I just put an engine in my 95 altima and i was driving it tonight after i fixed the speed sensor and when i stopped and cut the car off and cut it back on i didnt have reverse, it would go forward when i mash the gas in neutral and when in drive it acts like im holding the brakes through first gear and first only. when its in reverse it is acting like it is going into drive and reverse at the same time??? i done a self diagnostic on the transmission and it was clear of malfunctions.
PLEASE HELP!! ):
THANKS!!

also when the air conditioner temp slider is all the way on cold it makes a annoying clicking noise like the control door in the evaporator box it stuck but if i move the slider slightly to the right it stops.. anything i can do? or should i just not mess with it?? haha