Power loss on highway...HELP!!!

I thought my O2 sensor too but my fuel trims are reading fine. Both fluctuating within spec

 

Just FYI ... May or may not be useful
https://repairpal.com/OBD-II-Code-P0171-and-P0174

 

Well I cleaned my MAF for a second time and it did the trick. Thanks for all the help guys.

 

Well it was the fuel pump. I ordered one this morning and then on my way back from hunting it decided to be done.

Hate seeing my toy on a trailer

 

Consider the 2 pending codes - LEAN condition. That will certainly cause a drop in power:

https://repairpal.com/OBD-II-Code-P0171-and-P0174

 

Even worse it was towed by a Ford

 

Yeah pops owns a Ford. I mean it's a nice truck but my Toy is just as capable as it.

 

Yeah the codes were for lean, but they both didn't come up together most the time. It's usually just was the p0171 after changing the MAF. It was still drive able but didn't like to go too far before the pressure wasn't enough. Can't wait until Wednesday to get out of the Ford.