[ZX5focused]

im having the same stumbling problem again wiht my car, symptons suggest DPFE or EGR. but i jsut had that whole system checked and fixed 1 month ago. so im skeptical that is the problem again.

im thinking it coudl possibly be the alternator and hear are my reasons why:
-car still doesnt idle right, sometimes jsut above or below the "correct idle"
-engine stumbles under steady throttle in any gear at any rpm, worse at lower rpms in higher gears.
-feels like its low on power, i know its low on power
-ive been getting the "alternator whine" threw the speakers.
-the last few days, ive been hearing a humming noise from under the hood when stopped at a light. i tried to check it when i got home but it wasnt doing it.

anyways do these sound like the symptons of an alternator takign a s***? would it cause all of these things listed?