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Thread: 1999 trans am

  1. 07-30-2023 #1
    trocc4
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    1999 trans am

    Hi, have a problem with a 1999 Trans Am that seems to increase idle when the air condition is turned on. These are the values located in the Engine/Torque Model/ Loss -Ac Compressor vs IAT.

    I used these values from the Repository for a stock 1999 Trans Am and my car ran great until I went WOT. So I think I am on the right track Does anyone know what these values mean, or any ideas.


    68/801 - 90/12.50-111/15.10-133/17.25-154/18.81-176/19.86-198/20.45-219/20.94-241/21.33-262/21.62-284/21.82
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  2. 07-30-2023 #2
    RDF1
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    Post the tune instead of some numbers.
    You will get much more help
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  3. 07-30-2023 #3
    trocc4
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    1999 Trans Am

    Here is the tune, thank you
    Attached Files Attached Files
    • File Type: hpt 2.hpt (220.9 KB, 11 views)
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  4. 08-01-2023 #4
    SiriusC1024
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    See what happens when Spark>Advance>AC Bump Tq Spark is disabled.
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  5. 08-02-2023 #5
    trocc4
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    Hey thanks, that worked. It was surging but it eventually learned and its good to go
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