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Thread: 4l60e not locking up with new stall

  1. 06-05-2012 #1
    JOSH13
    JOSH13 is offline
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    4l60e not locking up with new stall

    I am trying to re - tune a friends car that is having trouble locking up. The transmission was rebuilt and the vacuum modulator mod was installed during the rebuild. There were no issues with a stock converter but now that the 2500 stall has been installed it will no longer lock up. I made every change I could think of to the transmission tables that mine and other stalled cars I have tuned needed but no luck .... Is there something that you must do differently to the 4l60e when the vacuum modulator mod is installed ?

    Any ideas or advice would be appreciated.

    Thanks
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  2. 06-05-2012 #2
    flame
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    Can you lock it up with the scanner controls? If not then its in the trans/converter.
    1997 Trans Am WS6 - LS1 swap - TR224 - Pacesetter Longtubes - Yank SS3600
    - 3.42 Moser 12 bolt - Wilwood Brakes - HP Tuners tuned - P1SC-1 Procharger
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  3. 06-05-2012 #3
    JOSH13
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    When I attempt to lock it with the controls it tries to lock but keeps locking and unlocking.
    It will not stay engaged though ....
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  4. 06-24-2012 #4
    PitchblackC3
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    Are you getting any misfire codes?
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