09-07-2008, 10:26 AM
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#31
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Banned
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Join Date: Aug 2008
Location: Colorado Springs, CO
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Banned
Join Date: Aug 2008
Location: Colorado Springs, CO
Posts: 4,086
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What will happen if you just put nothing in there? 
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09-07-2008, 02:10 PM
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#32
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Super Moderator
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Join Date: Oct 2005
Location: California
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Whatever dust, dirt or pollen that gets sucked in from the under the windshield cowl will get blown into the interior. It's no different than cars of yesteryears that didn't have a cabin filter. Cabin filters I think first showed up in luxury cars in the 90s.
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'06 Limited V6
Amy's Mom: "Who's that you're talking to?"
Amy: "It's Uneek, spelled in a 'unique' way."
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09-17-2008, 01:10 AM
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#33
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Member
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Join Date: Sep 2007
Location: Edmonton, Alberta Canada
Posts: 406
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Member
Join Date: Sep 2007
Location: Edmonton, Alberta Canada
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I have 33K on ours. I think it's time to replace it!
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2007 4runner Sport Edition V6, Black.
2011 BMW 335Xi Special Edition, Jerez Black.
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09-20-2008, 09:33 PM
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#34
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Banned
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Join Date: Aug 2008
Location: Colorado Springs, CO
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Banned
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Location: Colorado Springs, CO
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I sprayed Eternity cologne on the entire air filter. Now my interior smells like me. 
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12-11-2008, 03:24 PM
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#35
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Junior Member
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Join Date: Dec 2008
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Junior Member
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Hi all,
Just came across this forum - looks great! I have a 2008 4Runner, it is my third consecutive 4Runner starting in 1994! The first two were green though, this is the Driftwood Pearl (tan) so I feel I am really branching out now
I had a question on the cabin air filters - I have not pulled mine out, I have read about replacing them and your comments on making your own replacement, but my question is, can one just wash them with water or something to clean them and continue to use the same filter?
Thanks!
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12-11-2008, 03:52 PM
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#36
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Senior Member
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Join Date: Feb 2005
Location: San Antonio, TX (4Runner sold 8-2018)
Posts: 1,449
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Senior Member
Join Date: Feb 2005
Location: San Antonio, TX (4Runner sold 8-2018)
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It is a paper element that will disintegrate with water on it.
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was: 2005 2wd V8 Limited, one owner (me), 155K miles
now: 2019 Kia Sorento SXL V6
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12-11-2008, 05:17 PM
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#37
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Junior Member
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Join Date: Dec 2008
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Junior Member
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Thanks, when I got back to my car I checked and it said no oil or water, just air.
I pulled mine, and it too had some leaves etc. in it. I blew it out from the back with compressed air, and it looks pretty good now!
Thanks again for this forum!
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01-04-2009, 10:53 PM
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#38
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Member
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Join Date: Nov 2008
Location: Denver Area
Posts: 636
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Member
Join Date: Nov 2008
Location: Denver Area
Posts: 636
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Yep, the furnace filter solution is the way to go.
Save yourself a $100/year and breath easier.
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Burt
2008 SR5 V6 4WD
1984 1/2 GT350 Mustang
2019 F250 SuperDuty
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01-05-2009, 05:21 PM
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#39
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Junior Member
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Join Date: Jan 2009
Location: Lubbock,TX
Age: 42
Posts: 16
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Join Date: Jan 2009
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Subscribing because this sounds better than having to replace one from the dealership. So just a furnace filter from Home Depot?
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2006 4Runner, V6, 2wd (Wife's Car)
2006 Avalon XLS (Family Ride)
2003 SVT Cobra (My toy  ) 740hp
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01-05-2009, 08:53 PM
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#40
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Member
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Join Date: Nov 2008
Location: The Peoples Republic of New York
Posts: 271
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Member
Join Date: Nov 2008
Location: The Peoples Republic of New York
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I tried this idea, but noticed that the heater system wasn't performing as well as it ought to, so I did an ad-hoc comparison of airflow between a used OEM filter & the filter I made from the filtrete material. Basically, I cut a strip of paper, then used the output of a vacuum cleaner to blow air through each element, noting how high the airflow lifted the strip of paper. The OEM element was significantly less restrictive. So, I went to the dealer, coughed up the $22 bucks for a replacement.
