I have a 2004 F150 4x4 automatic 5.4 Supercrew. When I stop on an incline while in traffic or at a stop sign and let off the brake, the truck rolls back freely. You have to press the gas really fast or you will roll into the auto behind you. It is like it is a straight shift and the clutch is pressed. This is the first time of any automatic I have owned to do this. Is this normal with this truck or is there a problem.

 

If there's an incline and your foot is not on the brake, it would seem that gravity would cause something with wheels to roll.

 

Mine does it...I think it must be something to do with the torque converter setup or something. I noticed when pulling into my garage...my old Ram would climb the ramp into the shop without pressing the gas but my F150 will roll down it. It has to be something to do with the stall in the torque converter I would think.

 

Hi.
My 1997 Ford Expedition does the same thing. I used to live on the hill in Duluth, MN and leared to be a "master" at two-foot driving. Even though it is illegal, I found that it was much better to do that than rolling into the car behind me.
The 2004 FX4 does the same thing, on the same hills. Just the way it is set up, no problems I don;t think.
MK

 

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(I used to live on the hill in Duluth, MN and leared to be a "master" at two-foot driving. Even though it is illegal, I found that it was much better to do that than rolling into the car behind me. )


You mean somebody actually wrote a law against using both of your feet to drive with?

My truck also will roll when either of my feet are not on the brake.

 

Yeah I know for sure in MN and WI it is a law.... For two reasons that I can think of.
People who drive two footed are more likly to get into accidents because they get confused in a sudden brakingsituation and usually jam on both the gas and brake at the same time, and usually the gas wins....
And that also people who drive two footed usually get a little lazy and let thier foot rest on the brake, making their brake lights stay on all the time, and basically not letting anyone know when they TRULY are going to stop.
mk

 

Yeah I quess staring at someones brake lights constantly on would get annoying.

 

Mine does same. Does anyone know why it's set up like this. Maybe for offroading?( I've read that on really steep downgrades, guys would put it in reverse, then to slow down hit the gas). Maybe, maybe not.

 

I really wouldn't say it is "set up" like this per se, it is just a mechanical limitation to hold that much weight at that low of an RPM on that steep of a grade.
I don;t think putting it in reverse is the right idea... Something tells me that that tranny probably doesn;t want to turn backwards using negative torque at the input shaft.... But I could be wrong, I am sure there are more tranny experts on here somewhere!
MK

 

I wouldn't call the entrance to my garage a STEEP GRADE. My Ram would actually go up the grade without pressing the gas...my Screw will roll backwards down it. The Ford has a higher torque rating than my Ram did (5.9L/360) so its nothing to do with engine power. I think for what ever reason the transmission has a higher stall torque converter in it than most other trucks I have owned before (this is my first Ford). I am not in anyway saying there is anything wrong with it, but its deffinetly different than I am use to.

 

My 2001 Ranger did the opposite, and the salesman pointed it out on the test drive. We actually stopped on a steep grade, and the truck stayed stopped without the parking brake, service brake, or anything. No matter what grade I was on the truck stayed put.

I liked that about the Ranger and with that my F-150 had a similar setup.

 

[QUOTE=Kendall]...You have to press the gas really fast or you will roll into the auto behind you...QUOTE]

Ya its real fun when you take into account for the throttle delay. you hit the gas real quick to stop the roll backwards but because of the throttle delay you still roll back till it kicks in and then you almost hit the vehicle in front of you.

 

Mine does the same thing. All of my other vehicles will roll forward slowly when in drive, even without pressing down on the accelerator pedal.

My new F150 wont move if I have it in drive and dont press on the gas pedal.

 

My truck will not roll back it holds its self.

 

I've got an 04 Supercab 4.6 and mine doesn't roll on any inclines. There is a really steep incline right by my school and it was a pain in my 5 speed ranger but my F150 doesn't budge when I let off the brake.