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MAF sensor cover? why is it there and what does it do?

Discussion in '1st Gen. Tacomas (1995-2004)' started by keakar, Mar 23, 2015.

  1. Mar 23, 2015 at 2:19 PM
    #1
    keakar

    keakar [OP] Well-Known Member

    Joined:
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    karl
    louisiana
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    2006 4runner sport 4.7L V8 (white)
    used to have - 99 2.4L I4 5 lug & 04 prerunner v6
    I just replaced my MAF sensor and I didn't know that it had a removable metal outer cover over it.

    I found out it had a removable cover when I accidentally dropped the old one and the cover just popped off.

    there was no glue or anything to indicate it should be permanently attached to the old MAF sensor, so I put the cover back on over the new MAF sensor the same way it just sat on top of the old one figuring it has to be there for a reason and must serve "some" purpose but I still would like to know why and what does it do?

    also as a side note if someone wants to know the part number for their MAF sensor its under this metal cover in big huge bold letters but until you take off the cover you cant see anything but a very faint engraved number impression on the cover if you can even read it.

    the part number on my MAF sensor cover is 22224-75020 and the part number for my MAF sensor by itself is 22224-75010 so I guess this is why replacement MAF sensors always list both numbers together as the part number they replace.

    does anyone know and can explain this MAF sensor cover?
     
    Last edited: Mar 23, 2015
  2. Mar 23, 2015 at 3:58 PM
    #2
    keakar

    keakar [OP] Well-Known Member

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    louisiana
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    2006 4runner sport 4.7L V8 (white)
    used to have - 99 2.4L I4 5 lug & 04 prerunner v6
  3. Mar 23, 2015 at 4:49 PM
    #3
    Mod

    Mod Well-Known Member

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    CR, WA
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    stock
    Load spreader. Us peasant parts replacers were cranking the screws down to tight and popping sensors.

    Sounds good,,right?.

    Go with it, if you choose. Otherwise,,another unnanounce evil changeup on the assy line is probably a little closer to target.

    The bottom sealing cover popped off of mine when I serviced it the other day. A few tack dabs of sealer adhesive to hold that plate in alignment, back in it went a day or so later.
     
  4. Mar 23, 2015 at 5:10 PM
    #4
    frizzman

    frizzman Well-Known Member

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    OME 3", Tundra 17's, Cooper S/T Maxx 255/75-17, hitch w/ 7-pin, Leer cap, JVC head unit w/BT, LED lights
    mine never had that metal cover on it. came the normal way from the factory :notsure:
     
  5. Mar 23, 2015 at 7:49 PM
    #5
    keakar

    keakar [OP] Well-Known Member

    Joined:
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    karl
    louisiana
    Vehicle:
    2006 4runner sport 4.7L V8 (white)
    used to have - 99 2.4L I4 5 lug & 04 prerunner v6
    I just figured maybe it was some kind of a heat shield protection or something?

    I just cant see what purpose it serves at all
     

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