Sudden Acceleration

[Jimmy07]

2019 Ranger with 42,000 miles. Was driving slow to park. Truck suddenly accelerated. Stomped on brakes and stopped about a foot before hitting a post. First time it happened. I don't have a floor mat, so not a floor mat issue. Is it worth bringing to dealer now or wait to see if it happens again ?? My point is, if it is not reoccurring, the dealer may not be able to do anything.

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[DVSCYCLES]

Was the AC on?

 

[Vitis805]

It's probably the transmission shifting into a lower gear and surging you forward. Happens to me a lot. Just be careful now that you are aware. These transmissions are too "smart" for their own good.

 

[got3fords]

With the vehicle off, will the gas pedal go completely to the floor and back without restriction? Try this by hand.

 

[9zero1790]

damn that would have made me poop. dangerous condition for sure. id bet ford knows something about it even if they deny warranty. id bet they do lol. be safe.

 

[canyonslicker]

Fat foot and brake pedal travel. It has happened to me a couple of times. You can’t feel the accelerator while braking but it’s being pushed. It scares the crap out of you until you realize what happened.

 

[ctechbob]

With the vehicle off, will the gas pedal go completely to the floor and back without restriction? Try this by hand.

You know these are throttle by wire, yes? No cable to get hung up like in the olden days.

 

[canyonslicker]

You may want to do the ABS function thru Forescan as mentioned on here to firm the brake pedal response.

 

[Jimmy07]

Thanks for all the feed back. I'll check it out tomorrow ... it was scary. The AC was not on.

 

[9zero1790]

i remember a thread some place around 5g about surging accelerator or something

 

[Msfitoy]

Might you have inadvertently stepped on both pedals?

 

[Friday yet?]

I stepped on both pedals early on in my truck ownership. First time caused a total "WTF?!" response. Second time was just "Crap. Did it again" with no drama. Haven't done it since. It does seem that stepping on both pedals is pretty easy to do in these trucks. But once you learn that fact, it's a non-issue.

Contrary to what the Warden thinks, guess I am trainable.

 

[Ron L.]

I stepped on both pedals early on in my truck ownership. First time caused a total "WTF?!" response. Second time was just "Crap. Did it again" with no drama. Haven't done it since. It does seem that stepping on both pedals is pretty easy to do in these trucks. But once you learn that fact, it's a non-issue.

Contrary to what the Warden thinks, guess I am trainable.

This happened to me early on. My guess is what happened.

 

[Rp930]

Unintended acceleration is nearly Impossible with fly by wire. It’s a redundant system. Two separate voltages have to agree or the throttle will go into fault mode.

That said it is not impossible. When I was Field Technical Manager I did discover a vehicle with water in the connector at the control unit and it did accelerate on its own at slow speeds In a parking lot. Very disconcerting when you’re not expecting it. Luckily customer was very helpful at describing when it happened. I just had to find out why.

 

[RedlandRanger]

As others have said, my guess is that you accidentally pressed the gas with the brake - it isn't too hard to do - the brake pedal really should be a bit farther away, IMO.

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