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Thread: Mk4 GTI Throttle body doesn't know what it's doing

  1. #11
    Join Date
    Aug 2013
    Location
    Australia
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    Users Country Flag Thread Starter

    Disconnected the power steering switch and it now doesn't die down to 500rpm after I floor it! Still has the %5 throttle jumpy-ness which occasionally comes into play when letting off accelerator; but I am hoping it will now adapt properly.
    If it doesn't, any other ideas as to what sensors or anything else that could be buggered, stopping the throttle body from adapting? Only ever goes jolty at %5 throttle. Never any other amount of throttle.

    It idles at a consistant (compared to when it fluctuated) 1850rpm while moving though and at 950rpm (much better idle, also not fluctuating) when not moving.
    I'm guessing every sensor on this engine is buggered or something? haha
    Last edited by Malk234; 18-08-2014 at 02:55 AM.

  2. #12
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    Aug 2013
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    Australia
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    Users Country Flag Thread Starter
    IAT sensor maybe?

  3. #13
    Join Date
    Aug 2007
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    Dont poke and hope, scan, smoke and scope
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    Na mate it will still adapt even if the IAT is disconnected. Have you tried the throttle yet?? good to hear the power steer switch helped, more trouble than they are worth
    Cheers
    Jmac
    Alba European
    Service, Diagnostics and repairs. Mobile Diag available on request
    Audi/VW/Porsche Factory trained tech 25+ yrs exp
    For people who value experience call 0423965341

  4. #14
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    Jan 2014
    Location
    Newcastle
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    32
    coolant sensor? new one did wonders for my car...

  5. #15
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    Aug 2011
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    Quote Originally Posted by Malk234 View Post
    Disconnected the power steering switch and it now doesn't die down to 500rpm after I floor it! Still has the %5 throttle jumpy-ness which occasionally comes into play when letting off accelerator; but I am hoping it will now adapt properly.
    If it doesn't, any other ideas as to what sensors or anything else that could be buggered, stopping the throttle body from adapting? Only ever goes jolty at %5 throttle. Never any other amount of throttle.

    It idles at a consistant (compared to when it fluctuated) 1850rpm while moving though and at 950rpm (much better idle, also not fluctuating) when not moving.
    I'm guessing every sensor on this engine is buggered or something? haha
    Cool, i get the same symptoms occasionally. Ill do this as well. Cheers JMAC !
    '02 GTI (clicky) - REFLEX SILVER - VIEZU race tune. VAR design 2.5inch stainless steel dump pipe with 100cell cat into 2.5" billyboat stainless cat back, Forge TIP, N75, Audi DV, ghetto CAI, FK-AK s coilovers, tunerdone LEDs, Clarion CZ301E sound stage.

  6. #16
    Join Date
    Aug 2013
    Location
    Australia
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    Users Country Flag Thread Starter
    Just as an update, it's doing it again now.
    Drops down to 600rpm after high boost and WAY more jolty, even compared to before I took the power steering switch off.

    It has a brand new coolant sensor (first thing I tried) and it cannot adapt any throttle body. Took it to Volkwerk and had a go with a brand new throttle body - with the same results.
    Gets to about %30 open and comes up with an error on ross-tech (and yes we used the right block ). It does it with any throttle body.
    Last edited by Malk234; 19-08-2014 at 09:15 PM.

  7. #17
    Join Date
    Aug 2013
    Location
    Australia
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    14
    Users Country Flag Thread Starter
    Not selling it anymore.
    Taking it to volkwerk so they can fix it for me haha

    Will update once/if the problem is found

  8. #18
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    Aug 2013
    Location
    Australia
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    Users Country Flag Thread Starter

    It was the ECU making all the problems

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