P0266 Cylinder 2 Contribution/Balance
Hotshot
Joined: Dec 2003
Posts: 15,368
Likes: 121
From: Stuttgart, Ar
#2 cylinder isn't keeping up with the rest as detected by the PCM for a specified time period. It could mean a loss of compression but NORMALLY you can expect a bad injector. How's your truck running?
Posting Guru
Joined: Nov 2010
Posts: 1,347
Likes: 0
From: Eagle Mountian, Utah
Could also be a ficm that is weak. One of trucks in our fleet throws cont/balance codes on random cylinders until it warms up. Its ficm is bad, going to try the resoldiering trick on Monday for it.
Thread Starter
|
Senior User
Joined: May 2009
Posts: 357
Likes: 0
FICM is 8 mos old. new fuel filters will go on tuesday. I tried a can of sea foam as I supected injectors 134k on the clock run between 6 and 13 deg eoc ect all originial under the hood, but for Batts and FICM. Running a mild "no stud tune"
Trending Topics
Freshman User
Joined: Oct 2015
Posts: 47
Likes: 0
Hey guys, 2006 F250 6.0 I am having a P2066 code that just showed up this morning and it seemed to have a little bit of smoke. Every day where it is under 60* outside, the truck will have a slight misfire and had no smoke so I changed my oil to 5W-40 T6 with 8 oz of Rev-X oil additive and I had FoMoCo 15W-40 in it and that seemed to help for a day or two. I just installed all 8 injectors (190/100 from warren) about a month ago so it seems like I wouldn't have a bad injector...does anyone know what it could be?
FTE Stories
Ford Trucks for Ford Truck Enthusiasts
10 Best Ford Truck Engines We Miss the Most!
Joe Kucinski
2026 Shelby F-150 Off-Road: Better Than a Raptor R?
Brett Foote
2027 Super Duty Carhartt Package First Look: 12 Things You NEED to Know!
Michael S. Palmer
10 Most Surprising 2026 Ford Truck Features!
Joe Kucinski
Top 10 Ford Trucks Coming to Mecum Indy 2026
Brett Foote
5 Best / 5 Worst Ford Truck Wheels of All Time
Joe Kucinski
Ford Super Duty: 5 Things Owners LOVE, 5 Things They LOATHE!
Joe Kucinski
Every 2026 Ford Truck Engine RANKED from WORST to FIRST!
Michael S. Palmer
The Best F-150 Deal of Every Trim Level (XL through Raptor)
Joe Kucinski
Hotshot
Joined: Dec 2003
Posts: 15,368
Likes: 121
From: Stuttgart, Ar
Hey guys, 2006 F250 6.0 I am having a P2066 code that just showed up this morning and it seemed to have a little bit of smoke. Every day where it is under 60* outside, the truck will have a slight misfire and had no smoke so I changed my oil to 5W-40 T6 with 8 oz of Rev-X oil additive and I had FoMoCo 15W-40 in it and that seemed to help for a day or two. I just installed all 8 injectors (190/100 from warren) about a month ago so it seems like I wouldn't have a bad injector...does anyone know what it could be?
Freshman User
Joined: Jan 2010
Posts: 26
Likes: 0
same happened to me but it was cycl 7. took it to the shop said it was a valve seat. so arp studs headwork and gaskets and new oil cooler just for safe measure. total of $3500. but at least shes bullet proofed now.
Freshman User
Joined: Oct 2015
Posts: 47
Likes: 0
I just had cylinder 1 have some problems and it turned out to be a bad intake pushrod for the cylinder but I never threw a code for that cylinder... that's what is confusing me about this problem. All 8 injectors were from reman's that Warren had received from past cores.
New User
Joined: Jan 2019
Posts: 1
Likes: 0
2013 f350
would this code come up if the fuel was felled up? I had a low fuel pressure in the fuel rail code come up as well both when it was cold as hell
1st Gear
Joined: Jul 2022
Posts: 1
Likes: 0
From: Muscatine, Iowa
does the code come off once it’s warmed up tho or does cylinder 2 stay on still after deleting it?
[QUOTE=Unrealo4;10060958]Could also be a ficm that is weak. One of trucks in our fleet throws cont/balance codes on random cylinders until it warms up. Its ficm is bad, going to try the resoldiering trick on Monday for it.[/QUOTE]
does the code come off once it’s warmed up tho or does cylinder 2 stay on after deleting it? My truck has cylinder 1&2 on when first driving and just today 2 won’t clear, runs good on highway and in town when up to temp but once it’s stopped or parked you can tell it’s a little choppy.
does the code come off once it’s warmed up tho or does cylinder 2 stay on after deleting it? My truck has cylinder 1&2 on when first driving and just today 2 won’t clear, runs good on highway and in town when up to temp but once it’s stopped or parked you can tell it’s a little choppy.
Thread
Thread Starter
Forum
Replies
Last Post
2003, 60, 73, balance, contribution, contributionbalance, cylinder, diesel, duty, f250, fault, ford, p0266, powerstroke, super
