Ok so just a couple days ago, my A/C starting making a weird grinding sound, this sound usually coming out of far right (passenger) air vent. From the glove box area. Usually I have noticed it does this when the Recirculation button is on...has anyone else experience this.....jeez all this little problems all the sudden. Usually I can turn the A/C off and then turn it back on and it will stop, however last time this happened, I turned my A/C off and then On and it was still making this noise, I have the Automatic Temp Control...

 

My First guess would be the blower fan.
http://maxima.theowensfamily.com/tsb/NTB99-071b.pdf
I have had the problem for a year now just havent gotten around to fixing it. I noticed if you keep it on Auto it tends to stay quite.

 

it's the sound of blower fan
try cleaning it, if not working, replace it.

 

ya its the blower fan, i had this problem too

 

^^^Yep,me also.Had it replaced under warrenty.Try cleaning it first.

 

what they said.... clean it

 

Thanks guys I will check it out tomorrow.

 

Mine made a ratteling noise so I pulled out the filter to find a bunch of leaves in there ratteling around I just turned it on with the filter out and all the crap blew out and the noise went away you may just have stuff built up in there thats making the noise it may not be the blower itself

 

^when you say your filter, do oyu mean your In cabin microfilter or whatever its called? How do you pull it out? On my Acura its in the glove box but its a pain to get out, I have not checked the Maxima tho...thanks

 

you have to take out the glove box to get the filter out

 

leaves might in the blower fan also, check that.

 

My A/C also makes a weird sound sometimes...and it definitely sounds like leaves stuck in there. So you actually have to take the whole glovebox out to get to the microfilter?

 

yes, it's easy.
4 screws, release the yellow socket not unpluging it from the glove box, take off the light, and you are ready to play.

 

how do you check this...I understand how to check the in-cabin microfilter, but how do you check for leaves in the blower fan....

 

by taking it out.
it's just next to the microfilter.