loss of power/not stall but close

[madeline]

i have 2008 job 2 6.4. i have had the high pressure fuel pump replaced about 30,000 miles ago. today while driving about 65 mph truck check engine light came on and it lost 90 % power but did not stall. acted like it was not getting fuel. i have a dpf/cat delete pipe, afe stage 2 cai and sct live wire tuner. i drained the water sep. and read the code with tuner. code was u0100. does anyone know what that means? truck has 42500 miles. thanks

[twin_turbo]

I have the exact same problem with my 08 that has 38000 miles. I didn't have my fuel pump replaced but sometimes when I start it it will go into a limp mode where it will just barely run. After I attempt to start it a few times, it will run like normal for around 200-300 miles. I hope someone else has had this problem and knows what is causing this.

[madeline]

i cleared the code with tuner and now truck runs fine. i think the code was for loss of power the ecm. a loose wire maybe?

[frkjr_2580]

Have you checked the fuel pump on the frame rail? I had my wif sesor out cleaning it one day and forgot to plug up the sesor and plug the pump back up. Mine ran like that til it dawned on me what I did. Just an idea????

[madeline]

thanks, i will check it