Alright, buckle up! So got this truck for $1200(and I'm not complaining about putting the work in on it) it's a 1999 F150 standard with a 4.2L baby engine. Had some codes pop up P0171, P0174, and P1131 and I have tried literally everything besides replace the O2 sensors and PCM. MAF replaced, throttle body cleaned, new upper and lower intake gaskets, new PCV and hoses, new fuel filter, new plugs and wires, new Cam Position Sensor, cleaned everything when I did the gaskets... And I mean everything! But they still pop up!
**Don't know if this is relevant or related**
When I was making a drive about 30 minutes, the truck would not wanna drive and had some trouble starting back up. I'd have my foot to the floor and it would pop, move about as fast as a snail, and couldn't get it out of 1st. I would shut it off for 10 minutes at a time then it would be fine for about 30 seconds then start acting up again. Went through and couldn't find any vacuum leaks, fuel presser tested at 30PSI with engine running. Any ideas would help before I push this thing off a cliff🙃