@@RuckerStaggers sweet good deal

I have the same problem and have much done what you have done but I am running rich on both banks. I too have leakage around the throttle body area but typically such a leak causes a lean and not rich condition. My muffler may be the problem for a restricted exhaust system means a restricted intake which leads to a rich condition. I have a new fuel pump module with its built-in fuel regulator which could solve the problem if fuel pressure is too high but at the rail I get the required 59 psi reading. Some sources say the rail psi should be 49 unless the vehicle has the 4 cable connection plug attachment at the PCM as mine does. I was about the change the fuel pump on my 2004 liberty 3.7 but mine does not have the in-trunk assess port already cut out so I will have to drop the fuel tank which requires additional research. Please let me know how your trouble shooting progresses as I will do for you. . . Regards. . .

@@danielvalletta417so the latest is this: the rich condition continued to climb and the car, a 2002 Ford Expedition, began to idle rough and hesitate, with one instance where the car turned off on my while slowly running on drive. After a test drive on the highway for about 30 miles, the vehicle started misfiring badly and must have gone into limp mode as it was not accelerating and stuck on 2000 rpms or lower. I swapped parts back to see if that would make a difference but nothing. Did a smoke test through the exhaust pipe but nothing came out, although I am not sure I did it correctly or if the results are definitive. Decided to check on the spark plugs and ignition coils for bank 1, even though I had replaced them less than 6 months ago (spark plugs oem motorcraft, ignition coils cheap aftermarket from Amazon) and found that one of the ignition coils, the furthest one in the back, had failed when testing it with a multimeter. Swapped the ignition coils for bank 1 and the car is back to running smoothly, the p0172 is gone (bank 1 rich) and power seems to be back. However, my ltft for bank 1 shows -14 and -8, which is much lower than what it was but still high enough, while bank 2 ltft is reporting almost the same numbers but on the positive side, so definitely an imbalance. The strange part is that the stft are showing within normal range, so im waiting to drive more to see if the ltft adjust accordingly. Also, all of my o2 sensors are stuck on lean status, although they are switching between 0.1 and 0.8 within 3-5 seconds once they come on. The o2 after the cat are always around 0.01 and 0.4 so they should be working fine. Im going to keep an eye on the vacuum leaks and see if things improve or if more testing is needed; I’m learning as I go from youtube videos 🤷🏻

Yes this was a temporary repair til a new part was ordered

About 6 lol

The computer sends out a 5v supply , and it is looking for a change in that 5v feed through the sensor you will have 5v a neg and reference back to the computer pretty much all sensor work this way

i’m trying to find out what i can do to create more power coming from my engine i want to make it fast it’s a 00” sport