I've got a 2000 Honda Accord V6 b7xa transmission that I and a buddy did a rebuild on. Before we started the rebuild the transmission was slamming into drive and slipping gears. So we spent a while rebuilding the transmission with a kit and when we went to start it Drive, and 1,2,3 we're not engaging, the only gear I have that works is reverse. I'm stumped on the problem because Im having a hard time finding someone with the same issue, and I called the local transmission shop and they said it probably has something to do with the valve body(we did clean and add some new springs too) so if you lovely people in the Honda forums can help it would be really appreciated.!

 

(Update: it will engage into 1rst if It revs up to 4k rpms)