Codes after new headgasket. Water pump.

update found the purge sensor disconnected. plugged in got 34 mpg in traffic today. normally 38-40 on 70 degree days.
i don't think its 1 tooth off. i listened here thinking it was a head gasket with a cheap bad borescope..the pistons looked night and day all good.
i get the rumble when it starts 40% of the time. and on taking off till 30 mph. if i floor the car it goes fast.
in the past a clean egr cooler fixed this. runs just a little worst before much better.
in the suburbs. the car gets 40 mpg to 50 mpg. before new gasket.
i also had Rumble with a bad hybrid battery. could I have a bad injector.?? thanks in advance