Alright my gf bought a 94 Camry (LE i believe) and its a great car, been trying to work on it a little fix some problems here and there. Ive have a Acura Integra and ive done alot of stuff on cars so im not a toal noob

.
So i have a question, the car is a automatic (not somthing im used to

) and when you take off, it always makes this strange clunk noise, its not incredibly loud but you can notice it and feel it. It only happens when you take off from a stop or a pretty slow speed. I thought it was happening a certain RPM but im not sure. It almost sounds/feels as if its coming from the bottom of the car, but that doesnt really mean anything. The car runs fine, goes through the gears fine, no other noises. It could also be desribed as a Click. Also, when giving it a good amount of gas (getting the RPM to go up) and then suddenly taking your foot off quickly, the car like jerks, well basicly its not a smooth down shift, as that normal?
Is her tranny going bad?
Oh and what gen is her camry?