On the 400 Rancher, check the oil , like for dirty oil. Honda auto tranny's do not like old or dirty oil. See how it shifts in auto and ESP mode. My personal opinion is the 400 AT Rancher is over rated. compared to the 350 Rancher. If you are looking for an auto Honda ,go with the 420 Rancher , 500 Ruby, or the Rincon 650/680 (trail rig only for the Rinny).