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So I have narrowed it down, it only happens when it goes into OD. If I take it out of OD by hitting the little OD button on the side of the gear select, I can drive normally. I just finished a fluid change since I have no idea when the last time the previous owner had it done (I got this jeep...

Something that I've found while trying to diagnose this, If I run the vehicle at 2500rpm for a few min (the time it takes to do it while driving) in park it doesn't happen, it only occurs while physically driving.

I replaced the crank and cam position sensors, that didn't fix it either. Running out of ideas.

Had to chop up the file to be under the 10k character limit, but should have all the parts needed. Each line is 1 second interval...

Got them installed and logged the run, and its still thinking its in a rich condition (lines 183-215) and leaning it out. What else would cause it to think its in a rich condition like this?

Yep, I only get NTK o2's from reputable sources. Im not driving it currently, so it can wait.

Thats my thinking as well for why the PCM is thinking its a rich condition and leaning it out. Im sure the O2's were from when the vehicle came off the line, so its already going to be a good idea to replace them anyway. I just threw in an order for both upper banks, ill post back here whether...

Back again with some logs. I am using Torque pro for logging, so it outputs a CSV which I have attached. You can view the logs in excel (I think) or use: https://limonte.github.io/csv-viewer-online/ At 13:09 is when it started doing its thing; lines 184-217 in the CSV you can see the RPM...

Jeeze "next few days" turned into over a month. Anyway, tested the fuel pressure, priming is 45psi, running is 50 (above 50 when giving it some throttle). Holds pressure for a good 10+ min. Going to dump some injector cleaner into it tomorrow, since it wouldn't hurt in case they are gummed up...

Been busy as hell the last week, will be able to work on it in the next few days here. Yep, ill check when its under load and all also check the live data. 03, also in the title

Tried swapping out the IAC with another one from another Lib, no change (I did clean out the IAC port when I did swap it out the first time). Unplugged the O2's, and it did the usual just faster. Couldn't find my fuel pressure tester, so ill pick up one soon.

Fuel pressure was one of the things I was more leaning towards, as it has all the symptoms of not getting enough juice. Ill check fuel pressure tomorrow once I can find my pressure tester. I hope it isn't the pump as its literally brand new. IAC was aftermarket, but I can pull one from another...

Is it possible that O2 sensors could cause this? I would think it would throw a code (although its probably a good idea to change them out anyway since I dont know when the last time they were changed, if ever). Im going to try and get it to do it in the drive way tomorrow, that will atleast be...

Started having a problem where it would lose RPM (gradually drops down to around 1000) and get shudders even though my foot was on the throttle. If I let go of the throttle for a few seconds and then re-press, it would have some power, or if I press the throttle harder. I replaced a dead fuel...