Ford 6.7L Power Stroke Diesel :: Normal To Stop Regen When It Gets To 25% Or Should It Be Stopping At 0%
Jun 28, 2017
I know it seems like everyone's truck tends to have different tolerances when it comes to when it starts and stops regen when it comes to gpl but the last two times my truck has gone into regen it starts at 100% and finishes at 25%. Is it normal to stop regen when it gets to 25% or should it be stopping at 0%. Or could it be that the percentage in my truck is off and it's actually using the gpl to start and Stop? The only thing about that is that forscan says it's supposed to start at 100% which it does so if my percentage is off that would mean it was starting at 75% does it not?
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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
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On the way in to work this morning, I get the "Cleaning Exhaust Filter" message. This was great because I still had about 15 minutes of driving left and it usually comes on right when I am pulling into my driveway. As soon as the regen starts, I can smell diesel exhaust/fumes in the cab (this is going 70 mph on the freeway). When the regen was done, the smell went away. Is this normal? I could understand if I was sitting still getting some exhaust in the cab, but moving at full speed everything should be blowing away. This is my 4th or 5th regen and the first time I have noticed it.
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My truck is a 2004 F350 6.0 as with most of the ford diesels from this era it has hydro boot brakes.
Under normal braking the truck felt fine and the brakes behaved as they always have. However if you where to depress the brakes hard, as if making an emergency stop, the brakes would not lock up in the way they did when I bought the truck two years and 80,000km ago. The problem was slow to appear and at first I blamed it on the larger tiers I was running (stock 2012 F350 wheels and tires (yes the offset is wrong)) but after switching back to my stock wheels for the winter I knew that something was not right. It was something I could live with, it did not make the tuck unsafe it was just that it did not stop as well as I knew it could and this avowed me. I replaced the front and rear calipers and when that had no effect I swapped out the master cylinder this still made little difference.
I drove the company truck all of last month (2008 GMC 2500 Duramax) and when I got back in mine I realised that I had to chase down the problem. I did a lot of reading online and after thoroughly flushing and bleeding my brake system I narrowed my problem down to either the hydro booster or the power steering pump. The plan we came up with for diagnosing was:
1. Thoroughly inspect for PS/Hydro boost and brake fluid leaks following the procedure found here Hydro-Boost Power Assist Systems: Operation Diagnosis and Repair
1a. Consider bleeding the brakes as a bit of trapped air would cause your symptoms.
1.b Consider flushing the PS system. Some suggest this works with tough steering.
2. Have a shop check the PS pressure is within spec. (assuming this is cheaper than buying the tool or just replacing the pump) If it is low, replace the PS pump.
3. If PS pump is fine, or is replaced and the problem is still there, consider replacing the Hydro booster.
It is not super complete but it was a place to start. We checked for leaks and found nothing. The pedal would not sink under braking but would say firm meaning the brake system was free of leaks.
I began a rudimentary test of power steering pump. With the truck in the drive way I could easily turn the steering wheel however, applying the breaks about half way would make turning the wheel imposable. This led me to believe the power steering pump was starting to go. The next step would be to have the pump tested using a power steering pressure gage or take the truck to a shop to have it tested. I found the pressure gage to be more expensive then the new pump so went that way. With 350,000km on the truck I figured it was not a bad thing to do even if it turned out to not be the cause of the problem.
It is a bit tricky to get the power steering pump out but after pulling the radiator line under the truck I could drop the pump out the bottom. The new pump went back in the same way and after a full flush and bleed of the system it was time for a test. What a difference! The truck stops like the day I got it. If your symptoms are like mine I would recommend you check the power steering pump. If it is the problem it is a lot cheaper then replacing a master cylinder or calipers.
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Over the holiday weekend I towed my 13k# 5th wheel 180 miles to the campgrounds.
According to my Torque Pro app, soot was around mid 30% when I left home. Upon arrival it had passively dropped to single digits.
After driving unloaded a few times over the weekend, the soot level had gone back up to mid 30s.
While towing home it again had passively dropped back to 1.1% .......... then boom! A regen starts.
After 22 miles it completed and soot had dropped to -13.2%.
So towing heavy, passively burning soot off, exhaust temps in the 700-800 weren't good enough for the system.
It had to start a regen and boost tempts to the 1100-1200 range WHILE TOWING to basically burn off NOTHING.
Not to mention drop my already poor MPG to single digits.
Just venting about what appears to be unnecessary exposure to high temps and wasted fuel.
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I just had my thermostats replaced in my 6.4, and I'm concerned about the regent process. I read that when the P0128 code is thrown, truck will not go into regen. Is this true? How can I manually start the regen process?
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I purchased a 2016 f350 XLT 6.7 it's basically two weeks old with roughly 1500 the horsepower and fuel economy is incredible however it's developed a terrible shake during regen. It occurs every time regen and shifting down isn't working. Hard to believe a two week old truck has to go back to the dealer and from what I'm reading it sounds like they're not solving it.
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Is there an alert setting to signal when a regen starts? My engine stumbles badly a few seconds after a regen starts. The dealer hasn't found the problem. Right now I just keep an eye on the soot level gauge.
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Last week I picked up a 2016 F-350 with the 6.7 diesel. Since then I have put about 4500 miles on it and gone through 2 or 3 regenerations. About half the miles were empty, half were with about 1500lbs of cargo in the bed. Mostly interstate driving at about 70mph.