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2006 4Runner 4x4 V-6 SR5 Driftwood Pearl.
2000 Tacoma 4x4 V-6 SR5 Ext. Cab TRD Sunfire Red Pearl. (R.I.P)
Poor Little Truck. Met the crusher at 51K miles, a victim of the Toyota frame rust buyback program.
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01-06-2009, 12:41 AM
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#41
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Member
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Join Date: Dec 2008
Location: Memphis TN
Age: 67
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Member
Join Date: Dec 2008
Location: Memphis TN
Age: 67
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I wish I had saved mine now to do my own comparison.
I made one from a Filtrete filter like this one
I did check it for flow by blowing some air through it and it seemed to have little or no blockage. I can't imagine the OEM filter flowing BETTER than the HVAC filter.
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2007 Driftwood Pearl Limited
Last edited by ALLEGRO; 01-06-2009 at 12:55 AM.
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01-06-2009, 09:28 AM
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#42
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Super Moderator
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Join Date: Dec 2002
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You can get a home furnace filter that's too restrictive. We had a member try a carbon filter and it nearly stopped the airflow.
The Toyota filter is probably comparable to the inexpensive spun-glass filters for your home. I have been using good quality home air filters (similar to the Filtrete Allegro has in his post) to make my 4Runner filters. Airflow has been great, and the filter does a better job IMHO than the Toyota filter.
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2003 SR5 V6 4WD Titanium with cladding
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01-06-2009, 09:46 AM
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#43
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Join Date: Nov 2008
Location: The Peoples Republic of New York
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Member
Join Date: Nov 2008
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The one I tried to cut one from was a 3M Filtrete Ultra Allergen, performance rating 1250.
It may very well have been a more effective filter, stopping smaller particles, but it was too restrictive. Maybe there are other ratings available, but I'm not going to worry about it. Maybe next time, I'll look at other filters, but for now, the factory job was only $22 bucks, so that will do.
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2006 4Runner 4x4 V-6 SR5 Driftwood Pearl.
2000 Tacoma 4x4 V-6 SR5 Ext. Cab TRD Sunfire Red Pearl. (R.I.P)
Poor Little Truck. Met the crusher at 51K miles, a victim of the Toyota frame rust buyback program.
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01-11-2009, 12:17 PM
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#44
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Member
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Join Date: Dec 2004
Location: Reading, PA.
Posts: 831
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Member
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Quote:
Originally posted by jharris2
You can get a home furnace filter that's too restrictive. We had a member try a carbon filter and it nearly stopped the airflow.
The Toyota filter is probably comparable to the inexpensive spun-glass filters for your home. I have been using good quality home air filters (similar to the Filtrete Allegro has in his post) to make my 4Runner filters. Airflow has been great, and the filter does a better job IMHO than the Toyota filter.
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I too have used the 3M Filtrete Filters and have not noticed significantly decreased air flow.
BTW, did anyone notice that the 3M Filters do specify that the filters are to be inserted a certain way in the home heating system?????
Kind of makes one think that there is a right and wrong way to insert them if they go to the trouble of labeling each filter with an "Airflow" arrow.
Wonder if the same holds true for using them in a 4Runner??? Personally I have always noted the "Airflow" pattern and labeled that on each 4Runner filter I have made.
One would also think that the higher the rating 3M filter one uses the more restrictive the airflow would be.
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Charlie
'04 SR5, 4X4, V8, Titanium, Roof Rack, DD Cargo System, 17" Alloys, Rear Spoiler, Preferred Accessory Pkg
SOLD 12/2012 
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01-11-2009, 01:51 PM
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#45
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Super Moderator
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Quote:
Originally posted by charlier180
I too have used the 3M Filtrete Filters and have not noticed significantly decreased air flow.
BTW, did anyone notice that the 3M Filters do specify that the filters are to be inserted a certain way in the home heating system?????
Kind of makes one think that there is a right and wrong way to insert them if they go to the trouble of labeling each filter with an "Airflow" arrow.
Wonder if the same holds true for using them in a 4Runner??? Personally I have always noted the "Airflow" pattern and labeled that on each 4Runner filter I have made.
One would also think that the higher the rating 3M filter one uses the more restrictive the airflow would be.
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 I've used the Filtrete for a long time -- they are cheap enough to change more frequently.
Which way do you install the airflow -- with it going up or down? I can't remember which way I put it.
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