Ford 6.0L Power Stroke Diesel :: Intermittent Bucking / Hesitation Up Hills - No EGR
Feb 4, 2016
When I am on the highway, my 2005 Excursion (6.0) will hesitate/sputter/buck intermittently, usually between 70-80mph/ 1800-2200 RPM, but especially triggered by hills and inclines. Each sputtering episode usually lasts about 5-10 seconds and then will go away for minutes at a time. Does not sputter upon take off or initial acceleration. There is no smoke of any kind. Just got it out of the shop where the mechanic replaced ALL 8 injectors and the fuel pump, as well as flushed the fuel lines, and new fuel filters, and oil change (2 injectors were bad, but there was metal in the fuel filters, so to be safe I replaced all of them - ALL OEM PARTS for everything, including filters).
The week before, I had the IPR valve replaced. Also, recently had the back pressure sensor replaced and the EGR was deleted - and turbo cleaned when the EGR was deleted last month. I also tried unplugging the ICP sensor to make sure that wasn't the issue. Dropped $6k into this thing in the past month and about to lose my mind (and wallet). All research points to either clogged EGR or bad fuel injectors, but both have been addressed, so I am not sure where to look next. No current codes showing up. No signs of leaking oil.
View 14 Replies
Advertisement
Have just about 1,600 miles on tuck born on 12/14/11. Love it, but.. When going slow in subdivision I am getting some hesitation/bucking when going in the upper 20s/lower 30s. When I feel it I look down and I am usually in 3rd. Is this the transmissible thing? When it happened Sunday it felt like it was going to die. If I start off with a quicker start (to get to highway speed) it shifts fine. It just started the last few weekends......
View 14 Replies
Finally registered on this site after hearing good things from others who are currently on here. Been a 6.0 PSD owner since buying the truck since new in 2003-F250 CCSB. I have done regular maintenance on it and have had a good run until recently. Everything is stock on the motor and currently has 229 000 miles.
I will describe my current problem: I have borrowed my brother's tablet and have the following numbers from the Torque pro app. While trying to accelerate it now has a hesitation and seems to not have the power.
At idle: 630 psi HPOP, 24 % IPR, 47 volts FICM, ICP volts .1
Trying to accelerate on at highway speeds: 1230 psi HPOP, 83% IPR, 47 volts FICM, ICP volts 2.6
Also, sometimes when starting the truck it seems to rev extra high for a split second. My brother says I may have a high pressure leak on the system. What I should check first?
View 14 Replies
Trying to troubleshoot a very intermittent (has happened on two different occasions during the last 1,000 miles) hesitation from a stop-light. I've been recording engine parameters (Torque application) on both instances as these have been during longer trips after a period of highway driving. 2004 Excursion, 112K miles.
This feels kind of like severe turbo hesitation (4 to 10 seconds trying to start out before it kicks in) but I don't think that's it. The turbo is a new PowerMax turbo replaced 5 months ago. VGT readings seem pretty normal. The EGR valve is new -- the first instance was with the old and the second was with the new. I've also recently replaced the EGR and Oil coolers (before this).
Here's what's interesting in the captured data though... Normally when I coast into a stop-light the indicated engine load stabilizes at about 40-50% and VGT moves to about 65% to 70% at idle. The two different times this happened (actually multiple times at stop-signs/light close to each other over 5 minutes or so for both of these), when I have coasted to the stop, the engine load increases from low values during coast-down (0% during freeway coast-down or 19-30% during other coast) up to 99.6% (or other similar high values) at idle and VGT seems to be full closed at 85%.
There is absolutely no response to the throttle in this situation for 5-10 seconds. I've either been goosing the throttle a bit or putting it neutral and revving it up first to get things going again. When it finally catches and starts accelerating with power, indicated engine load drops to 50-60% again and VGT opens up to 40-60% or so. None of the other parameters I've been capturing seem to read strangely during this that I recognize. No issues observed during cruise and power seems good. No pending DTCs or engine light.
Here's what the data points I'm capturing (once each second):
Boost
Calibration Input Volts
ECT
EOT
Fan RPM
FICM main volts
Fuel Injector pulse width
ICP
ICP Volts
IPR Duty cycle
RPM
Engine Load
MAP
Trans Temp
VGT Duty Cycle
EBP
EGR Commanded
EGR Error
Added today but not captured during these issues yet:
IAT
IAT2
Baro
Accel Pedal Position
Mass Airflow Rate
Mass Fuel Desired
View 14 Replies
So I got a new tranny about a month ago. Everything works flawlessly. Until today.... Going up hills even small ones feels like I'm towing a house. No torque felling. In 3rd and 4th gear (automatic) it gains boost really fast and peaks at 28 lbs. and coasting downhill it slows itself down. I can go from 60 to 40 without braking in a half mile stretch. I fist noticed something was different when I started to drive home tonight; it makes a sort of whining or howling noise. I can't quite pinpoint where it's coming from. I'm tired of this truck but love it at the same time.
