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Throttle body carbon cleaning

Discussion in '2.5 Gen Tundras (2014-2021)' started by Rockslide, Jan 24, 2023.

  1. Jan 24, 2023 at 5:29 PM
    #1
    Rockslide

    Rockslide [OP] New Member

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    I like to be proactive and fix things before they fail. Like cleaning carbon build up on the AIR flow components. Does anybody have any HOW TO info on this?
     
  2. Jan 24, 2023 at 7:21 PM
    #2
    1UP

    1UP Truck Gang

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  3. Jan 24, 2023 at 7:36 PM
    #3
    2mchfun

    2mchfun Lead foot, left lane, loud stereo

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    Access or buy a service manual and follow the steps for removal, clean, follow steps to install. I use a paper Haynes manual when I have questions. You can likely find a YouTube video as well if you want to go with that option.
     
  4. Jan 24, 2023 at 7:36 PM
    #4
    2mchfun

    2mchfun Lead foot, left lane, loud stereo

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    BTW welcome to the forum from OKC!
     
  5. Jan 25, 2023 at 7:02 AM
    #5
    Rockslide

    Rockslide [OP] New Member

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    I'm also LAZY like most people. The main thing is that I don't do the WRONG thing. I figure lots of people has already done this so that's why I ask. Did/do carbon cleaning on my 97 f150 4.6 with great results so I know how fouled it can get in there.
     
  6. Jan 25, 2023 at 7:09 AM
    #6
    Taco-Spike

    Taco-Spike From Tacoma World. Fueled by bacon & bourbon

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    Can also find some YouTube videos.

    Pretty simple job. I always hit the MAFS with some cleaner while I'm there.
     
  7. Jan 25, 2023 at 7:20 AM
    #7
    Stingray650

    Stingray650 New Member

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    I just did this last month, I was convinced my battery was crapping out or something because my truck kept stalling at idle. Going down the road everything was peachy, but as soon as I stopped at a signal it would die. I came across a YouTube video where a Tundra owner was describing the same exact problem and he said it was the throttle body. Sure enough. I pulled it off and the carbon buildup was pretty nasty. I went ahead and cleaned the whole air intake and MAF sensor, now it's running like a champ again. Plus I looked competent in front of my wife, which is always good.
     
    bulldog93 and Taco-Spike like this.
  8. Jan 25, 2023 at 7:50 AM
    #8
    Taco-Spike

    Taco-Spike From Tacoma World. Fueled by bacon & bourbon

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    :rofl::fistbump:
     
    Stingray650[QUOTED] likes this.
  9. Jan 25, 2023 at 8:21 AM
    #9
    Rockslide

    Rockslide [OP] New Member

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    Is it true that your not supposed to ROTATE the throttle flap or you will jack up the timing of the TB?
    Also do you need to unhook the battery?
    Again I have a 2016
    Could not find a YouTube vid for my 2016.
    I search YouTube for EVERYTHING.
     
    Stingray650[QUOTED] likes this.
  10. Jan 25, 2023 at 8:26 AM
    #10
    Taco-Spike

    Taco-Spike From Tacoma World. Fueled by bacon & bourbon

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  11. Jan 25, 2023 at 8:37 AM
    #11
    Stingray650

    Stingray650 New Member

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    I disconnected the battery. I took off the whole intake assembly and wiped it all clean inside, disconnected the electrical from the throttle body and removed the whole thing to clean it (I found it hard to do a very good job with it still in place). Yes, I rotated it by hand as I cleaned it and got the edges with a wire brush and carb cleaner. I also got a bottle of electrical contact cleaner and cleaned all the contacts before re-assembly. The idle is always a little high at first when I disconnect the MAF sensor but within a few minutes it went right back down and it's been running great since.
     
    Taco-Spike, Rocko9999 and bulldog93 like this.
  12. Jan 25, 2023 at 3:09 PM
    #12
    Rockslide

    Rockslide [OP] New Member

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    Is there a TB manifold to clean as well?
    How many miles was on your truck and did you find ANY ports blocked?
     
    Jaydog likes this.
  13. Jan 25, 2023 at 3:33 PM
    #13
    2mchfun

    2mchfun Lead foot, left lane, loud stereo

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    If you bought your truck used, the throttle body coolant bypass mod may have been done which would alter the steps to remove and install.
     
  14. Jan 25, 2023 at 3:51 PM
    #14
    Rockslide

    Rockslide [OP] New Member

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    I did buy it used and there was lots of mods done like 3" lift, larger tires, exhaust, air filter.
    What would I look for to verify if this mod was done?
    Does it make it a more difficult job to clean the carbon?
     
  15. Jan 25, 2023 at 3:54 PM
    #15
    1UP

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    2mchfun likes this.
  16. Jan 25, 2023 at 4:02 PM
    #16
    2mchfun

    2mchfun Lead foot, left lane, loud stereo

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    There would likely be a coolant in and a coolant out port plugged off by use of some sort of plugs or caps. Might have hose stubs plugged or capped attached to it. Or else just two open holes that you would likely otherwise wonder about.
     
  17. Jan 25, 2023 at 6:11 PM
    #17
    Rockslide

    Rockslide [OP] New Member

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    Yea,
    Yea, I saw that and thanks.
    I should be able to see if this mod was done or not when in there.
    I guess I'm trying to compare my 97 f150 4.6 triton CARBON cleaning to the tundra (which I have not done yet).
    F150....T.B. , tb MANIFOLD (which really gets blocked with carbon) and egr valve. I do this about every 50k/75k miles with zero problems.
    At 456k miles my f150 has NEVER left me stranded. Hoping for the same on the tundra.
     

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