Go here http://www.clubfrontier.org/forums/f9/cabin-microfilter-2458/
and go to the 6th post down for photo...
Bum Link..
heres this:
and go to the 6th post down for photo...
Bum Link..
heres this:

I wouldn't want all that crap that gets trapped by the filter blowing into my eyes. My AC works fine with the "restriction." It works fine in my Maxima and they are charcoal impregnated filters.I took my filter out for good about 2 years ago, and when I did the AC worked better than ever. No restriction from the paper filter. But if you have allergies then you might want to keep it in.
LOL, I will never step foot back into that dealership. The filters are 11 bucks at O'Reilly's and it's the exact same filter.i had my oil change done at trophy an they told me i needed mine done i've got 80,000 on the od. they want 49.95 + tax. ha ill do it myself thank you. great post guys. Thank You
Clogged drain tube on your evaporator most likely. You should be able to see the tube sticking through the firewall on the passenger side. If no water drip from it while using your AC, it's clogged.OK, last week had blower motor go out. During the fix I found two other things. Original owner 2005 pathfnder 117K and hate to admit, but had not changed filter. But, there was no filter to change. (#1) Nissan had never installed a filter. I have one on order.
(#2) found water under passeneger carpet. after fixxing blower problem, dried out carpet real good. checked several days without rplacing door trim and was dry until today, wet as heck. Has my evaporator gone?
same hereMy truck didnt have fliters installed either. Explained alot.