2003 125k miles New tranny New injectors New oil cooler and egr cooler Possible bad HPOP
View 9 Replies
Getting DTC P0401 on my 2011 with 92K miles. First time I got the CEL, we were on vacation, so I read the code, took a screen shot, then cleared it. Called my normal dealer, setup an appt, verified that they thought the truck was safe to drive. Coming home from vacation, I was pulling the TT in my sig, and noticed significant loss of power on hills that I have pulled many times before that I couldnt even hold 55 on now. Transmission dropped into 4th a couple times, on hills that it would sometimes stay in 6th, or at most drop to 5th.
CEL stayed off for a week , and came back on again. The funny thing is that after a day or 2, the CEL went back out on its own. I read the codes the P0401 is still there as a stored code(I did not clear this time). Around town the truck drives fine, the only thing I noticed was the decrease in power when towing. Truck is at the dealer now. TECH "isn't convinced" yet that there is a problem. He is not finished diagnosing yet, and I am sure that he has specific tests to run, but I am starting to fear that I will be getting the call to come get my truck.
View 6 Replies
What's the best tune for this motor? I have an hs mini max with the spe hot tune and has nothing but problems towing with with it. They swore up and down for a year I was the only one with issues for a year and then finally admitted it's not good for towing and lots of people had issues with it so they gave me their towing tune for free but it isn't very good either.
The hot tune is a little too hot and keeps going into limp mode when towing up hills even on the lowest stock setting, or really getting on the throttle on any setting not to mention way too high of boost for a stock turbo at 30-32 on every level . It makes sports cars look slow before hitting limp mode though.
Their tow tune fixed that problem but it's boost is too low at only 18-19 (had 24 running stock Ford programming) and it smokes like crazy, more smoke on higher settings without getting any faster or any more boost. It doesn't smoke much on the stock setting but clearly the other settings aren't very well tuned.
I want a tune that will tow 25k without issues and smoke(not literally) sports cars off the line at factory boost level s so it doesn't blow the turbo.
View 4 Replies
I Have A 2013 F250 I Have A H&S On It. I Have It Delete. And The Cel Comes On In The Morning, Ill Get The Code In The Morning. But It Has Something To Do With Coolant Temp Sensor. It Also Does Like A Bucking/Power Surge. Boost Goes From 0-10-15 ,When you Hold Pedal Steady. Do I Need To Update My H&S Or What?
View 14 Replies
Truck is bucking and missing every 10 seconds or so and will stall when taking off in drive sometimes but fires right back up? I got a lot of codes in the torque pro app but some are in grey. Not sure what that means. EGR has been deleted so that's why I got those codes. I was cleaning the back of the truck the other day and found a can of quick start . Guess that might be why i got codes for glow plugs also. I'm gonna post up pic of my codes and numbers of truck running at idle in drive. So far I see I got a code for cylinder 6 contribution? It's in grey tho whatever that means.
View 8 Replies
I have a 2006 F350 6.0L Powerstroke. While towing my RV this weekend in 96 degree weather, it appeared that my transmission started to whine after several minutes of pulling some large hills. I was in tow/haul mode. It did not appear that I was loosing power however the sound was very concerning. The sound went away after leveling off, or switching out of tow/haul mode. The sound coincidentally appeared as I approached the top of the hills which ranged from 1 to 3 miles in length.
View 11 Replies
just overhauled my 6.0. run great for about 3 days now runs really rough when cold. new heads injectors rings pistons ficm fuel pump icp sensor ipr valve fuel pressure is good. Engine rolls smoothly when cold also.
View 14 Replies
We are on vacation pulling the 5th wheel. On the last of the three days driving the transmission starting doing something I have never seen. When running about 60mph and starting up a grade, when I push the pedal and it should shift from OD down, it bucks really bad. It only does it under those conditions and only when towing. It does it when the tow/haul is on and tow haul is off. Also, in the afternoons on the last two da,ys the A/C has started to turn off. The fan still runs but the cooling cycles off. After a while it comes back and is ice cold but then cycles off again. It only seems to do this when the engine fan is running to cool off the engine under load. I have it scheduled at the local dealer for a transmission service and A/C check....
