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Thread: Sticking TB

  1. #1
    turbo addict
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    Sticking TB

    Has anyone had a problem with the TB sticking at idle position after an engine holdback/high vacuum condition?

  2. #2
    Garrett booster
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    Re: Sticking TB

    Never had a 2.4 but on my 3.0l the butterfly sticks in the bore if the idle screw is set too low. Maybe your idle screw is worn/misadjusted try turning it clockwise slighty.

  3. #3
    Supporting Member Turbo Mopar Contributor jonnymopar's Avatar
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    Re: Sticking TB

    Currently have that problem. Strange thing is that it comes and goes. It's very slight, but if it happens in traffic it's pretty annoying.
    Jon J.

    1989 Daytona ES 2.4L DOHC
    2003 Neon SXT - gone but never forgotten

    If it ain't broke, fix it 'till it is!

  4. #4
    turbo addict
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    Re: Sticking TB

    I find that use the adjustment screw and crack the throttle plate open just a little helps the throttle body unstuck.

  5. #5
    Garrett booster
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    Re: Sticking TB

    Exactly. Maybe I wasn't clear in my post above but by "idle screw" I meant the throttle stop screw. There is a plug covering it. I use a wood screw to get the plug out. Use a hammer to get the wood screw to poke through the plug, then screw it in with a screwdriver until it pops out. You can then use a screwdriver to adjust the idle/throttle stop screw until the butterfly stops sticking.

  6. #6
    The moderately moderate moderator Turbo Mopar Staff
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    Re: Sticking TB

    Also, have you cleaned the TB lately? This helps in many cases.
    Bryan
    86 GLHS #161, 2016 Impala
    SDAC National Member, SDAC Buckeye Chapter Member

    A man has got to know his limitations.....

  7. #7
    turbo addict
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    Re: Sticking TB

    Quote Originally Posted by jonnymopar View Post
    Currently have that problem. Strange thing is that it comes and goes. It's very slight, but if it happens in traffic it's pretty annoying.
    I've noticed the TB seems to stick worse after a high rpm gear hold back which creates a very high vaccum situation! I really can't complain, this has been a VERY dependable vehicle (+200K miles)

  8. #8
    turbo addict
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    Re: Sticking TB

    I more concerned with a light throttle stutter/missing problem that the car has right now! I have noticed it is more apparent after the engine reaches operating temp!

  9. #9
    turbo addict
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    Re: Sticking TB

    On the misfire problem, a code FINALLY decided to set (P0301) What is puzzling me is, the misfire happens more so with little to no boost and at part throttle!

  10. #10
    turbo addict
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    Re: Sticking TB

    I did notice when I replaced the spark plugs not too long ago that there was some oil in the #1 spark plug galley. I wonder if the valve cover seal for the #1 plug leaking some oil might be a cause for a misfire? Hmmmmm!

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