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Intermittent Injector Balancer/Contribution Fault
Having what seems like I have ready every thread twice (Most end without a post as to what fixed the issue) I figured let me make my own.
My previous ride is a 2005 Lariat 6.0 fully Bulletproofed with 260k miles that I have had for the past 12 years but it has gotten rusty. So I bought a 2005 King Ranch 6.0 with 113k from Florida back in April. It is 100% stock (Ford air filter, OE exhaust, no tune) Put 1,000ish miles on it since then and it has run flawless. Awesome running truck! Its always had a P0404 & P0405 .... I swapped the EGR from old truck that was deleted and fixed those codes
Couple weeks ago on a trip to the store it began to run a a bit rough. Pulled up the Codes on my Edge CTS and It was a P0263 Cylinder #1 Code. Figured possibly a sticky injector so I changed the oil (15W40 Valvoline Premium Blue & Ford Filter), added ArchOil and changed the fuel filters with Ford Filters cleared the code. Ran better for 2-3 days and then it got worse so I parked it and changed the #1 injector with a Reman Injector from Ford Torqued to 28ft/lbs, when I was in there did the Updated standpipe and dummy plug on the passenger side (standpipe was actaully cracked). Finished it on Monday, started it ran it 75 miles no code, smooth running. Perfect! Job done.....Not
Yesterday pulled my camper home and it ran fine, unhooked it and went to a friends house a couple miles away. A mile up the road i felt a skip, down on power and it shifting funny (hard/late?). Got in his driveway, code P0263 again. It sat in his driveway until I went home roughly 4 hours. Started it up skip gone, cleared code and drove home. Drove to work this morning ran mint, no codes. Went to go to lunch felt the skipping, low power, shifting funny....feels like your dragging an anchor code P0263.
So I pop the hood, I check to be sure that the harness were all securely plugged in, took a quick look at the looms to see any obvious rubbing, removed the secondary fuel filter did the bubble test by jumping the starter wire. Not a single bubble. Engine cranks smooth and identical. Put the filter back in, fired it up and running smooth. Clear code and take it for a spin, runs perfect. Left it idle in parking lot (maybe 2-3 mins) to go inside and grab something, come back out an I can hear it running rough. Pull up the Codes and Get a P0281 Injector #7 Contribution ( this is the first time I have gotten a contribtuion code from a cylinder other than #1)
Can a Fuel Pressure Issue cause Contribution/Balance codes (I have blue spring kit just havent had time to swap it)? Possibly FICM issue ( even though it appears good voltage wise) ...... ? The EGR up-pipe is leaking (ticking) from the flex joint but I don't see that causing this issue
FICM 48.5V KOEO Battery Volts 12.1
FICM while cranking 48.5-48.0 Battery Voltage 11.8
FICM while Running cold @ start up 49.0 Battery Voltage 13.8-14.1
FICM Hot 49.0 Battery Voltage 13.8-14.1
IPC @ Idle 600ish..... running good or rough the PSI goes up when the pedal is pushed( when it runs good I see 3500psi at full pedal)
IPR @ idle 22% when the pedal is it will go up depending on how hard its pushed. Max Ive seen is 77% or so
It puts out no smoke when it runs rough, does drip a drop of oil or coolant. The Deltas are within 5-8 of eachother all the time.
Any ideas of what else to check
So needless to say I am back in my old truck until I get this figured out.
Last edited by nawtbird1; 06-20-2019 at 12:59 PM.