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Thread: 6l90e shifting issues

  1. #1
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    6l90e shifting issues

    I'm new with HP Tuners so please excuse my greenness. I have a 6.0 and 6l90e that i used for a swap. The transmission feels like it is slipping when trying to shift to second. i attached my tune file and two log files to see if anyone can add any knowledge.

    So anyone willing to take a look and provide any insight would be appreciated.







    030324testrun.hpl84elky121023.hptelky transpdrpm 21224.hpl

  2. #2
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    Quote Originally Posted by tomeal View Post
    I'm new with HP Tuners so please excuse my greenness. I have a 6.0 and 6l90e that i used for a swap. The transmission feels like it is slipping when trying to shift to second. i attached my tune file and two log files to see if anyone can add any knowledge.

    So anyone willing to take a look and provide any insight would be appreciated.







    030324testrun.hpl84elky121023.hptelky transpdrpm 21224.hpl
    I can't figure out why it is no commanding the shift, but it is not slipping it simply never commands the 1-2 shift even though your shift scheduling says it should. I am not sharp enough on the programing side to figure it out, but the transmission is doing what it being asked to do by the TCM.
    Robert Moreau
    Technical Sales and Marketing Support Specialist
    TransGo
    2621 Merced Avenue El Monte, CA 91733 USA
    Calibration | Innovation |Performance
    https://transgo.com/our-products/

  3. #3
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    Quote Originally Posted by TransGo Robert View Post
    I can't figure out why it is no commanding the shift, but it is not slipping it simply never commands the 1-2 shift even though your shift scheduling says it should. I am not sharp enough on the programing side to figure it out, but the transmission is doing what it being asked to do by the TCM.
    I should add that this started after the inner kid in me attempted a brake stand just to hear the tires. It was during the first short run after the swap. That is why I thought I might have burnt second gear.

    The one log file will show the transmission in A4. That one holds the gear and doesn't shift. The other log file at one point shows A6. When it's in A6 is when I get a slip or a punch feeling from the transmission. A6 is my drive selection and the A4 is what used to be the manual, or TUTD, selection in the donor vehicle.

  4. #4
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    Quote Originally Posted by tomeal View Post
    I should add that this started after the inner kid in me attempted a brake stand just to hear the tires. It was during the first short run after the swap. That is why I thought I might have burnt second gear.

    The one log file will show the transmission in A4. That one holds the gear and doesn't shift. The other log file at one point shows A6. When it's in A6 is when I get a slip or a punch feeling from the transmission. A6 is my drive selection and the A4 is what used to be the manual, or TUTD, selection in the donor vehicle.
    I am sorry I had looked at only one of your logs. Something is unfortunately wrong in the transmsision, I was wrong. It does command the shifts, but the transmission never upshifts out of frist. No second and at one point it kept trying to go to 4th and still first gear there as well. Something snapped in there, it's going to have to come out. :-(
    Robert Moreau
    Technical Sales and Marketing Support Specialist
    TransGo
    2621 Merced Avenue El Monte, CA 91733 USA
    Calibration | Innovation |Performance
    https://transgo.com/our-products/

  5. #5
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    Quote Originally Posted by TransGo Robert View Post
    I am sorry I had looked at only one of your logs. Something is unfortunately wrong in the transmsision, I was wrong. It does command the shifts, but the transmission never upshifts out of frist. No second and at one point it kept trying to go to 4th and still first gear there as well. Something snapped in there, it's going to have to come out. :-(
    Thank you for taking a look. My gut feeling was the same. Just wanted a second opinion to gain some knowledge on using HP Tuners. The software is useless unless I learn how to decipher all the information that is provided.