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Raptor broke down again!

Discussion in 'Ford F-150 Raptor General Discussions [GEN 2]' started by TurboTJ, Jan 24, 2020.

  1. Johnkn

    Johnkn Full Access Member

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    Wimbledon white with blue stripes. Original Paxton supercharger.
     
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  2. ME120

    ME120 Full Access Member

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    Impressive. Such a great mustang ! Do you have a 2015-2020 Shelby ?
     
  3. TurboTJ

    TurboTJ Full Access Member

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    I am not a lawyer but I don’t believe there is any liability here. Leaving one stranded on the side of the road or idling in limp mode at 10MPH comes with more liability.

    That’s pretty much how I’m feeling.. And this is not the first issue. The computers have freaked out and left me stranded twice when the car would not start.

    can anyone confirm a PCM update is even available? It’s sounding more and more like all they did was a reset.

    Thanks for all the feedback (almost) everyone!

    Thank you for your well articulated and constructive feed back. I wish I could watch YouTube videos and become an expert. Who needs engineering school anyways??

    However, the video is good and this guy doesn’t even touch on some of the more harmful aspects of low RPM bogging of engines. However, you can feel when an engine is bogged and this was not the situation I was in. Data logging has shown zero pre ignition or engine knock and 10PSI of boost at over 2k rpms should be fine. As engineers, we design for this.

    I checked the dash cam and it looks like I accelerated from 78 to 85 over a decent amount of time before things go south. I highly doubt this causes a bogging situation. It’s simply a case where the tranny would have likely downshifted to 9.

    For the sake of argument, let’s say that an issue exist on the Ecoboost with LSPI. I would expect Ford to correct this (and maybe they did) with a change of oil type, a reduction of boost at that specific RPM band, enriched fuel conditions, decreased throttle opening angle and maybe decreased timing. Problem solved! There are lots of knobs to turn besides failing.

    Oorrrr you can just say, at 10PSI of boost at >2k RPM’s, Fords are allowed to break down. That’s cool too.
     
  4. jabroni619

    jabroni619 FRF Addict

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    I don't think Ford is accounting for people who have no idea how to drive. Like hard acceleration in M10. No articulation beyond retarded is necessary, because that's exactly what it is. There's a reason why you were asked why, and you didn't really have an answer. Because it's dumb, and you can't justify dumb.
     
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  5. BigDawg

    BigDawg Member

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    And then the internet tough guys chime in...
     
  6. TurboTJ

    TurboTJ Full Access Member

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    Let’s say you’re right and I’m dumb. How much throttle is it ok to apply at 78MPH in M10? What RPMs would I be at? Would you expect the powertrain to fail? Would you expect to register knock?

    I hear what you’re getting at and I’m certainly open to it but the facts don’t support your theory.
     
    Last edited: Jan 26, 2020
  7. jabroni619

    jabroni619 FRF Addict

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    Your idea of tough is a strange one

    If I was in manual and wanted hard acceleration I would drop to the lowest gear I could and row through them until I got to my desired speed. Or I'd leave it in Drive put it in sport and let the vehicle do the work for me. I don't know when anything will fail because I don't know the tolerances, but I do know 10th gear isn't intended for hard acceleration. That's enough for most people to not do it. I'm fairly certain that no engineer at Ford or GM (who also uses this transmission) would say that 10th gear is designed for hard acceleration.
     
  8. TurboTJ

    TurboTJ Full Access Member

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    Maybe “hard” is the wrong word. I am saying that I am accelerating hard enough that the tranny would normally downshift to 9th had it not been in manual. I prefer to accelerate slower and avoid the downshift which is next to impossible in manual mode. I would guess I was about at 25% throttle and 10PSI boost. RPM’s are likely near 2400RPMs.


    Just a thought - maybe I can post the dash cam video and we can all decide for ourselves whether or not the engine was bogged and avoid all this conjecture.
     
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  9. BigDawg

    BigDawg Member

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    That would be folks saying things online that they’d never say to the persons face You’d get your 12 year old ass beat where I come from Why don’t we up the minimum age for this site.
     
  10. Droid

    Droid kglesq's Brother

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    Not a mechanic or automotive engineer...but that kind of seems like a reasonable scenario for limp home mode. And I'm very much of the opinion that limp home mode should only be used in a worst-case scenario where no alternative is available. But that's a bunch of primary engine and user-input sensors giving nonsense data.

    Still need to put together a very basic toolkit for the truck, but am going to make sure I have a good code scanner in it, along with a 10mm of course.

    This failure really stinks of something either loose/disconnected/wet/squirreled or a very broken PCM. My dumb layman opinion anyway.
     
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