur egr cooler as well.

 

Alright, so I figured I might as well get the EGR delete and fix it while im doing the oil cooler. So I ordered the EGR delete kit yesterday and im gonna get the oil cooler today. I know they don't come cheap but do you know where I could get one at a fairly decent price? Does somebody sell rebuilt ones? Thanks...

 

u could go to savage yards and find rebuilt ones, but in my opinion and in most techs' opinions, it's better for u not to have a rebuilt one and to go for a new one instead. as long as ur up-to-date wif ur coolant flushes, the oil cooler will last u for a long while. i would mention the egr cooler as well but then ur gonna do a egr delete. oh well, basically ur truck's gonna love u for it. most folks tat i know who are not on here, usually leave out coolant flushes on the 6.0s but do everything else. weird.

u might want to google online. u might find some. but stick to oem.