For what it is worth, oil pumps can wear out, even w/ regular oil changes. A lifetime ago, I had the oil pump on an old mustang 6 wear out, causing the lifters to rattle. After replacing the pump, all was well.I have decided open mine back up... I am go to inspect and probably replace the oil pump as well as drop the oil pan to inspect/clean. I believe the low oil pressure is real. When it goes low oil pressure it sounds like the top is starving for oil... I immediately shut it down at that point so as not to damage anything else. At this point I have nothing to lose but go back in and see what's up. I hoping I find something, just hope the solution isn't a new engine lol...
Ole Blue lives again!!!! After several short drives around the block ...all good (no low oil pressure or rattles)... went on a drive up to 60mph, all good, turned around and gave a little gas to kick in turbo (just minimal) all was great no issues, no low oil pressure and no timing chain rattle!!! I guess when good Pennzoil Platinum full synthetic 5W-30 is allowed to pump around the engine it works ALOT better!!!
NOTE: keep an eye on coolant levels when first starting, level settles and needs attention.
Also... After sitting overnight after test drive, no leaks or drips of any kind.
Now to fix the AC... thats a must in TX 1000F heat!!!
Thanks for all yalls help and advice... hope this helps someone else troubleshoot their problems.
So I finished up with the timing chains a couple of days ago, she started up and all those codes are gone but now I have a persistent misfire at cylinder 2 and codes for rich 02 sensors at both exhaust sides, any ideas? I swapped plugs and coils on that cylinder and now I'm afraid valves got bent at some point because the exhaust o2 sensors are reading richWhat prompted my repair... I had the timing chain rattle for almost a year until my truck jumped time and a turbo went out, so I had to do the repair. It looks like your list has everything you need. Someone on here has a great list with part numbers and everything... I cannot remember who has it, but I ran across it reading everyone's posts about their repairs. I will be glad to help if you have any questions.