What is causing my automatic to shift hard into drive, some times die?

Car is turbocharged
F4A33-1 automatic transmission
ranges from shifting perfectly to slamming the car
does it going into reverse and drive
might be affected by the huge vacuum leak I have, I believe it is in my -intake manifold
all gears shift fine except first gear seems to some times shift hard into -second might be holding in first gear too long(like it will rev to 4000 -before going into 2nd
another odd thing is if I accelerate a little harder than normal and let -off close to where it seems to want to shift it will kind of lurch from -that