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Thread: How to clean the Mass Air Flow sensor

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  1. #1

    How to clean the Mass Air Flow sensor

    Caution:This Tutorial is just for reference, i am not responsible for any injury,harm or damage that cause by your mistake.............

    After you driving your car every day, your MAF sensor will get dirty, this affect the car to collect the correct data, here is what we do to fix it.

    Here is what you need:
    A Wrench
    socket
    grove<---if you want,i didn't
    A brain (for common sense)
    Maf sensor cleaner
    ---------------------------------------------------------------------------------------------------------------------------------------------------------
    Caution: don't use other cleaner, make sure the one you use is for MAF sensor, if not, you will damage the sensor and it cost 260 bucks to replace it.
    --------------------------------------------------------------------------------------------------------------------------------------------------------
    This is what i use
    CRC MAF sensor cleaner. get it from Autozone, it is around $8............


    First unplug the connector,loose the clips that holding the Air filter box, the bolt which holding the wire and the one connect the hose and the sensor.....


    now you can take the whole thing off


    This is the sensor, spray the cleaner inside the sensor 3-4 seconds and let it dry.


    Follow those steps you just do to put it back and go take a drive, you should feel the different, at least i do.
    Good luck
    Sorry for poor english.
    Last edited by xcore; 07-12-2008 at 04:30 PM

  2. #2
    You are here entirely tooo much!!
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    so just spray let dry and thats it? sounds easy

  3. #3
    how about one for cleaning your throttle body?

  4. #4
    I tried it and it worked.

  5. #5
    You are here entirely tooo much!! Jeffylou87's Avatar
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    I have to try that.. We sell that at R&S

  6. #6
    where do you spray it exactly? just everywhere inside? or certain spot?

  7. #7
    I'm really curious wtf is inside that can that doesn't destroy the sensor and somehow makes it ''cleaner''.
    141,000 miles.

    6 dents.

    Yellowed, cloudy headlights.

    spraypaint on the door panels.

  8. #8
    I bet if you spray that in the throttle body with the engine running it will be exciting. (note the EXTREMELY FLAMMABLE warning on the bottom of the can)
    141,000 miles.

    6 dents.

    Yellowed, cloudy headlights.

    spraypaint on the door panels.

  9. #9
    Official TGC Pop-Pop Fishboy55's Avatar
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    Quote Originally Posted by dknight3 View Post
    how about one for cleaning your throttle body?
    Throttle body cleaner and a toothbrush is the only way to do it right.
    Chip

    2000 Basalt Black Metallic GTZ
    (Paint Code: Porsche LC9Z)

    Genuine experience carries a lot more credibility than the ability to answer a question.


  10. #10
    Official TGC Pop-Pop Fishboy55's Avatar
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    Quote Originally Posted by minhyxrated View Post
    where do you spray it exactly? just everywhere inside? or certain spot?
    The only portion of the MAF that makes any difference is the suspended diode in the center of the MAF tube. The rest is just a container to hold the diode.
    Chip

    2000 Basalt Black Metallic GTZ
    (Paint Code: Porsche LC9Z)

    Genuine experience carries a lot more credibility than the ability to answer a question.


  11. #11
    Official TGC Pop-Pop Fishboy55's Avatar
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    Quote Originally Posted by galantryinbattle View Post
    I'm really curious wtf is inside that can that doesn't destroy the sensor and somehow makes it ''cleaner''.
    It's a mild petroleum based solvent that doesn't destroy plastic...
    Chip

    2000 Basalt Black Metallic GTZ
    (Paint Code: Porsche LC9Z)

    Genuine experience carries a lot more credibility than the ability to answer a question.


  12. #12
    Experienced TGC Member milo111000's Avatar
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    mine's f!@&#37; up right now... need a new maf..

  13. #13
    Tried it out today, worked great! Now to install a short ram intake
    Last edited by Colton5419; 09-18-2010 at 12:58 PM


    72,500 miles as of 3/30/11

  14. #14
    ...lol i didnt use that stuff if you read the label it specifically says not for use on toyota turbo mafs, most lexus mafs and all mitsu mafs XD. not sure why but apparently its not good for it.
    2002
    4g64 dohc turbo 5-speed
    gt30r @20psi stock block,mbc
    2.5" tbe
    evo 8 ecu and maf
    large fmic w/ cx racing intercooler pipes
    wrx injectors @ 100psi fuel pressure

  15. #15
    Because most Mitsu's use a Karman Vortex air flow meter,not a heated wire type.

  16. #16

  17. #17
    Senior TGC Member 03-Galant-ES's Avatar
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    Quote Originally Posted by reiketsutsukigami View Post
    ...lol i didnt use that stuff if you read the label it specifically says not for use on toyota turbo mafs, most lexus mafs and all mitsu mafs XD. not sure why but apparently its not good for it.
    Yeah you're right

    10. DO NOT use on vehicles with a Karman-Vortex air flow sensor, e.g. Toyota Supra Turbos, Mitsubishi’s and most Lexus vehicles.

    I clean my MAF every time I clean my filter. I use QD Electronic Cleaner the CRC electrical parts cleaner made for wire connectors and the like. Then after that dries I spray the residue off with a can of the compressed air the keyboard cleaning stuff. The QD Electronic Cleaner is delicate enough for Karman-Vortex sensors. I used to work at an auto part store and this was the suggestion by our Senior Tech when I went up to him showing that I cant use MAF cleaner on my car.

    http://www.frontiernet.net/~jcray/04...C_QD_specs.JPG
    http://www.frontiernet.net/~jcray/04..._MAF_specs.JPG

    The QD electronic cleaner is very similar, but less concentrated I believe. The propellants are different as well.
    Last edited by 03-Galant-ES; 11-03-2010 at 11:35 AM

  18. #18
    When i got my self a new (used) MAF i used CRC electronic cleaner onnit before installing :)
    On the throttle body u can use brake fluid to clean aswell. Be carefull so u dont get any fluids into the manifold.

  19. #19
    Senior TGC Member mrg7243's Avatar
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    I just used the electric parts cleaner 20 min ago and it has not had a effect on it, just cleaner, the MAF is still good

  20. #20
    Senior TGC Member 03-Galant-ES's Avatar
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    Quote Originally Posted by mrg7243 View Post
    I just used the electric parts cleaner 20 min ago and it has not had a effect on it, just cleaner, the MAF is still good
    there ya go did you just clean the diode or the whole MAF? I dont mind cleaning the whole thing and then spraying the whole thing with the air cans to make sure there is nothing left when the car is started.

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