I have a 2011 f250 with the 6.7 diesel with about 21k miles and have started noticing that when I get up to speed around 55-65 mph and am just cruising at low rpms the truck starts to skip and jump a little. When you let out of it, it quits. It does not do it all the time though. Has anyone else experience this problem or have any ideas on the problem?

 

I have not noticed any skipping or jumping on mine, but it does sound like the motor is struggling at low rpms, mainly around 40 to 45 in 6th gear. I started locking 6th gear out if the speed limit is 45 or below and it seems to help.

 

I have a 2011 that does this too,kind of a chugging,skipping feeling.
It seems to me likemy old 6.0 I had when the egr valve went was stuck open.

 

I first started noticing it about a month ago and it seems to be happening more and more often. I will probably take it to the dealer next week to have it checked out, no lights or warnings on yet though. Thanks for replys, I will post what the problem was, if they figure out what it is at the dealership.

 

They're going to have a tough time tracking anything down if the symptom isn't obvious without a CEL. Make sure to let us know what they find!

 

My 2011 F350 runs and shifts okay at speed. The only problem I have is that when pulling out, sometimes, the engine hesitates. It takes a second or so to respond. This is really not good when pulling into traffic.

ken

 

@kabur66.. i also have the hesitation problem.. only does it every once in a while.. like when you gun it hard to pass another vehicle..had it do this to me the other day.. stabbed the accel. pedal and it stumbled for a little bit, then took off like a rocket.

 

Possible that the transmission is too slow to react? Sounds to me like the quick changes in speed required is too much to ask of the transmission.

This transmission likes to move to the tallest gear possible and quickly settles itself in 5th or 6th gear at pretty low speeds.

For me, driving in traffic and in town, the transmission irritates me a bit because it always goes to a very high gear. Then when you need to make a move the truck is very sluggish and you have to wait for it to jump two or three gears before it will move.

Try driving around in manual mode, treat it like a manual. See if the response and feel is better. I tend to use it a lot and it makes the truck much more responsive in traffic.

 

Even in manual mode, say 4th, you are accelerating then need to coast for whatever reason for a few feet (person pulls out from a side road ahead, no need to brake) then you accelerate again.
At that point, sometimes, it seems my engine stops for a second then continues on without issue.
I'm sure there's some calculation going on there but it always catches my attention.

 

My truck does the same thing, I think its just having a hard time shifting or knowing to shift. It will rev, hesitate, rev ,hesitate, rev, hesitate, then finally shift, sometimes with a nice clunking noise.

 

I think I would let the dealer have a look at that. I've never had my truck do anything resembling what you're describing.

like everyone else, my truck has the traction controlling (and driveline saving) pause if I floor it from a stop (or from low speed). I'm so used to that by now though that I never even notice it anymore. I just naturally roll the throttle and that bit is a non-issue. I don't think that's what you're talking about but I think some other posts above may have been.

I think my biggest issue in the first few months of ownership was adjusting to driving a diesel, coming from all gassers in the past. Specifically, a drive-by-wire diesel with 800 lb/ft of torque . I didn't like the "pause" at first, but once my driving behavior meshed with the way the truck drives, all is well.

 

I went to my dealer with the same type thing and was told that a lot of it is spool-up in the turbo. "No cel, no codes,.....must be normal....it still takes off like a rocket doesn't it?" I really got no help at all.

 

Bdove~ I know exactly what you are talking about. I had the same issue but the latest flash fixed it. Take your truck in for service.

 

Turbo lag is going to be the likely excuse that you will hear most often but I fully disagree that it is just the turbo spooling...this is not my first turbo and not the only turbo I currently own. I do know what turbo lag is.

Yes, there will be those who say at low RPM, no boost, the turbo does need time to spool up, true. However, the trans decides to shift into higher gears quickly so it is the combination low RPM, no boost along with a high gear that is causing the hesitation.

I've started putting my truck into tow/haul mode when I find I will be driving around at low RPM where the trans has chosen an overdrive gear. Only problem here is that if you choose to coast, the trans will drop down a gear as if you are intending to use engine braking to stop.

 

your dealer doesn't understand how turbos work . Most people who say things like that have heard of a concept called "turbo lag" and they know that it feels like lag and this truck has a turbo. So, they try to explain it that way. Occam's Razor, right? The problem is, they're wrong.

Turbo lag is a swell of power based on the fact that the engine makes N/A power that is less than the forced induction power. The turbo requires exhaust gas to spool up and begin forcing air into the engine. Until the engine gets going /without/ the benefit of the turbo, the turbo can't work. It doesn't just spool up because you hit the accelerator. It needs exhaust gas.

Our trucks have an actual "pause" when you apply a large amount of throttle input. This is by design. With so much torque at such a low RPM (barely above idle), going near-full-throttle from near-zero-throttle can not only be dangerous (think tires breaking loose) but potentially damaging to the driveline. This pause is just the truck rolling the throttle for you.

If you just avoid stomping on the pedal like some sort of angry teenager , you will never experience the pause again. If you need to get out into traffic quick, that's not a problem. Roll the throttle and you're off like a rocket.