Hello guys im new here

Ive just got a 300E 2.6 that has an auto trans problem it gets stuck in 2nd and wont change up. When I first got it I could start of in drive no probs when I put the foot down it will kick back to first then stay there. If I just leave it get up to about 40-50kms hour then it seems to slip
(rev up).
Any help would be appreciated.
Ive not touched anything yet.
Cheers
Steve