transmission on 1995 Volkswagen Golf

I have a 95 VW golf III automatic. the tranny has a problem shifting when i accelerate. this problem occurs every time i drive the car. it will get it's rpm's up too high and when it finally goes to shift, it hits hard and i can feel it hit while driving?

Asked by for the 1995 Volkswagen Golf
I would first inspect the tranny fluid. If the fluid is full it may be an internal transmission failure or valve body failure.