10-07-2011, 08:03 PM
this is probably the air filter, doesn't matter if you turn the AC on or off. It;s just an air filter so polen and dust doesn't come in in the car. I have on in a 2001 civic and love it, I don't have one in my older civic and I miss it a lot. takes me 3 minutes to change. take glove box out, take filters out, wipe plastic frame, put new filters in, insert back into the car, replace glove box. OK, maybe 5 minutes.