seb80

Hi all, I have a a4 3.0 v6 auto. I have replaced the engine as old one chewed it self up but hey new recon is in and now it won't go into gear. I have had the engine out again yo see what I messed up on, could not see anything so put it back in. I still can't select any gears it sounds like something is happening when I move the gear know about but just won't go into gears. Could anyone help please? Many thanks in advance I'd love to drive it again.