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8th gear slip

Discussion in 'Ford Raptor Engine Discussion and Performance Mods' started by Biggwrm, Jun 12, 2019.

  1. Biggwrm

    Biggwrm Member

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    Anyone notice a slip when shifting from 7-8?

    I realize this is the first overdrive gear. But I notice the Rpms rise during the shift.

    Torque converter or lockup? This normal?
     
  2. GCATX

    GCATX Full Access Member

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    Mine does this. I took it in and they updated the TCM and it seemed better for a while, only to return. I have the tach on video when it happens. Also slams into 5th gear when using sport mode, not all the time, but frequently.

    I will probably take it back to the dealer if it really starts bugging me again. I am thinking there are some bad parts inside the tranny.
     
  3. Biggwrm

    Biggwrm Member

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    Well crap, doesnt sound promising. Guess should hold off on the tuner.
     
  4. GCATX

    GCATX Full Access Member

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    Curious, how does yours shift when you put it in sport mode?
     
  5. Biggwrm

    Biggwrm Member

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    Honestly I have never put mine in sport. I baby her. California traffic and all.

    Drove the shit out of the Assault truck tho. Lol

    Ill try this weekend and see if it changes it.
     
  6. muhockey2003

    muhockey2003 Member

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    Mine shifted from 7th gear to 1st! Scared me like crazy! I have a tune on it...brought it back to JDM in NJ and they had to remove the tune...update the software from Ford and then put my tune back on. Its been about 2 weeks but so far so good and smoother.
     
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  7. Ray Knight

    Ray Knight Full Access Member

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    My 19 slips in all gears and jams in and out too. 3rd transmission before the first oil change! Trading it in for a Roush F250 with the powerstroke and 6 speed. The 10 speed has been a nightmare on this truck for me. My 2017 had zero transmission issues except the occasional clunk at slow speeds.
     
  8. WraptorBoy

    WraptorBoy Member

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    I'm not sure what you mean by slip but the 10 speed is ECT. It's controlled by the computer. It is designed to skip gears, as needed, up and down. E.g., If you're in sport mode and floor it, depending on a billion conditions, the trans could start in 1 and skip to 3 or 4 as needed. If you come to a sudden stop, it may skip from 9 to 1 or 2 etc. If you drive it super gently, you will likely see every gear hit. And by skip I mean a seamless transition to other gears. It shouldn't be slamming or jerky (though sport mode in any trans with a large number of gears have always seemed jerky to me). Also, the manual states that the trans could be a little harsh in the first 1000 miles and while it's learning. Just FYI... hope this helps.
     
  9. GCATX

    GCATX Full Access Member

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    No, he means it feels like it slips, just as he wrote. Has nothing to do with skipping gears. The engine will rev slightly between 7th and 8th gear, at steady throttle. I have been curious about this as well, hopefully we can keep this on track to see if anyone else has the issue.
     
    Last edited: Jun 15, 2019
  10. BIG TIME BALLER

    BIG TIME BALLER Full Access Member

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    I’ve got slip in 3rd gear.
     

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