Dash not blowing any air hot or cold

2006 gs300 just bought and dash does not blow any air hot or cold. I can feel
ac or heat just a little but its almost nothing. Air recirculation on or off its the
same. When I turn it to max cold and auto i hear what sounds like a flap
shutting suddenly and it will stay shut because I try to make it do it again and
it will hours. I pulled the glove box and put a new actuator in but that didnt
change anything. The blower motor is blowing air out and not sucking in. Any
suggestions? I think i bit off more than i can chew by trying to save $ and told
him that anything that is wrong with the car that i could fix, then i tried
removing the drivers side headrest. OMG, he doesnt even believe what a
nightmare that was. I am having fun, learning tools, cars, and cuss words!!
it's hard work that i always took for granted.  Thanks guys! ( women too if
there are any on here)