G'day from downunder, i have 2004 f250 with 7.3 with ruff running . i have changed the icp and the cam angle sensor. i keep getting codes as follows p0263/p0266/p0269/p0275/p0284 this when i do cct test the most codes that keep comming back are p0263 /p0269 . any help would be great thank .dieseldaves.

 

P0263 Cylinder 1 Contribution/Balance Fault
P0266 Cylinder 2 Contribution/Balance Fault
P0269 Cylinder 3 Contribution/Balance Fault
P0275 Cylinder 5 Contribution/Balance Fault
P0284 Cylinder 8 Contribution/Balance Fault

those are the codes. from there idk what they mean. id think it if it was bad injectors on all 5 that the truck wouldnt run. but i really dont know what all this stuff means. hope that little bit helps. even though i know it didnt

 

Check your wire harness on the passanger side, the UVC harness is unplugged or shorted out.

Not sure where you can get parts over there, may have to go directly to Ford...

But thats what it is...

Basicly you have the entire passanger side not firing.

The #2 is more then likely just the computer being really confused. Fix the other side and check again.

 

thanks for the replys will check the harness and will let you all know how i got on with it thanks again . dieseldaves

 

idk if the 7.3 has a ficm or not but i know on the 6.0 with that many injector codes, pretty good chance that what it would be.

 

Nope, the 7.3 has a IDM, but with all his codes being on one side (short of #2) its 95% the wire harness.

 

hi, checked harness looks ok. did a buzz test all ok . looks like injectors ?

 

Both under the valve cover harness and the under valve cover gasket?

And it passed a buzz test?

hummmm

How many miles on the truck? Did this start all at once?

 

hi, yes both uvc harness ok, ran engine with covers off and check oil flow out of inject all ok. yes it did! its got 151000kilometers ?

 

I'm stumpped... Checked the fuel pressure? Could be a bad fuel pump...