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GEN 2 Throttle Response Issue - Power Cutting Out

Discussion in 'Ford Raptor Maintenance Forum' started by Scott Holcomb, Dec 16, 2019.

Car Parts
  1. smurfslayer

    smurfslayer Be vewwy, vewwy quiet. We’re hunting sasquatch77

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    I was coming home from the gym this morning and will try to describe what happens.

    pre-start and warm up the truck because it’s freakin’ cold out. Truck was only off for about 75 minutes, at operating temp when I got in. Navigate the maze to exit parking lot, get on the main road. I have 2 stop signs in short succession, and am in 4A and have turned off auto-stop. issue 1: stop at first stop sign. advance to 2nd, to turn right, make my complete stop, jump to gas pedal and go. only I don’t go, I sit there for probably 2 tenths, maybe a quarter second, no movement at all. None. Then it takes off issue 2: boost comes on, overwhelms the tires despite being in 4a and ... cut power :mad::mad::mad: <-- here, yes, I was kind of loose in the seat because just like the opening dirt / gravel course at Raptor Assault, when it cuts power for losing traction, it’s a non-subtle action, basically chopping the throttle completely until the computer thinks there’s traction. Not thrown forward, but well... :oops: This is not some simple wheelspin comparison algorithm, once t/c cuts power, it’s basically binary, so there really isn’t a way for the rear to be spinning or rotating faster than the front. There’s way more going on than simple wheel spin comparison logic.

    The initial delay in movement is total; that is, it’s not the turbos spooling, it’s the truck’s computer throwing the middle finger at you in response to you pressing the gas pedal.

    I think issue 1 is just poor throttle by wire programming here, and I’ve observed this from day 1. Issue 2 is me playing fast and loose with my traction budget and going into traction ‘overdraft protection’ so to speak. Issue 1 bugs me and I think is not good. issue 2... well, I suppose I could turn off t/c and see if I am able to fare any better.
     
  2. MTF

    MTF FRF Addict

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    Listen we all know the OEM Ford Tuning sucks ass, it did with the Gen 1 and apparently with the Gen 2 as well.

    Your situation is a little different from what Wraptorboy is describing.
    I've never experience that but I don't have Eco Boost turbos.
    My daughter's 2013 Escape 2.0L Eco Boost Titanium doesn't do any of this, and I've driven it quite a lot.
    I guess it's truck thing with Eco Boost being much heavier and big ass tires and more HP and Torque.
    And trying to do an all around Tune for street and off-roading and altitude.

    Are you running a tune yet? @smurfslayer
     
    Last edited: Jan 23, 2020
  3. smurfslayer

    smurfslayer Be vewwy, vewwy quiet. We’re hunting sasquatch77

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    HOLD UP HOMEY! you’d better be careful what you type about the Jennifer or you will disowned by the tribe! The Vatican has even chimed in proclaiming thou shalt not impugn the quality of the 2010-2014 Ford Raptor.

    you gotta be careful. You can’t even type that stuff in the smallest available font. Not even this one.
    ;)
    no. no tune, only a pedal commander.

    I chimed in on this in the event that -egads, I know this would never happen here on FRF but... just in case we might all be typing past each other, with our out loud keystrokes. Maybe it’s different, but on the chance that any of us might not be accurately articulating the symptoms, maybe we come to an understanding.
     
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  4. MTF

    MTF FRF Addict

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    LOL

    I've seen a couple of post were the pedal doesn't always play nice on the Gen2.
    You could be freaking out the PCM a little if it's set to high, just guessing I never used the pedal commander.
    Nor do I own a jenny
     
  5. GCATX

    GCATX Full Access Member

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    Smurfslayer, my "thrown forward" comment was aimed at wraptorboy, because that's what he claimed.

    When I had the PC, a couple times when I was just cruising, let off the gas for a split second then hammered down, nothing happened, actually losing all pedal input for a second or two, then back to normal. Toward the end of the few months I had the PC, the truck would randomly go into limp mode. I did buy it used, so I threw the PC in the trash. I now have the less expensive Burger version, no issues in probably 6 months. The Burger actually requires you to calibrate the gas pedal travel when it's installed, maybe that is key.
     
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  6. smurfslayer

    smurfslayer Be vewwy, vewwy quiet. We’re hunting sasquatch77

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    Yeah, back when I bought, P/C was all the rage and tunes were vaporware. I discovered the no throttle response issue when the truck was stock. If anything, P/C at least makes eco mode acceptable, though it still jumps to 10th gear way too fast.

    I was just trying to illustrate this -what I believe to be a- throttle by wire oddity.
     
  7. Kuan

    Kuan Full Access Member

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    Has anyone done the pedal reset procedure? That will restore the smoother, linear throttle response through the motion of the pedal. I do not think just draining the battery fixes this, so you will have to follow the relearn procedure which involves key cycles, and moving the pedal.
     

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