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Thread: Urgent - E38 L92 TH350

  1. #1
    Tuner in Training
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    Urgent - E38 L92 TH350

    All,

    Having a sporadic issue losing throttle pedal randomly - it seems to happen around a limiter event.

    Tune2.1PEenabled.hpt

    7.34 good.hpl


    Log file attached - it didnt happen during this pass - pass starts around the 630 mark.

    Cheers,

    -Brennan
    Brennan

    LQ4/NV4500 '71 C20

    507 Cadillac/TH400 '84 C10 - Street/Bracket

    1986 Grand Am L92/Th350 Bracket Car

  2. #2
    Tuner in Training
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    here is a link to more indepth info about the combo

    https://forum.hptuners.com/showthrea...ed-Bracket-Car
    Brennan

    LQ4/NV4500 '71 C20

    507 Cadillac/TH400 '84 C10 - Street/Bracket

    1986 Grand Am L92/Th350 Bracket Car

  3. #3
    Tuner in Training
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    Update - for anyone who has this issue. It ended up being changing the Axis of desired throttle area table from VSS to RPM that caused the issue. I initially thought RPM made more sense but no - it caused an intermittent PO606. Changed it back to VSS and the car worked great and throttle response was the same.

  4. #4
    Tuning Addict edcmat-l1's Avatar
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    This is a perfect example of why you don't change stuff just because you think you should.

    EFI specialist
    Advanced diagnostics, tuning, emissions
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    email=[email protected]

  5. #5
    Tuner in Training
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    Well when you don?t have VSS you would think RPM would be the better choice and that was my logic.