I looked up the Google AI answer to the simple
question:
If a car stumbles or stalls when cornering, after installing a new in-tank fuel pump, what could be the cause?
answer:
"Incorrect Installation/Kinked Lines: The act of turning or cornering shifts the fuel in the tank, which can cause issues if the new pump assembly (especially the internal "bucket" or reservoir lines) is not sitting correctly, a fuel line is kinked, or a "sock" filter isn't properly submerged.
Action: Recheck the installation in the fuel tank, ensuring all internal lines and the pump assembly are correctly seated and not kinked, and that the fuel pickup is not hitting the tank sides or picking up air on curves."
I already had surmised that it was the most likely cause, so the only thing I did on my X today (after moving my wife's Halloween stuff to the shed, and bring in her extensive Xmas decorations (including Santas of every sort and description). Took all day. She's skipping Thanksgiving decor, since it just doesn't yet feel like Fall.
Well, anyway, I skipped the vacuum test of the FPR, and checked air box and MAF, instead. Both OK, then un-installed the fuel pump. Once out, I checked the sender for proper operation using a multimeter, and it is OK, too (I'll need to use OBC test 21 to reset the gauge, if I ever put it back on the road.
I took a picture looking inside the tank after I removed the pump, and saw the three hoses that I might've been crushing when i did the first installation. I took my time, and made sure I felt the pump drop into the deep well.
we'll see tomorrow if it made a difference.