Hello every one I am new to the forum and I am in need of assistance!
I have a 2003 6.0 that idles rough after warming up. Sometimes idles rough cold also.
Ficm stays between 48-48.5
New icp. And at 23.2 at idle
Ipr around 650 at idle and 3600 WOT
Stand pipe oring look good and have been replaced.
Blue spring upgrade done.
Fresh oil Rotella T6
fresh fuel and oil filters (motorcraft)
Please help I don't know where to go from here short of the dealer for some highway robbery!
No smoke
No codes current or pending (scanguage 2)
No coolant loss
Voltage stays around 13.4 - 13.5

 

These should be switched around (In Red)

So if your IPR% is 23.3% at HOT idle then looks like a HPO Problem that's about what I had when my 03 HPOP went out

Retest thje truck for ICP--ICPV--IPR%
Take values at KOEO for all 3^^

Then Get it up to 185* EOT for Idle & 2500rpm Tests

So we are looking for 3 values for each sensor KOEO--Idle--2500rpm (Are you with me)?????

 

If work has been done lately might want to check and make sure all your plugs are good and tight on the ficm.

 

Sorry I put those two backwards Ipr cold idle 27.8 and icp 815 cold idle (cold being EOT 92°F

 

All work was done after symptoms and also passed bubble test.

 

KOEO IPR 14.9 ICP 6
RUNNING EOT180° idle Ipr 22.3 icp 643
2500 rpm EOT 181 Ipr 40.3 icp 1371

 

was it running good when this was taken^^?? they are Good values so far
If it was running good try to get these values when it acts up sometimes worn orings will move around

Try the same thing except for Baro--MAP--MAFV

Any Idea if Boost is OK

 

The truck was running a little rough when these were taken with a noticeable shimmy. It is more noticeable when driving and the truck goes into overdrive.

 

Boost is building hitting 22-23 if I really get on it. I just cleaned all cac surfaces and resealed with rtv and factory clamps. Sometimes the truck runs rougher than others while doing testing I did have a hard hot start 1 time. The next day it started right up just like any other time hot or cold. Is the baro and mafv something I should be able to do on the scanguage 2?

 

Also the VGT sits around 80? At idle. And when running rough idle rpms will jump around 590-680.

 

Check all these

V-REF
TXD=07E0221155
RXF=046245110655
RXD=3010
MTH=006433330000

Barometric Pressure (PSI)
TXD: 07E0221442
RXF: 046285140642
RXD: 3010
MTH: 001D00500000
NAM: BAR

FICM Logic Power (Volts) (Should be 12 volts)
TXD: 07E02209CF
RXF: 0462450906CF
RXD: 3010
MTH: 006401000000
NAM: FLP

KO=12.0 LI=13.5 HI=13.5 OR=10.5-15.5

FICM Main Power (Volts) (Should be 47-48) Your FMP should never dip below 45. If it does, your FICM is toast and needs repaired or replaced.
TXD: 07E02209D0
RXF: 0462450906D0
RXD: 3010
MTH: 006401000000
NAM: FMP

KO=47 LI=47.5 HI=47.5 OR=40-52 (yes, that is what it says from Ford)

FICM Vehicle Power (Volts) (Should be 12 Volts, should not drop below 10.25 for more than 60 seconds, or 9.0 for 4 seconds. TSB 09-24-03)
TXD: 07E02209CE
RXF: 0462450906CE
RXD: 3010
MTH: 006401000000
NAM: FVP


MAF Voltage (volts)
TXD: 07E0221177
RXF: 046245110677
RXD: 3010
MTH: 000100250000
NAM: MFV


VGT% and almost every sensor would be Tested same as before KOEO--Idle--2500rpm

The CEL almost has to be On for SGII to read the code so you could also stop by a Oreillys or autozone and try a different code reader


Have you cleaned the EGR Valve??

 

SENSOR OPERATING VALUES PDF

https://www.ford-trucks.com/forums/a...1&d=1364848489

 

Flp stays 13-13.2 fmp 47.5-48.5 fvp 13-13.2 map hot idle 14.5~ egr cleaned valve not stuck replaced orings and gasket will check the rest after programming xguage thank you for all your help!!!

 

Do you have something other than the sg2 to check for codes? I would see what is there.

 

Just the scan Guage and an actron auto scanner both so no codes active or pending KOEO v-ref 4.97 bar 14.6 mfv .04 hot idle v-ref 4.97 bar 14.6 mfv 1.34-1.5 high idle v-ref 4.97 bar 14.6 mfv 2.54 the truck wasn't running bad when these were taken will read again when it acts up thank you guys for the help I really appreciate it!