Thread: How to clean your throttle body.

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  1. #1 How to clean your throttle body. 
    Donating Users Taz Magister's Avatar
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    Items Needed To Perform Said Task:
    Basic Tools
    Rags/Paper Towels
    Throttle Body Cleaner “Brake cleaner, or Carb Cleaner works too. If you have to any degreaser will get the job done. I used CBC Carb cleaner and it worked very well.”
    New Gasket “Unless you got a spacer/block off plate type deal or have recently replaced it. If that’s you I doubt you need this write up. I thought I could get away without a new gasket but when I got it off I saw that the coolant had already been getting past it, and then I had to use RTV until I got a new gasket. So don’t risk it.”
    10-20 Minutes

    Step1: Disconnect all the sensors and move their wires aside.




    Step2: Remove your intake. If you have a box just remove the tubing.

    Step3: Disconnect the throttle cables. The outer most one simply pushes off with your thumb.



    To remove the inner most one first pull the cable out of its channel like so.



    Then place your finger under the cable and push it towards the other side of the car while you pretend you’re a ricer in the school parking lot trying to be cool revving your engine by hand.





    Step4: Remove the cables bracket.





    Step5: Remove the throttle body bracket. I do believe the L67s don’t have this so if that’s you go to the next step. Now for the people who do have to deal with this pita. It is held in place by two 8MM bolts one is pretty easy to get to. The other is behind the bracket and can’t really be seen but it’s there I promise.



    The only way to get it out is to go under the crossover pipe with a wrench and make a bunch of small turns. You don’t have to get it all the way out, just lose.

    After years of intense research and debate bluegtp91 and I have reached the conclusion that the best way to reinstall this bracket is by throwing it in a trashcan.

    Step6: Now we can finally pull the Throttle Body off. Before you start, I would suggest putting some rags under it over the crossover and Trans because you will get a little coolant.

    Start removing the three 10mm bolts that hold the Throttle Body to the U.I.M. Here are their locations.








    Step7: Pull the Throttle Body off. Then remove the screen a dental pick makes easy work of this just pull the retainer together and then out.



    Then gently pop the screen out.

    Step8: remove the MAF sensor with a torxs bit I believe It’s a T-30 but I’m not certain.


    Step9: Start cleaning, I think that parts pretty self explanatory. Don’t forget to clean up the gasket area before reinstalling.








    Step10: Put it all back together. Start it up and check for leaks if there aren’t any “yay you did it” if there are you need to fix them.
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  2. #2 Re: How to clean your throttle body. 
    Donating Users Taz Magister's Avatar
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    really no replies?
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  3. #3 Re: How to clean your throttle body. 
    The Mod Monkey Mad Monkey's Avatar
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    Looks great, i love the Thumb drawing lol

    Next do a L26 one lol
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  4. #4 Re: How to clean your throttle body. 
    Donating Users Taz Magister's Avatar
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    Quote Originally Posted by Mad Monkey View Post
    Looks great, i love the Thumb drawing lol

    Next do a L26 one lol
    I do have one with 120k on it sitting in the driveway... hmmmm
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  5. #5 Re: How to clean your throttle body. 
    The Mod Monkey Mad Monkey's Avatar
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    becuase i tried to clean mine using the long brush trick, but damn if i only got the butterfly clean and some area around the inlet, need to pop that baby off to get at her..

    If its a L26 NA that would be key
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  6. #6 Re: How to clean your throttle body. 
    Donating Users Taz Magister's Avatar
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    I'll update it next week with an l26 one but I would assume its mostly the same
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  7. #7 Re: How to clean your throttle body. 
    The Mod Monkey Mad Monkey's Avatar
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    throttle by wire not cable.. make a decent diff to the plans
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  8. #8 Re: How to clean your throttle body. 
    SE Level Member nault31's Avatar
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    Nice job with the pics and use of paint.

    Has there been a consensus on the screen? I've heard conflicting views on whether removing it messes with airflow but I assume it would be a negligable difference.

    ^^I realize a stock L36 is not as fast as the sticker implies, but this sticker has worked and it is still a hell of a lot of fun to drive considering it's a grocery sedan.
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  9. #9 Re: How to clean your throttle body. 
    Donating Users Taz Magister's Avatar
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    I'm not sure I put mine back in
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  10. #10 Re: How to clean your throttle body. 
    GTP Level Member chevyy1212's Avatar
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    Is popping the throttle cables off 100% needed? Either way nice whitup the pictures help us slower ones.
    1998 GS with Open cone, PLOG, ZZP Catless DP, tune & Intense MPS 3.6. Pulls good enough to make the woman smack me and call me a D!*k.
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  11. #11 Re: How to clean your throttle body. 
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    Quote Originally Posted by chevyy1212 View Post
    Is popping the throttle cables off 100% needed? Either way nice whitup the pictures help us slower ones.
    no it's not but I find it's easier to clean with it completly off the car. I'm very picky when it comes to cleaning stuff on my car so I just do what ever it takes to get the results I want. But it only takes like 3 seconds to take the cables off.
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  12. #12 Re: How to clean your throttle body. 
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  13. #13 Re: How to clean your throttle body. 
    GTP Level Member chevyy1212's Avatar
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    The gasket I got (felpro) has that orange area on a plastic gasket? Looks like it should do the job right just different than what I see here
    1998 GS with Open cone, PLOG, ZZP Catless DP, tune & Intense MPS 3.6. Pulls good enough to make the woman smack me and call me a D!*k.
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  14. #14 Re: How to clean your throttle body. 
    Donating Users Taz Magister's Avatar
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    yea it should
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  15. #15 Re: How to clean your throttle body. 
    GT Level Member popeyenate's Avatar
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    very awesome writeup. great info!!
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  16. #16 Re: How to clean your throttle body. 
    SE Level Member popnajera's Avatar
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    i bet mine is gross, def something else i'll need to get on, good write up!
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  17. #17 Re: How to clean your throttle body. 
    Turbo is the way to go. BillBoost37's Avatar
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    FWIW you don't need to take the throttle cable bracket off. That's two extra bolts.
    I drink..so consider that when reading my posts.

    2010 Audi A6 Dual IC's
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  18. #18 Re: How to clean your throttle body. 
    Donating Users Taz Magister's Avatar
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    He's right
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  19. #19 Re: How to clean your throttle body. 
    Perma-Banned! JK LOL Explicit_Spade's Avatar
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    04+ Guys, be careful of the crossover if your car is hot when you go to do this. I was disassembling my MAF from my intake hose earlier and my knuckle touched the crossover. My skin sounded like bacon in a frying pan.
    Quote Originally Posted by W-Body Store
    Remember, GM engineers didn't take into account your need for speed.
    Daily Driver: 06 Grand Prix GT / 9.4:1 CR / IS3 Heads / Ported Gen V / ZZP Headers / HPT Pro / Pulleys: 4.25, 3.8, 3.5, 3.4, 3.2, 3.0, 2.9, 2.7
    Projects: 86 Monte Carlo SS / 98 Sonoma / 74 Honda CB750
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  20. #20 Re: How to clean your throttle body. 
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    I like it.

    You have a hairy finger though. lol
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