Well I just took it in to get the windows tinted and its sitting there right now. While I was waiting on a ride back home, I took a look at it and it looks like replacement can be done from above. The engine was too hot to stick my face in there and try to blow in the tube, but I found where you are talking about It T's off. so when I get the car back tonight, I'll let it cool off and give it the ole' blow test hah.