Hello.

I have a 1995 Firebird 3.4 automatic and its been running very good
for a car 10 years old. Two weeks ago it started acting odd, runing ok
but sometimes when going up a hill the rpms would rev up and the power
didnt seem to translate to forward motion.

It would catch itsself a secound later and be fine again. Thinking it
was low on transmission fluild (and it was alittle low but not out) I
added some.

This seemed to solve the problem for awhile and then yesterday it
started again but worse. When driving about 8 city blocks it started
to do the same thing but last longer. If I would try to push the car
above 30 mph or so the car revs' but doesnt really take off like it
should.

In a unrealted (I think) problem in park I hear kinda a higher pitched
vibration noice I didnt hear before. In driving (when fluttering) I
hear a sound that seems to be air or something... but that could be
unrelated.

Also (once the car is warmed up and doing this problem behavior) it
doesnt seem to want to reverse at all! If I shut the car completly off
and turn on its fine again, it drives forward and reverses fine for a
bit (lets say 4-8 city blocks) and then does it again (loses reverse
and don't go faster than 20-30 mph).

It seems like something is being flooded and then when the car is off
the fluid levels go down and its ok again until driven more.

I really like this car allot so I hope its nothing too major. I'm sure
its not going to be pretty but what do you think that could be? Any
guess on how much to fix?

Thanks in advance for your advice on getting my firebird back to its
normal great driving.