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Making the throttle reliable...and how quickly can you kill a TPS?

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    #46
    EML at VIR on 6/15. Same operating condition as Summit. Coming out of the grid - first WOT.

    Between Summit and VIR:
    - I chose not to change out the Aug 2024 TPS on top. Too stubborn to accept it could simply be another failed TPS. But I did order a new one to have on hand.

    - I rebuilt the connector for the top TPS after magnified images confirmed the female pins were likely a bit looser than new. Test drove a heat soaked engine, replicated the operating condition and the car failed that test. EML

    - Sent my ITBs off for cleaning; the tech found a badly sticking #3. So I decided that was a most probable cause, and the sensor was actually doin its job

    -I swapped out the entire throttle body assembly with a used set in good condition that I meticulously cleaned prior to install.

    - the car passed a road test so I still didn’t change the TPS.

    Two days ago the car went 5 sessions at VIR. I thought we were good. Then, Ben came back into the pits right after grid with an EML. I dropped in the old TPS, the original one from the original actuator I took out in 2024. Another long session. Probably 15 laps.

    No EML.

    Is it really possible that these EML codes are simply from failing Genuine BMW TPS (from FCP)?

    I should test the wires. Anyone know which pins at the DME connector?

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