AJ suited, should I check-raise this turn?

grunch

I see no value in check-raising the turn.

without reads MP3 has a huge range of hands to call the flop and bet (assuming you check the turn), MP3 could hold 99, TT, JJ, AT, A9, and you could have been reverse dominated or slowplayed

I consider check-folding this turn, you bet the flop and got called and you are unimproved on the turn, the pot is too small to call down

do you expect MP3 to fold to a check-raise?, I think if he has a hand worth betting the turn that he will showdown.