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Thread: 3.91 rear gear swab then gear not shifting ?

  1. #1

    3.91 rear gear swab then gear not shifting ?

    hi there
    i just swabbed my 300c stock diff to a 3.91 lsd complete set and an drive well but when i go first then second then third gear then the gear shift up to 2 and stand there nothing works , even manual shifting dont go and when i stop the car it shut down by it self from the gear lagging ,,
    i changed the ratio from the scanner and did reset of the gear readings ( didnt solve it )
    did change from the diablo ( also not working )
    any thing missed here ? should i do battery of and on or what ?
    note : abs light is on
    plz help >
    Last edited by GeForce1986; 12-10-2018 at 05:02 AM.

  2. #2
    any help ?

  3. #3
    up up

  4. #4
    Potential Tuner
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    should bouGHT A CHEVY, MPH AND RPM ON A DODGE? i really dont know..

  5. #5
    Advanced Tuner coanan's Avatar
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    Mar 2009
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    S. Florida
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    What was the out come??
    2018 Trackhawk PCM/TCM tune by Dusterhoff.
    Flex Fuel, MMX faux 95mm TB, GripTec 2.85, 10% ATI lower, FIC1200, ARH 1 7/8 w/cats, 180 T-stat

    13 Chrysler 300S, RAM BGE 412 stroker, cam motion 232/246 619/619 118 +4, ATI 18% OD pulley
    Whipple Gen5 3.0, 2.50 upper pulley, Smooth Boost controller, FIC 1200 inj. Nick W 108mm TB, FORE dual return fuel system, E85, FTI 2800 stall(SRT83380), SHR WAR Viking trans and valve body, Getrag 3.73, 1 7/8 kooks w/hi-flow cats, 3" Magnaflow Cat-back 943rwhp

  6. #6
    Advanced Tuner
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    FYI there is a thread about changing gears specific to dodge here, although the software version is 3.0.

    https://forum.hptuners.com/showthrea...nt-3-0-Scanner

    Some more info on EGS52/EGS53 TCMs (2006 - 2014 Chrysler 300/300C)
    https://forum.hptuners.com/showthrea...e!-EGS52-EGS53

  7. #7
    Potential Tuner
    Join Date
    Dec 2018
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    Did you make sure you cleared your DTCs with the scanner after updating with Diablo? The scanner would not update things correctly so I used Diablo T1000 to set the tire size and gear ration and cleared the DTCs with HPTuners Scanner and it worked.

  8. #8
    Just had a similar issue myself. If I am correct you will have an incorrect gear ratio code?

  9. #9
    i did fix this by changing the ratio from the scanner .