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How To: Throttle body cleaning 2005+ V6

Discussion in 'Technical Chat' started by genxer36, May 23, 2010.

  1. Sep 16, 2016 at 4:08 PM
    #361
    JediScout

    JediScout Active Member

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    They did the same to me. I specifically remember torqueing the front diff to it's specified torque as per the guide provided on here. But when I went to take it off it felt like it had 200 lbs. Rather than really mess it up I just opted to pay $85 for them to remove the stuck bolt and get me a new one. But really? $85 for a new plug, and less than 2 quarts of gear oil? Probably took him all of 20 min. Then they offered the induction service for $200. Made it sound all sexy. Going to have to branch out and try my brake lines eventually, and the transmission fluid.
     
  2. Oct 2, 2016 at 4:56 AM
    #362
    geotechkid

    geotechkid Member

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  3. Oct 5, 2016 at 11:03 PM
    #363
    Tacomagirl76

    Tacomagirl76 REG. CABS RULE!

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    Yes, after my throttle body was cleaned the engine had a lot more pep and energy. I did it at 30K first time.
     
  4. Oct 15, 2016 at 1:47 PM
    #364
    rnish

    rnish Well-Known Member

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    MAF Sensor Cleaning Erata

    There is one change I suggest to this threads instructions. To fully clean the MAF; the MAF needs to be pulled from the intake housing. This is because if you leave the MAF in the intake housing, you can only clean (what looks like), the thermistor. The round bulb on the two wires seen below.


    The MAF needs to be pulled so you can spray (clean) the "wires" in the tube. It can only be accessed from the top. See the two silver/gray out of focus wires in the tube.

     
  5. Oct 23, 2016 at 3:55 PM
    #365
    Pilot Mike

    Pilot Mike Well-Known Member

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    Thanks for the write up!

    I thought for sure the MAF would be all kinds of dirty so I was disappointed when I first pulled it and saw the bulb was perfectly clean. Then I turned it over and bam, smudge covering the other half of the bulb!

    The truck has great throttle response now and will spin the tires again without trying. 172k miles, living in the desert and first time cleaning it so you can imagine how sluggish it's been. Feels like it regained 25hp and low end tq.

    If you choose to leave the MAF in and spray inside the housing from the TB side, you may not be able to fully clean the bulb. The dirty side was the air filter side as that's where the air comes in. I'd also recommend getting a new o-ring as mine expanded after cleaning.

    IMG_3136.jpg
    IMG_3140.jpg
    IMG_3141.jpg
     
    Last edited: Oct 23, 2016
    1Shifter likes this.
  6. Oct 27, 2016 at 11:57 AM
    #366
    LOLLY

    LOLLY Well-Known Member

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    I will be doing this tomorrow!
     
    AR15xAR10 likes this.
  7. Oct 28, 2016 at 5:17 PM
    #367
    LOLLY

    LOLLY Well-Known Member

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    The steps were super easy to follow. I completely removed my mass air flow sensor and the throttle body and cleaned them that way. Like other people, my sensor was dirty on one side and clean on the other. I wouldn't be able to get the dirty side without completely removing it. After i was done the truck idled really high. Then the idle would bounce around after a couple miles. By 5 miles everything settled down and the rim was back to normal.

    Before
    20161028_130315.jpg
    20161028_130333.jpg

    20161028_131739.jpg
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    After
    20161028_130545.jpg
    20161028_130559.jpg

    20161028_133219.jpg
    20161028_133230.jpg
     
    Crom and 4WDTrout like this.
  8. Oct 31, 2016 at 12:03 PM
    #368
    ryanbitt

    ryanbitt Well-Known Member

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    Just did this yesterday while changing the oil and spark plugs. I just rolled 150K miles and afterwards it felt a lot better on the throttle response. There was a good amount of black gunk built up on the walls so I will likely do this every 30K miles or so now. Nice write up! Much appreciated!
     
    Crom likes this.
  9. Dec 27, 2016 at 6:30 AM
    #369
    JD'STaco

    JD'STaco JD Was Last Seen: Viewing His Tacoma A Moment Ago.

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  10. Jan 10, 2017 at 8:14 PM
    #370
    mike mudry

    mike mudry Mike in AZ

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    This was the second time cleaning the maf and throttle body using the instructions above. This time, 60k, I removed the maf and it was simple to do. I also partially removed the throttle body, just the four bolts and not all of the tubes, and it was actually easier than leaving it attached. I got it much cleaner than leaving it attached and I torqued the bolts to 10 pounds. Thanks again for your write up...
     
    DrFunker likes this.
  11. Jan 17, 2017 at 12:17 PM
    #371
    clharris1s

    clharris1s New Member

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    2006 trd offroad with 130k miles. I've been having hesitation in low gears and higher than normal idles for a year. I changed to synthetic oil, diff fluids, spark plugs, filters, ran some redline through it with just minor improvement. Just cleaned the MAF and took off the throttle body to clean yesterday. It was really gunked up. After cleaning it's a complete improvement. It feels like I'm driving a brand new truck. I had to call my brother with a 4 runner with 100k miles immediately to tell him to do this. I'm excited to drive my truck again.
     
    Pilot Mike and DrFunker like this.
  12. Jan 17, 2017 at 2:35 PM
    #372
    DrFunker

    DrFunker Zookeeper, Referee, Policymaker, Juggler, Janitor

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    ChadsPride likes this.
    :woot:
     
  13. Jan 17, 2017 at 5:42 PM
    #373
    UncommonLife

    UncommonLife Member

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    Followed everyone's previous directions and cleaned throttle body and MAF sensor. Now I have the confidence to tackle spark plugs tomorrow! Truck maintenance makes me feel warm and fuzzy inside. Truck is running great. Thanks for the clear write-up.
     
  14. Jan 31, 2017 at 8:51 PM
    #374
    HB Taco

    HB Taco Well-Known Member

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    On the to do list now
     
  15. Feb 25, 2017 at 3:23 AM
    #375
    06Tacooo

    06Tacooo Earth Czar

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    Good info and pics. If you're going to take off the TB, get a gasket first in case you need it. Otherwise, you're dead in the water if you tear it. I bet Toyo techs don't take it off. I can reach clear through it and clean it properly, but I have long fingers. :thumbsup:
     
    Last edited: Feb 25, 2017 at 3:33 AM
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