Interior air filter

About a couple months ago a loud sucking/popping noise started coming from behind the glove box where the interior air filter should be. This only happens when the recirculation button for the A/C is pressed on. As soon as I press the button off the noise goes away. Does anyone know what this could be?

I've open the little flap and nothing foreign is in there but the noise seems to be coming from the back side of the unit.

 

I read somewhere, think it was the cabin filter mod (in cheap mod link), that the 2005 does not have a cabin filter, but that is where it is located. If this helps.

 

My 05 didn't have one until I did the recertification on my own & added it. Never has made any kind of sound before or after, with or without the filter.

 

I have a '05 and a cabin air filter.

 

Came like that new? Mine came from CA plant, maybe the Mexican plant actually put them in on assembly line?

 

Go to homedepot and buy a .99 furnace filter,cut it down to 8"x8.5" and slip it in....................beats paying 35.00 for an oem!

 

35.00??? fuck that, 14 shipped was plenty reasonable for oem.

 

Yes, mine is from factory and built in Mexico.

 

What craziness............Had to buy one made in Mexico to get all the parts that are supposed to be on it.