contribution balance issues need optimistic advice
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Junior User
Joined: May 2014
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contribution balance issues need optimistic advice
So i bought a 2011 with 250k on the clock. The EGR has been deleted but not the DPF does not have a tuner on it but has to have a tune for the egr delete. Drove alright the first day without issues the next day not so much. CEL, traction control, and ABS lights are on. Check the trouble codes and get P0281 (#7 cylinder contribution/balance) P0278 (#6 cylinder contribution/balance) P0306 (#6 cylinder misfire detected) and P0266 (#2 cylinder contribution/balance). Right now getting this motor running correctly is my priority not so much the ABS/traction control. I'm hoping a new fuel filter would help and some sort of injector cleaner additive. Possibly something that could clean up the valves too if there is such a thing. In my experience with my fathers 6.4 which will throw a cylinder 5 contribution balance code clearing the code solves the problem but doesn't in my truck. Thinking of replacing injectors is giving me some serious anxiety right now so any advice is appreciated.
Laughing Gas
Joined: Dec 2016
Posts: 768
Likes: 184
From: Knightstown Indiana
I’m with senix. I’ve never seen a delete tune that was not all or nothing. I’m not saying it’s not possible, but getting back to a stock tune and ensuring all the modules are communicating would be my first step.
Lead Driver
Joined: Jan 2010
Posts: 6,600
Likes: 83
Have you ruled out the DPF being plugged? What is the distance since last active regeneration? My initial thoughts here are the DPF was reinstalled for the sale but it has a no emissions calibration installed to the PCM so that DPF is eventually going to cause issues.
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Junior User
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I wish I could just pop an egr back on and return to stock but I don't have one laying around since I didn't do the delete. After work today I might try unbolting the dpf and seeing if I can swing it out of the way to see if the truck runs without it hooked up. I haven't checked to see if it has any of the sensor plugs hooked up on it. I've been doing extensive research on cp4 failure/wear and how to diagnose those and it doesn't seem that I am getting the codes most people get when they go out. I live in VA and the dealer is in New York right now it's tough to find the time to get back up there and it would be a long haul for something to go bad. If the PO was unaware of the issues with the vehicle and not inclined to do maintenance then the water separator might be full but I'm pretty sure I'd have something on the dash telling me to drain it. Going to pick up a fuel filter for it today as well to see if that remedies any of my issues. All I can donate the moment though is pray that the cp4 and injectors aren't shot. I had planned on doing a full delete asap
Posting Guru
Joined: Aug 2007
Posts: 1,902
Likes: 26
From: BA, OK
Checking for unplugged sensors and disconnect the DPF to see how it runs would be a good start IMO especially since it ran fine on day one and then CEL the next.
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Junior User
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Please correct me if I'm wrong but wouldn't i be having a ton of super noticable issues if the cp4 is toast
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Junior User
Joined: May 2014
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Pulled the dpf loose and to the side and ran it like that it seemed to run better still idling a little weird. I need to pick up an obd2 scanner to run the codes again. It was shifting really late and only running well if I controlled it myself in manual mode. I'm assuming that had to do with the traction control being fudged up. Unless y'all can come up with a super helpful solution I have a bad feeling I'm going to have to crack into the valve covers and replace the injectors. Not sure if I should spend the money on that first or spend it on a tuner and hope that fixes it.
Lead Driver
Joined: Jan 2010
Posts: 6,600
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Ideally, you need to know what calibration is installed (which you can only know by doing it yourself) but finding a no emissions tune at this point is going to be difficult. I'm with senix, if a Ford dealer sold this truck... they sold a no emissions truck that isn't functional. How many miles did you make it since purchase?
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Junior User
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Drove it about 35 miles so far today. It's now running well in drive and shifting well except for in 1st from idle. After getting off the interstate and sitting at a light had some greyish white smoke doesn't smell like antifreeze or water burning. Have a scanner that will be able to read the injector balance delivered today. Hopefully that will be able to give me some useful information. Still need to get to the bottom of my abs issue
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Junior User
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I want to try resetting the computer to see what happens. I know with older models you could disconnect the negative leads on the batteries to reset. What is the procedure on these things and will it erase the delete tunes?