Engine studder and thottle lag anyone else having this issue

  1. jeepthang

    jeepthang Active Member

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    I agree. I suppose we are some of the unlucky few that is dealing with this. Of coarse the issue could "not be replicated" at my previous three appointments...
     
  2. Jeepcity

    Jeepcity Well-Known Member

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    At operating temp ,in neutral, i can slowly press on throttle peddle and it will jump from 600 to 1200 rpm . I cannot get it to stay at any rpm between those two numbers. The same on the way down .Curious what other people find.
     
  3. Litfuse

    Litfuse Well-Known Member

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    I don’t think we are the unlucky few. I think we are the ones that notice it. The dealer can’t replicate anything because it is operating as designed. The problem is, the design sucks.
     
  4. Z J West

    Z J West Well-Known Member

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    1) Insert ignition key and turn to "ON" (not start).
    2) Wait for all idiot lights to go out. Check Engine Light may remain on.
    3) Slowly depress the accelerator pedal all the way to the floor.
    (HOLD to the floor for about a three second count.)
    (On some PCM versions, Check Engine light (CEL) may start flashing here)
    4) Slowly release the accelerator pedal until it's all the way back up.
    5) Turn the ignition key to "OFF".
    6) Start the engine.

    or this, basically the same procedure.

     
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  5. LunchBoxFab

    LunchBoxFab Active Member

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    this is exactly my problem as well. I have not been able to re-produce in neutral, but under load, it will most definitely lug and jump, lug and jump back up. like a very poorly tuned PID loop.

    not quite sure what to do here

    id like to add here that i added an iDrive pedal tuner module, and it did not help this situation. it makes the jeep more responsive, so youre out of that dead band earlier and easier, but the weird lugging is definitely still there.
     
  6. Litfuse

    Litfuse Well-Known Member

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    I appreciate you sharing your experience. The oem tune upsets me as well and I was thinking about getting a pedal commander. I knew it would not correct the situation with the hesitation, but at least mask it. If you were to do it all over again, would you still by the idrive? I’m on the fence about getting a throttle calibration device. Don’t want to waste the money.
     
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  7. LunchBoxFab

    LunchBoxFab Active Member

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    I only have 20 miles on it, so I can’t tell you it’s worthless yet, but it definitely didn’t fix the surging/lugging I bought it to attempt to fix. It does even out the acceleration well. I’ll try to report back if I keep it.
     
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