Balance faults

[d7es3l]

Just performed a CCT on my 1995 250, I got a P0266 & P0272 which I read is cylinders 2 & 4 balance fault. What is the cause of this? What is the remedy? I have 188,000miles, i also have stage 1 injectors. Thank you.

 

[d7es3l]

Also, it starts up fine. I performed the test with an aeroforce. The truck runs great, absolutely no problems. Sometimes it will get a wandering idle but then goes away. The wandering idle is barely noticeable, it goes from 650-800 back and forth. I can hear the difference just barely.

 

[Justin@DP-Tuner]

Did you perform the test when the truck was all the way up to operating temp?

 

[d7es3l]

Did you perform the test when the truck was all the way up to operating temp?

Yes, it was up to operating temp but I had turned it off for about 5min to go in the house & I came back out turned it on & tested it. So maybe the hpop/lpop wasn't up to pressure yet i don't know. I will try it again & see what happens!

 

[Justin@DP-Tuner]

Yes, it was up to operating temp but I had turned it off for about 5min to go in the house & I came back out turned it on & tested it. So maybe the hpop/lpop wasn't up to pressure yet i don't know. I will try it again & see what happens!

The HPO and LPO are up to pressure as soon as or even before the truck starts. 5 minutes will not cool the engine down enough to matter.

Try testing again and seeing if those same two codes throw. If not, it may be a CPS issue(even though that usually only effects cyl #3 and #8)?

 

[d7es3l]

Tested again, same codes. Any idea what problem could be?

 

[backwoodsboy]

Swap #2 and #4 injectors into different holes.
If the problem follows the injectors you have an injector issue. If it stays with the cylinder then you have a compression issue.

Or you could just have a grey CPS in the truck....oke:

 

[d7es3l]

Swap #2 and #4 injectors into different holes.
If the problem follows the injectors you have an injector issue. If it stays with the cylinder then you have a compression issue.

Or you could just have a grey CPS in the truck....oke:

Haha I definitely have a grey CPS in there... Could that just be the issue?? The injectors have less than 5,000 on them. It's not knocking either or anything.

 

[backwoodsboy]

My truck would throw cylinder contribution faults with the Ford grey cps. Ran fine but I always had a couple cylinders fail.
Throw one of these in and see what happens:
http://www.oreillyauto.com/site/c/d...r_1127090_-1&keyword=camshaft+position+sensor