Does anybody else notice the wacky actions the throttle takes on our trucks? If you hit the pedal WFO it seems as to retard the motor and not produce the full potential of the 6.7. Also, the other day I was coasting around 20 MPH when i blipped the throttle and the let off, but the transmission shifted and the truck still accelerated for a split second. Is this some 1st year quirks, or a protection program for the driveline?

 

Computer controlled. Anything 08 and up is gonna act just a little wierd because of the emissions systems. You get used to it after while. Roll into the throttle and it will respond better.

 

I read somewhere - that the computer was programed to protect the driveline from the jolt of torque that is generated by suddenly flooring the throttle. So you dont break u-joints, drive shafts, and all kinds of other things.

 

If that is the case -- you think they would have built the truck stronger to handle it!

 

Most of the time I wait, but if I know I'm putting myself into a situation (pulling out in a gap of busy traffic) I throw it in manual and shift to second (if your stopped, coast a half foot and it will shift to second from first; you'll feel it). It takes about 1 full second before you move much but once the turbo kicks in, you better hold on to your head (while watching traffic and shifting to third).

This is without a heavy load, BTW.

 

I think our trucks have very erratic throttle control and for some reason it almost seems to be getting worse. I think they need a flash for it.

 

I agree-throttle management system is erratic.
I don't buy the driveline protection theory, Ford just needs to do a better a job in power management.

Next time you read about protecting the driveline, ask them why the drivetrain doesn't break when you are in low range and the torque is multiplied 3x?

 

my problem is IMO the throttle management is actually causing stress on the driveline. when I have a trailer hooked up and I am almost accidently breaking the tires loose that is a problem.

 

And, forklifts are drive by wire now, lifts and boom lifts don't have hydraulic valves anymore, it's all electric. All that "feel" you learn over time is gone, you can't "feel" equipment anymore. Just the way it is.

 

I am waiting for my custom tunes and new exhaust. They still haven't been officially released from my preferred source, but a few other vendors already have devices in production.
A reliable re-program from a trusted source should reduce the truck's erratic throttle response...then to be replaced by my own more erratic, but more preferred driving habits.
Certainly more risky for the warranty, but the time in my truck is long and valuable to me, and I'm worth the improvements!
Perhaps those of you at lower altitude already have enough truck.

 

Couldn't this be related to traction control? If you turn it off completely (hold the button five seconds) then yes there is still turbo lag but it will get up and fly.

With traction control on, when I'm in snow and floor it the engine is really governed, it wont spin much and holds the RPMs down to a minimum.

 

RSC and ESC auto engages at 35MPH if turned off (5 second button hold).
TCS does remain off at all speeds.

Does RSC and ESC automatically turn off when you return to a speed below 35 or do both stay on?
That's something I haven't tested and don't know.
ie.: similar behavior to the ELD.

 

My traction light never blinks when this happens. From the surging at low speed, to the hunting for a gear when pulling out, this truck needs a update ASAP. When i'm towing 4 ton is when this truck shifts and perfoms the best.....

 

That is a good thought. I will try this tonight and report.