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Cadillac Tech Tips - How to fix it Discussion, How To Clean the Throttle Body in Item Specific Cadillac Discussion; This is a great howto!!! My question is can I still do this to my Yukon with a 5.7L. the ...
  1. #31
    Roswell256's Avatar
    Roswell256 is offline Cadillac Owners Fanatic
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    Re: How To Clean the Throttle Body

    This is a great howto!!!

    My question is can I still do this to my Yukon with a 5.7L. the TB is horizontal (intake air comes from the top and goes down) so any solvent sprayed in will drop straight into the intake. Will this cause problems? Do I have to take my TB all the way off to clean it?

    Thanks
    -Robert-

  2. #32
    Ranger's Avatar
    Ranger is offline Cadillac Owners Member
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    Re: How To Clean the Throttle Body

    Just hold the throttle plate open. No need to remove the TB. If the solvent goes into the manifold (I assume you meant vertical) it may be a little hard to start and will smoke a bit til it all gets burned out. You could also stuff a rag down there to absorb most of it. Just don't forget to remove it.

  3. #33
    N0DIH's Avatar
    N0DIH is offline Cadillac Owners Master
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    Re: How To Clean the Throttle Body

    BEST cleaning is done removed. But you don't have to if you want to do it and make it better. You can get 90% with it on. Just takes some work.

    Lurk on over to FullSizeChevy.com, in the tech section or How To article section should be all you need and a ton more..



    Quote Originally Posted by Roswell256 View Post
    This is a great howto!!!

    My question is can I still do this to my Yukon with a 5.7L. the TB is horizontal (intake air comes from the top and goes down) so any solvent sprayed in will drop straight into the intake. Will this cause problems? Do I have to take my TB all the way off to clean it?

    Thanks
    -Robert-

  4. #34
    FL01SS's Avatar
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    Re: How To Clean the Throttle Body

    Hey great write up! I usually clean my TB every other oil change. It's probably overkill, but I've had a dirty TB stall my vehicle out at stop lights during rush hour before so I alwasy keep it clean now.

    There is one thing though, YOU SHOULD NOT USE CARB CLEANER ON YOUR TB!!! There's a difference between carb cleaner and TB cleaner! TB cleaner won't damage the TB or electrical sensors where A LOT of carb cleaners will (most actually). Carb cleaners are more harsh than TB cleaners! I use and recommend using Valvolines TB/Carb cleaner. It works great and it has a unique spray nozzel that can spray in any direction, which means you can spray up & down and side to side and get erevy bit of the TB without holding the can upside down (which will normally stop a can from spraying!) Here's a pic of the can. You can also clean out your PCV with it too.

  5. #35
    N0DIH's Avatar
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    Re: How To Clean the Throttle Body

    Walmart carb cleaner is HARSH, I mean wicked stuff. Be very very careful with it. It strips carbs down to bare aluminum is seconds. Avoid unless you want that.... All that irridite finish is gone.....

  6. #36
    N-star is offline BAD EMAIL ADDRESS
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    Re: How To Clean the Throttle Body

    You can also buy a bored out (about 3 more mm) TB from ebay every now and then you'll see them for sell, from a guy down in Fl.

    Not a bad deal is something like $150, and you'll get about 10 more hp

  7. #37
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    Re: How To Clean the Throttle Body

    FL01SS good tip about the harshness!

    N-star, would those work with our existing setups?

  8. #38
    LacRider01 is offline Cadillac Owners Member
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    Re: How To Clean the Throttle Body

    Great post i did it and it was soo dirty and grimme. the cars respones so much better now. good look

  9. #39
    MightyMi is offline Cadillac Owners Member
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    Re: How To Clean the Throttle Body

    Excellent post

  10. #40
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    Re: How To Clean the Throttle Body

    Nice! Thanks for the help, will clean mine tomorrow!!

  11. #41
    limoguy is offline Cadillac Owners Fanatic
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    Re: How To Clean the Throttle Body

    I have a 98 Deville with 203k on her. Ranger suggested to try this. THe RPM`s have been sticking lately. She went pretty far w/o ever being cleaned.

  12. #42
    limoguy is offline Cadillac Owners Fanatic
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    Re: How To Clean the Throttle Body

    OK...Just got finished!! THe instructions were perfect. It really made this job easy as pie. There sure was 203K worth of carbon in there to. I had the carb spray, toothbrush and a rag. Sprayed a bit, brushed, wiped. After 20-30 mins, I put it back together. So, far it looks like its back normal. I got my fingers crossed. Thanks again

  13. #43
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    Re: How To Clean the Throttle Body

    Mine has 221,000 kms on the clock and it looked like the EGR tubes at the bottom of the throttle body had never been cleaned out. The tubes were 75% clogged! It runs sooo much smoother now. Thanks so much for this post! Next it's the EGR valve cleaning.

  14. #44
    SL1CK's Avatar
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    Re: How To Clean the Throttle Body

    Dang, I wrote this back when I was in highschool, seems to still be going strong. Will update with better pictures for yall.

  15. #45
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    Submariner409 is offline If it won't run, install a sound system
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    Re: How To Clean the Throttle Body

    SL1CK, Remind people that GM now recommends using products labeled as "throttlebody cleaner" due to the presence of MEK (ketones) in "carb cleaner" which may damage the coatings on throttle and butterfly parts.

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