Adding cabin air filter to a Gen 2 How To

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zak

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One of the things I find lacking in my 95 is a cabin air filter. These came standard on the 96+ cars IIRC.

For those that have disassembled dash boards/HVAC systems on Gen 2 and Gen 3, how close are they? Could part (or all) of a Gen 3 HVAC system be adapted to Gen 2?

zak
 
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frosho

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I've been wanting to add a filter, too. I looked around on TCCA and found this how-to for adding them to 88-94 Continentals. It looks like it can be applied to Gen 2 Taurus. I haven't looked into it any further yet, though.
 
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zak

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It works! Thanks Matt! At least on my 1995 and I suppose all Gen 2's, this is a "near factory" install. The Gen I HVAC inlet looks to have a different shape.

Donor for the cabin air filter holder is any 1995 to 1997 Lincoln Continental. Remove passenger cowl/cover and pop out the cabin air filter. At the "sharp ends" of the ovals where the filter holder meets the HVAC unit (covered by screen) you will see two clips extending downwards. There are screwdriver slots between the edge of the oval and the clip, possibly obscured by a white soft glue/sealer. Insert a straightedge screwdriver on each side to release both clips. Grasp and pull/wiggle free the filter holder.

One my Gen 2, I could get the passenger side cowl cover off by removing the two screws at the center that hold the drivers side cover on. This avoided removing the wipers. There are three other screws to remove, one is behind the fender with the door open. Could have used a second pair of hands as I did crack the cover at the sharp radius where it transitions downward behind the fender.

You do not need to do any sawing inside the cowl as suggested in the Lincoln Continental link above. I carefully snipped out the screen on the SHO inlet, which allowed me to see the mounting area and grasp and wiggle free the Taurus inlet (no clips, just sealer/goo).

The Lincoln filter holder does need to be notched to clear the one inboard attachment point for the cowl cover. Unlike the Lincoln instructions above I did not remove the whole inboard upper corner - it is important to retain as much of this top portion as possible to deflect water/ice sliding down the windshield. By measuring and marking carefully with the Lincoln filter holder half way in, I cut a notch (hacksaw and razor knife) only in the attachment area, and only extending to the first radius of the new housing upper. The top outboard corner of the cover looks like it needs to be loped off, but careful measurement showed that the Gen 2 cover would fit right around it, as Ford designed it:evilgrin:.

Unlike the Continental install, there is one thing to watch out for. At the edge of the grille portion of the Taurus cowl cover there is a rib stiffener sticking down that interferes with the new housing. Resist the urge to cut the whole thing off, as it does reinforce the cover. A half inch notch rearward, and up to the cowl cover, as well as a one inch notch, extending forward (and up to the cover), is all that is needed. The rib will stick down partially into one of the filter pleats but that is ok.
The fresh air grille can let water onto the edge of the filter housing. To combat this I covered the two outboard rows of holes on the backside with heavy duty HVAC aluminum tape. I then painted in each black square on the top side with black silicone RTV. Did not come out perfect but gets the job done right - no water path to the filter housing.

A word about cabin air filters. Per Rockauto there are a half dozen different brands, including Motorcraft FP16 and ATP FA2. I wanted a premium filter figuring this would only get changed every couple of years given the hassle of removing the cover. Found out ATP is an OEM supplier, and makes two different grades of filters for the 95-97 Continental ap. The FA2 is the deluxe version, five layers with the center layer being activated carbon to take some fumes out of the air, so that is what I went with (got a couple on closeout, and there is a rebate running right now).

Enjoy a feature that only comes on some, not all, new cars. At full HVAC fan speed it does not seem like the filter is causing any sort of excessive pressure drop, and no more pollen sneezes!

zak
 

32MTX

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thats good and all but if its picking it up by the cowl isn't the cabin air filter only running when your not recirculating the A/C?

when its recirculating and picking up air from the cabin, that is the part that needs the filter the most! perhaps doing both would cover you for both directions. The cowl ones help from critters/twigs/leaves/etc...
 

zak

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thats good and all but if its picking it up by the cowl isn't the cabin air filter only running when your not recirculating the A/C?

when its recirculating and picking up air from the cabin, that is the part that needs the filter the most! perhaps doing both would cover you for both directions. The cowl ones help from critters/twigs/leaves/etc...

To my knowledge current Ford cabin filtration systems filter at the inlet and only when outside air is being called for - so you are correct when recirculating (humid AC use) it is not passing accross the filter. Not sure of other makers.

You could probably glue one if those thin dark grey window air conditioning filters over your recirculation door. But realistically it is outside dust that comes in unless you are a smoker or something.

I did take a few pictures and will see about posting them soon - I have never posted pics to this site.
 

zak

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Recirc door is in passenger footwell, towards the outside of the car, has a very coarse mesh grille over it (probably just enough to support one of those thin window air conditioner filters).

I plan to go in this door with a computer vacuum rig and clean off the AC and heater coils now that they will only be seeing filtered air for the most part.
 

32MTX

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yeah I live in south florida so its always on recirculate

the car has the worst stuff inside of it, fibers from upholstery, dead skin sells, etc.... thats the type of shit that clogs the evap
 

jelloslug

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I designed a real filtration system a while back but I never got around to make it. It involved the half circle shaped plenum that has the recirc door in it. There is a spot in that plenum that you can cut a 2" wide slot in that you could slide a custom filter in and then make a cover for it to seal it back up. It would filter the outside air and the recirc air.
 

frosho

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So, how about them pictures? :) I can host them on my photobucket account if you want.
 

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