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MAF Sensor Cleaning..

Discussion in '1st Gen. Tacomas (1995-2004)' started by eric70412, Feb 5, 2009.

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  1. Jan 20, 2016 at 8:53 AM
    #41
    Dilleytech

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    Dilleytech Well-Known Member

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    I did but just a little as it didn't really feel right to me but I didn't touch anything with the straw. Did you notice any performance increase? My truck feels like it's running a little stronger but that might just be my imagination telling me it should feel better.
     
    Dilleytech, Jan 20, 2016
    #41
  2. Jan 20, 2016 at 8:59 AM
    #42
    ThunderOne

    #42
    ThunderOne Well-Known Member

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    For me, my idle seems smoother. The truck has a smoother feel under load as well. Throttle response feels better too, but that's probably just placebo. But who knows... the can says "+4-10HP to the wheels!" I'm guessing it's probably around 4 HP haha
     
    ThunderOne, Jan 20, 2016
    #42
  3. Jan 20, 2016 at 9:56 AM
    #43
    Dirty Pool

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    Dirty Pool FLIES ON THE FRIES, KETCHUPS WATERED DOWN

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    FWIW that bulb is the "intake air temp" sensor, the MAF is up inside the tube.

    The "delicate looking resistors" is the MAF sensor.
     
    Dirty Pool, Jan 20, 2016
    #43
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  4. Jan 20, 2016 at 10:58 AM
    #44
    Dilleytech

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    Dilleytech Well-Known Member

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    Haha hmm well that's good to know!
     
    Dilleytech, Jan 20, 2016
    #44
  5. Jan 20, 2016 at 12:51 PM
    #45
    boostd4

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    boostd4 Member

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    Makes sense to disconnect the battery after cleaning or replacing the MAF to reset the STFT and LTFT values. Probably wouldn't hurt to do this regularly anyway to make sure everything else is working fine.
     
    boostd4, Jan 20, 2016
    #45
  6. Jan 20, 2016 at 1:36 PM
    #46
    johnny3

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    johnny3 Well-Known Member

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    Dang..good to know..Thanks, just thought I cleaned mine,,gotta do it again.
     
    johnny3, Jan 20, 2016
    #46
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  7. Jan 20, 2016 at 1:53 PM
    #47
    ThunderOne

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    ThunderOne Well-Known Member

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    or pull the EFI fuse so you don't have to reset your radio.
     
    ThunderOne, Jan 20, 2016
    #47
  8. Jan 20, 2016 at 3:53 PM
    #48
    Dilleytech

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    Dilleytech Well-Known Member

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    The video on the first page shows the bulb to be the airflow sensors not the resistors... This makes more sense to me as that's where it could read air flow.. Is there anything to back up your point? Just to clarify
     
    Dilleytech, Jan 20, 2016
    #48
  9. Jan 20, 2016 at 4:10 PM
    #49
    Dirty Pool

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    Dirty Pool FLIES ON THE FRIES, KETCHUPS WATERED DOWN

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    The video is wrong, common knowledge. Go back and watch at 2:58. The sensor mentioned in the blue caption box is the MAF sensor. If you need more, consult the factory service manual for drawings.
     
    Dirty Pool, Jan 20, 2016
    #49
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  10. Jan 20, 2016 at 4:16 PM
    #50
    Dilleytech

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    Dilleytech Well-Known Member

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    Gotcha, I missed that.
     
    Dilleytech, Jan 20, 2016
    #50
  11. Jan 20, 2016 at 9:37 PM
    #51
    CodeSeven

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    CodeSeven LOC: 33.781461, -115.867251

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    Know what? I'm sarting to think there's no point to resetting the fuel trims. LTFT recalibrates within minutes or less as you drive. and STFT never saves any values anyways.

    its probably wiser to just keep everything the way it was so you don't have to re run all the monitors which can take 200 miles. relearning the LTFT takes maybe 5.
     
    CodeSeven, Jan 20, 2016
    #51
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  12. Feb 18, 2016 at 12:04 PM
    #52
    RyanL

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    RyanL Well-Known Member

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    Update: 4 months later it's still running well, but there was no improvement to mpg. Still trying to figure out why I'm only averaging 14.1 around town.
     
    RyanL, Feb 18, 2016
    #52
  13. Feb 18, 2016 at 12:33 PM
    #53
    CodeSeven

    #53
    CodeSeven LOC: 33.781461, -115.867251

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    Heavy foot. Heavy truck. lots of air resistance. Changing gears at too high of an rpm. Need engine, transmission, and/or gear oil change. Dont go faster than 70 on the freeways

    And i think 14/17 is suppoed to be what we get
     
    CodeSeven, Feb 18, 2016
    #53
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  14. Feb 18, 2016 at 1:37 PM
    #54
    RyanL

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    Thanks for the tips. For 4 years I got 16.5 on every tank & haven't changed how/where I drive since. About 2 years ago it started dropping. I've flushed the trans, keep the engine oil fresh, rear diff is in good shape too.

    But <70 freeway, now you're asking too much!
     
    RyanL, Feb 18, 2016
    #54
    robertjohnsonjr likes this.
  15. Feb 18, 2016 at 6:52 PM
    #55
    CodeSeven

    #55
    CodeSeven LOC: 33.781461, -115.867251

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    check your ECU readings. make sure that's all running properly
     
    CodeSeven, Feb 18, 2016
    #55
  16. Oct 3, 2016 at 6:48 PM
    #56
    EB Group

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    How does one check their ecu readings?
     
    EB Group, Oct 3, 2016
    #56
  17. Oct 3, 2016 at 7:23 PM
    #57
    CodeSeven

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    CodeSeven LOC: 33.781461, -115.867251

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    get a scanner that displays live data
     
    CodeSeven, Oct 3, 2016
    #57
  18. Oct 3, 2016 at 7:36 PM
    #58
    EB Group

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    Ok, good call. Like an Ultragauge
     
    EB Group, Oct 3, 2016
    #58
  19. Apr 3, 2017 at 5:56 PM
    #59
    VABOWHUNT

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    VABOWHUNT Well-Known Member

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    Well I wish I would have read through this thread before I pulled my MAS and cleaned it and my K&N air filter. Apperntly I really only cleaned the temp bulb.
    I did see the other two resists in the black housing. But they didn't look dirty at all. But I did disconnect the plug from the sensor. I did not disconnect the battery though because I wasn't sure how that would have effected my Bully Dog GT Tuner (possible program reset). Should I pull the EFI fuse before I try to start the truck or am I OK without it?
     
    VABOWHUNT, Apr 3, 2017
    #59
  20. Jun 30, 2017 at 1:08 AM
    #60
    QToTa

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    QToTa New Member

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    thank you to all posting this fix.
    i did it and taco is doing good again.
    i do have to pull the battery terminal to reset the check engine light.
     
    QToTa, Jun 30, 2017
    #60
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