View 12 Replies
Truck is running bad when first cranked in the morning, is bucking and running rough until warmed up, think the oil needs to be changed and which additive is better the archoil or Rev x?
View 14 Replies
2006 F350 6.0 ... I am piling up parts for a bulletproof party later this summer. It has gotten grumpy ahead of schedule. I will hook up the AE tomorrow for consultation.
In the meantime. Running rough at 50. Seems to accelerate from a stop semi ok. Sitting at idle, holding rpm at 1750 I hear kind of a thump under the hood and the rpm drops 300, then slowly finds it way back to 1750 and it repeats itself.
This thump has not been noticed in the past. Could this be the VGT not working as expected?
View 4 Replies
Since our weather has returned to the cold side......my truck has started bucking and hesitating at 45 mph with EOT @ 130 and ECT @ 140. I can gas on it and it will clear up/let off and it would start up again once it gets below 50 mph. Once the deltas reach 150+ it clears up completely. Its never done this until this week. FICM volts are steady @ 48V. What is causing this or what to look for?
View 2 Replies
So, I was on my way back home driving through the middle of nowhere Utah late at night, when I had an injector tip crack. I was able to identify which one and unplug it so I could get to Grand Junction, CO (about 350 miles away) where I have family. After a power nap I started calling parts stores and found an injector from Advanced Auto Parts (I couldn't find a motorcraft reman, but I was restricted for time). Installed it and all seemed good so I hit the road again. However, nothing changed. It still had the bad miss (rough idle, jerking/bucking when the torque converter locks up) just like when I had the injector unplugged.
The truck is an early 2004 6.0. It's the number 4 injector. I finally got home and hooked up my AE scanner to discover a #4 injector circuit low P0270 code and circuit contribution/balance fault P0272. It's definitely missing because disabling it has no effect. This could be a loose connector at the injector or FICM, because I can't afford another injector right now.
View 14 Replies
So lately I have been having issues with my 6.0 smoking, hesitating, and chugging. It seems worse when the vehicle has been idling for a minute or two (as in at a red light) and when I depress the accelerator it starts to move, but chugs and sputters, spurting light gray smoke, then the boost hits hard, the truck surges forward, leaving a massive cloud of smoke behind, then seems to run fine until I come to a stop again. I got the usual EGR codes, so I cleared the codes, pulled and cleaned the EGR valve of all built up soot and carbon, and reinstalled it. It seemed to run okay again right after doing that work on it, but then started acting up again this afternoon.
Shot the same codes for EGR (P0404, P1335). I cleared them again, and it continues to drive like crap. Other than EGR that I can look into? Or will I need to pull and clean the valve again tomorrow when the sun is up? At first I was thinking I might also be having fuel injector stiction issues, possibly turbo vane stiction issues, maybe FICM issues, but it's only feeding me codes for EGR.
View 12 Replies
I'm taking my new to me 2011 KR 6.7 I've had it 1 week, to the dealer tomorrow to get them to look at the hesitation on takeoff. I have read on here that not all trucks are doing it. There is 25500 miles on it and have been averaging 15.3 mpg empty, is this about normal for what people are seeing? I'm running the 3.31 gear ad I thought I would get better mpg. This truck was built in Feb. of 2011 would it have the 400/800 settings or would it have to be flashed?
View 14 Replies
My truck is developing a hesitation or a miss when accelerating. It only does it in the beginning of accelerating like when just starting off from a stop. Seems like its more noticeable with the more I get on it. If that makes any sense. When just lightly accelerating it doesn't do it, like going slow through town from light to light. But when I give it more is when I feel it. It seems like it only does it before the turbo kicks in and it puts out a little smoke too only before turbo kick in. After that it runs good with no noticeable miss or anything. WOT runs feel good after it clears up. Its just when first starting out with anymore that 1/4 throttle I can feel it.
View 14 Replies
I have a 06 f250 king ranch with 6.0 . A few days ago my scangauge showed a code P0405
I changed my egr and after it showed two codes : P0405 and P0404
It still has a hesitation and loss of power , although better than before the Change.
View 3 Replies
i bought a used 2011 F250 and really like the truck and there is no comparison when towing the trailer.
1.) I've noticed the truck doesn't shift smoothly from 3rd to 4th. Under light acceleration the RPMs climb, then drop slightly, then climb, and finally the truck shifts into 4th gear. It's almost like the truck wants to shift but doesn't. I believe a selenoid was replaced on the truck.
2.) From a dead stop, when pushing slightly on the gas pedal there is a slight hesitation or unresponsiveness with the truck wanting to proceed forward.
View 14 Replies
