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4A differences between '18 and '19

Discussion in 'Ford F-150 Raptor General Discussions [GEN 2]' started by Donmatteo, Dec 10, 2019.

  1. Donmatteo

    Donmatteo Full Access Member

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    Hey All

    I had a 2018 802a and now have a 2019 802a

    When I was in the 18 and selected rain/snow, 4A would engage as expected and it would change between 2 and 4 a lot depending on road conditions.

    In my 19, it's pretty much in 4 the whole time. It never swapped between 2 and 4 wheel drive.

    Was there a change? I also noticed the parasitic drag is a lot more in the 19 than it was in the 18.

    Thoughts?
     
  2. Small Town Raptor

    Small Town Raptor Member

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    When in 4A, how are you deducing the switch between 2wd and 4wd?

    It's akin to an AWD system and is meant to vary the bias front to rear depending on traction requirements.
     
  3. NHbeast

    NHbeast Full Access Member

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    When my 18 802a is in 4a you can feel it all the time. Especially on spots of dryer road. Feels like torque steer when accelerating out of a turn.
     
    Last edited: Dec 10, 2019
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  4. lka

    lka Full Access Member

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    I always feel it on the 19 in rain/snow. Go to the Power distribution screen and watch it.
     
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  5. Donmatteo

    Donmatteo Full Access Member

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    Power distro screen.

    the 18 would swap between 2 and 4 all the time.
    the 19 is always applying power to all 4
     
  6. Donmatteo

    Donmatteo Full Access Member

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    I get a drag on the powertrain. Very noticeable.

    I dont think it's a flaw but just noticed the 18 and 19 handle 4A differently.
     
  7. Sharkus29

    Sharkus29 Full Access Member

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    My 18 in 4A is always applying power to all 4 wheels. Just changes how much it sends to the fronts depending on driving conditions/throttle input
     
  8. Donmatteo

    Donmatteo Full Access Member

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    Interesting. My would swap power from rear to all four.

    are you seeing this on the power distro screen?
     
  9. Sharkus29

    Sharkus29 Full Access Member

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    Yep. Its always been like that for mine
     
  10. Loufish

    Loufish FRF Addict

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    Is this in the weather mode, or just 4A?....The drag you're feeling is in 4A the front hubs are now locked even if there is no power applied to the front diff....the 802 package has the front Torsen diff.... hence the drag or heavy steering feel...
     

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