onegreedy

i noticed the other day i couldnt get any heat on the floor, then yesterday whwen i turned the ac on it only blew out of the defroster, so i took the radio out and checked it out,

the door that opens from vent to defrost works but poorly, if the fan is on low it will open very very slowly, it i turn it on high it will actually push the door back to the closed position if it is not completly opened

what controls this, is it a vacume control or electronic, it does not seem to be manual
but who knows

also does the entire dash need to come out to axcess this?

thanks