Who is controlling my accelerator?
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Laughing Gas
Joined: Aug 2010
Posts: 852
Likes: 12
From: Kentucky
Who is controlling my accelerator?
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?
Super Moderator
Joined: Aug 2008
Posts: 37,379
Likes: 1,863
From: Frederick, MD
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.
Tuned
Joined: Jul 2010
Posts: 297
Likes: 0
From: Shangri-La
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.
Posting Guru
Joined: Oct 2010
Posts: 1,777
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If that is the case -- you think they would have built the truck stronger to handle it!
Lead Driver
Joined: Jan 2010
Posts: 6,600
Likes: 84
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.
This is without a heavy load, BTW.
Senior User
Joined: Nov 2005
Posts: 290
Likes: 0
From: Albuquerque
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?
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?
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Elder User
Joined: Jul 2010
Posts: 642
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From: herriman utah
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.
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Post Fiend
Joined: Jan 2009
Posts: 6,521
Likes: 11
From: Greenwood, SC
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.
Senior User
Joined: May 2008
Posts: 197
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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.
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.
Senior User
Joined: Apr 2009
Posts: 444
Likes: 2
From: Franktown, CO
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.
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.
Lead Driver
Joined: Jan 2010
Posts: 6,600
Likes: 84
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.
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.
Thread Starter
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Laughing Gas
Joined: Aug 2010
Posts: 852
Likes: 12
From: Kentucky
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.
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.
Senior User
Joined: May 2008
Posts: 197
Likes: 0
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.
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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.
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