Ok, I have another issue with me truck. Every now and then while driving around, the engine will start running rough like it isnt firing on all cylinders. There are times it will smooth out within a minute or two, and other times I have to let it sit overnight before for it to run smoothly. This has been going on now for a year, but like I said, it has been intermittent.

In the past when this has happened, I could never pull any codes using sct x3 programmer. Well today the issue came back, so I hooked the programmer up and finally got some codes.

Here is what I got:
1. P0269 - Cylinder 3 Contribution Balance
2. P0403 - Exhaust Gas Recirculation Circuit
3. P0405 - Exhaust Gas Recirculation Sensor A Circuit Low
4. P0611 - Fuel Injector Control Module Performance

Now the run down on my truck. Its 2004, with 142k miles, egr delete and a tune. ICP sensor reads .26v with the key on and .88v at idle. I tested the FICM, and I got 58.5v with key on and 58.8v at idle.

 

Can a mod, please delete this thread. I mistakenly posted this in which I thought was the 6.0 forum. Thanks