Results 1 to 3 of 3

Thread: throttle body throws p2104 - p2111 - not a bad TB - looking for ideas

  1. #1
    Potential Tuner
    Join Date
    Nov 2016
    Posts
    4

    2006 Mustang GT 'Boss' throttle body throws p2104 - p2111 - not a bad TB - any ideas

    Hi All,

    New to HP Tuners, just moved over from SCT.

    I have a twin turbo build, air-water, blow-thru.

    Pertinent Info

    2006 Mustang GT
    stock computer
    stroked 4.6 to 5.0
    90mm Ford Racing Boss Coyote TB - (Accufab built, uses same TAC and TPS as 4.6 version confirmed with John)
    4" inlet tube
    BA5000 MAF

    The issue I am having occurs when I go WOT for a certain amount of time. It throws a 'wrench' with a pending 2104/2111 code.

    Right before this happens the throttle hangs and then it is non-responsive. If I try to drive it again, even with the wrench gone, the throttle starts to hang and throws a wrench again.

    If I reload tune I can drive it around town, but it will happen WOT again every time. It can recreate the issue.

    If I watch the throttle blade move when the pedal is depressed, there is still pedal travel after the throttle blade is fully open. I am guessing that has to do with the 'Pedal POS WOT Start" (at 175) setting?

    The car is pushing about 80lbs/min at the current boost limit of 14 lbs.

    My guess is that there is data that is not working together between the pedal, tb and maybe air flow.

    I am looking for suggestions on where to start to try and sort this out.

    What should I datalog?

    What tables should I be working with?

    The car runs well other than the TB issue on WOT.

    One other thing to add is that I can not hold an rpm under 2500 rpms in neutral. I am guessing ETC Effective Area vs Throttle Angle vs Vacuum is wrong for this bigger tb.

    hanging_throttle_with_p2104andp2111.hplcurrent_tune.hpt Thanks!
    Attached Files Attached Files
    Last edited by sajecw; 11-03-2016 at 11:44 PM.

  2. #2
    Potential Tuner
    Join Date
    Nov 2016
    Posts
    4
    This is the log of our first 1st gear to 3rd gear pull we made. Then it threw the wrench...

    1stto3rd_throttle_code.hpl

  3. #3
    Potential Tuner
    Join Date
    Nov 2016
    Posts
    4
    Turns out that it was not the TPS. P2104 and P2111 came back after driving for 15 miles. back to the drawing board...
    XXXXXXX


    This might help people going forward.

    I tried everything to 'tune out' the issue.

    I found out how to figure out throttle area on this forum and I rescalled the throttle.

    Turns out the brand new Ford racing Boss 90mm throttle body had a bad TPS.

    I swapped in a new TPS and I am back in business to finish tuning this build.
    Last edited by sajecw; 11-08-2016 at 04:29 PM.