96 Jetta Gl Auto Tranny Problems! Help!

I Have A 96' Jetta Gl Auto. I Had Problems With It Dying When I Put It In Drive Or Reverse, But I Had The Motor Mounts Replaced, Cleaned The Maf And Throttle Body And It Stopped Doing It. Three Months Later Now I Am Having Problems Again. When I Put It In Gear It Does Not Engage Until I Get On Gas In Both Reverse And Drive. I Noticed It Started Doing It Drive Though. It Will Sometimes Rev Then Shift Hard In 1st And 3rd. It Relly Sucks. It Does Fine Once On The Freeway. But Stopping At Lights It Does It Every Time. Is The Tranny Going Bad? Could It Be Something Electronic? Oh Yeah I Do Not Have A Dip Stick. It Is Sealed Tranny. Please Help

check the water in the radiator when they are a little low the are hard to start they have a senor the cut the car off and cause other problems