help!!!!!!!!!

:banghead: changed egr valve, rotar, cap plugs and throttle body positioning sensor and now van surges while in drive. checked all vaccuum hoses. appear to all be good. rpm is set at aprox 1000. also, does the tramission have a vent tube? i don't have a clue what else to do or check. please help!

Is the surge an on going thing or did it start after changing the mentioned parts? Yes.the tranny has a vent tube.It's a rubber hose with a "U" shape metal end that usaully clips on bottom of air intake duct.