Changes: Engine AirIntake Filter

Revision as of 19:34, 18 May 2022

The stock AirIntake FilterHousing is in the RightFore corner of the engine compartment. Shown & listed below are several PanelStyle PaperElement Filters, Width * Length * Height noted, that fit in this housing.

Tools are not required to open the FilterHousing; Filter should be removed+inspected about every 6mths & replaced if dirty, more often for high usage or when road conditions are notably dusty\muddy\snowy:

Shutoff Engine, then disconnect MAssFlowSensor & PositiveCaseVentTube from the AirIntake Duct.
Open the 2 QuickLatches on the inboard side of Filter Housing UpperCover.
Slide UpperCover ~1inch sideways to release it, slightly compressing the Duct accordion.
Lift UpperCover to reveal the Filter; a BungyCord is handy to hold the UpperCover out of the way.
Remove+inspect the Filter; replace with a new Filter if visibly dirty.
CompressedAir <60psi BackBlow is a temporary fix for a dirty Filter until a new Filter is available.
Remove any dirt or debris from the Filter Housing LowerBody; RodentNests are often found here.
Reverse above procedures for reassembly; don't forget to reconnect both MAFSensor & PCVTube.

Housing LowerBody Modification

In 2020May, I began experimenting with the FilterHousing LowerBody, as pictured below, removing the InletRestrictor & eventually cutting away most of the box, leaving only mounting pins & basic frame. An "Extreme CheeseBox Mod" , it removes a potential RodentNest, maximizes AirFlow, stays compatible with factory Filters, & costs $0. If unsatisfactory after a few months running, I'll revert to a JunkYard original.
Update 2021Nov: after using this modification over a year, conclusion is that it actually created problems: IntakeAir Temp ran ~10f hotter, IntakeAir Noise was much louder above 3500rpms, & Power\Mileage was not improved. An unmodified FilterHousing from a JunkYard ~$30 is now re-installed; LESSON LEARNED!

Links To Related Info

Thanks go to the brave souls who've preceded me in similar adventures & freely shared their experience:

http://youtu.be/pxXr6W5bZtg?t=0

http://youtu.be/mBn5a__c-yI?t=39

http://youtu.be/RdXVxbd59es?t=36

http://youtu.be/C9RYoL0mLyw?t=1

http://youtu.be/MSjQPDT-C8s?t=1

http://youtu.be/BDV7MyqQvSA?t=2

http://youtu.be/Z8FaQQ4Tww8?t=6

http://youtu.be/CpxHe7sZwsE?t=0

http://www.ranger-forums.com/engine-drivetrain-122/how-airbox-mod-132753

http://www.ranger-forums.com/engine-drivetrain-122/how-air-silencer-removal-10455

https://www.explorerforum.com/forums/threads/3rd-gen-air-box-mod.278734

https://www.explorerforum.com/forums/threads/some-mods-today-swiss-cheese-silencer-silencer-panel-and-k-n-sotp-yes.434780/page-2

@@ Line 28: / Line 28: @@
 ==Housing LowerBody Modification==
 [http://vignette.wikia.nocookie.net/2001fordexplorersporttrac/images/8/84/2001.Ford.ExST_Engi.AirN_Filt.Box2_Ford.f77x-9a612-ac.GIF/revision/latest/scale-to-width-down/640?cb=20200604034521 In 2020May, I began experimenting with the FilterHousing LowerBody, as pictured below, removing the InletRestrictor & eventually cutting away most of the box, leaving only mounting pins & basic frame.] [http://www.google.ca/search?q=filter+cheese+box+modification&tbm=isch&ved=2ahUKEwjbzu2rlYruAhVbBc0KHcOACIwQ2-cCegQIABAA&oq=filter+cheese+box+modification&gs_lcp=CgNpbWcQA1DWSljWSmDnUGgAcAB4AIABYYgBYZIBATGYAQCgAQGqAQtnd3Mtd2l6LWltZ8ABAQ&sclient=img&ei=rSz3X5vEItuKtAbDgaLgCA&bih=612&biw=1366 An "Extreme CheeseBox Mod"] [http://web.archive.org/web/20150403105842if_/http://www.ranger-forums.com/attachments/engine-drivetrain-122/60941-how-airbox-mod-mice.jpg?dateline=1372707992 , it removes a potential RodentNest], maximizes AirFlow[http://vignette.wikia.nocookie.net/2001fordexplorersporttrac/images/4/48/2001.Ford.ExST_Engi.AirN_Filt.Papr_Ford.fa1658.GIF , stays compatible with factory Filters], & costs $0.  [http://www.google.ca/search?q=%2B%22f77x-9a612-ac%22&tbm=isch&ved=2ahUKEwjS3evI9fTpAhVB9qwKHUeiAf0Q2-cCegQIABAA&oq=%2B%22f77x-9a612-ac%22&gs_lcp=CgNpbWcQA1Dnq8sLWLeIzwtg1I3PC2hHcAB4A4ABsAOIAfpjkgEKMS45MC41LjEuMZgBAKABAaoBC2d3cy13aXotaW1n&sclient=img&ei=T5nfXpL6NMHsswXHxIboDw If unsatisfactory after a few months running, I'll revert to a JunkYard original.]<br>
-Update 2021Nov: after using this modified FilterBox for a year, conclusion is it actually created problems: with the modification, IntakeAir Temp was hotter by 10~15f, IntakeAir Noise was much louder above 3500rpm, & no gain in Power\Mileage was achieved; an unmodified AirFilterLowerBox & AirInletVenturi from a JunkYard ~$30 is now installed; lesson learned.
+Update 2021Nov: after using this modification over a year, conclusion is that it actually created problems: IntakeAir Temp ran ~10f hotter, IntakeAir Noise was much louder above 3500rpms, & Power\Mileage was not improved.  An unmodified FilterHousing from a JunkYard ~$30 is now re-installed; LESSON LEARNED!
 <gallery hideaddbutton=true position=left spacing=small bordersize=none captionposition=below captionalign=left widths=329 navigation="true">
 Image:2001.Ford.ExST Engi.AirN Filt.Box1 Ford.f77x-9a612-ac.GIF|AirIntake Filter Housing LowerBody<br>* Original With AirFlow Restricted<br>