However, every time the "cleaning exhaust filter" message comes on in the screen it feels like the truck looses all power for a second. The first time I was going up hill with cruise control set at 70 and it felt like stomping the brakes then hitting the gas all within a second maybe.
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Whenever I take off from a stop or slow to a stop, there's a clunk in the drivetrain. It feels like a bit of play before the drivetrain engages and when it releases...torque converter maybe? Taking to the tranny shop soon...
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I have a'04 f-250 6.0L diesel truck. There are times when i come to a stop that my truck sputters like if it's about to run out of fuel or want to shut off but the tank is full or half. If i am going at a fast pace and then begin to slow down and stop it will sputter.
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My truck is all stock and I am running in performance tune? And my friend the former owner said I need to let her loose about 75 percent of the time I am driving it because it's my DD and I do not tow anything on a regular basis. I do not want to stretch my bolts by unnecessary pushing, I don't know if I'm even pushing it hard but I normally get the turbo up to about 30 psi is that to much?
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I have an early 04, I'm not sure if there's a different in pressure over the years. But I'm curious what normal or average readings are. Btw I did replace the icp and pig tail last year. Here is what I have in psi from my sct
Cold start at idle 680 .23v
Warm idle 635 .24v
Cruising 1800rpms about 1500 .32v
WOT about 4200 .78v
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I wasn't sure if I should be having any sway at all while pulling our new 30' TT. Dry wieght is 7200lbs, GVW is right at 9500lbs, tongue weight is around 800lbs, and I'm running a Fastway E2 WDH with sway control built in. While towing this weekend, I was experiencing a very slight amount of sway. It wasn't what I considered to be much of an issue but my wife and daughter both asked why the truck felt as if it was moving side to side slightly. When I say slightly, imagine a small glass of water filled about 1/4" from the top. The sway wouldn't have been enough to spill the water, but enough to sway it slightly back and forth. Winds were about 3-8mph hitting me from the north west (in relations to my trucks heading).
I do have some suspension enhancements that might have contributed to the sway. I have roughly increased the rear end by 4" by adding add-a-leafs and F350 blocks. I have Fox 2.0 shocks and a Helwig Bigwig sway bar. Plus I'm running 295 Nitto Trail grapplers , all 4 at 80psi. I've read that the more aggressive tires could also be a contributor.
My question ultimately is: should I be feeling any sway at all? Is a very slight amount of sway normal when pulling a 30' 9500lb rear hitch pull?
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It takes about 10 minutes for the truck to drive normal. If I start the truck and sit for 5 minutes, then start driving... the truck has a very hard time changing gears and accelerating. Just trying to see if this is normal or not ?
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Decided to try and swap in LED bulbs into the sub par factory headlights and since some engineer somewhere decided it would be easier for me to have to remove the grill and headlights just to change a bulb, I noticed that the dual horn set up had the horns pointing back to the truck. Even worse, right in front of all the fins on the CAC, Raidator, etc. to reduce muffle the sound.
Now I don't know how things are where you live, but generally when I honk at someone, I'm not doing it so I can hear my own horn. The general idea I thought was so that others could hear my horn.
Of course the same engineers in charge of headlight bulb swaps also figured out the wiring for the horns so you can't just loosen the nuts (10 mm) and rotate said horns 180 degrees. You can rotate the driver side horn 180 degrees and call it good, but the factory wiring won't reach the passenger side horn if you rotate it.
You can however remove both horns and use a small screwdriver to unplug the harness that joins the two horns. If you swap the horns right to left and left to right, then you can put the factory wiring back together in a manner that leaves the horn outlets pointing forward towards others.
I can't insert pics into the thread as I describe things. I used to do that but FTE seems to have gotten rid of my gallery so I can't upload to there anymore and then post photos in the thread that way. So now you get them uploaded as attachments at the end of my rambling.
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What the normal tire pressures are so the TPS will not alarm? The sticker on the door says 65 front and 80 rear for my F-350, but I think this is a bit high when empty or not pulling trailers, etc. Additionally, is there anyway to adjust the TPS settings?
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I currently have a 2003 F-250 6.0 with 112,000 miles on it. While traveling interstate speeds (70+) and the I can hear the cooling fan rev up and down every 10-15 seconds. Is this normal?
Also when it spins up, it sounds normal then make a high pitched squealing noise. Thoughts?
I am also needing to rebuild the fuel bowl. I noticed DieselOrings offers rebuilds for the 7.3 but not the 6.0. Will these fit or any suggestions on parts?
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I'm having a bit of a cold start issue, need to know if it is normal or something is wrong. I live in southern Indiana and it's gotten down to a VERY cold 50 degrees (lol) and the past two mornings I have started it up and it seems to have a misfire first thing in the morning and it will kick into high-idle mode and after I shut it off and start it back up about 20 seconds later after the ECT gets above 100* and it runs perfectly. It has brand new 190/100 injectors from Warren, an IDP tune, and I am running 13 quarts of FoMoCo 15w-40 oil with 2 quarts of hot shot stiction eliminator (tried it before installing new injectors). And also throwing no codes. Is this normal or should I be looking for a problem?
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I have a 12 cc 4x4 drw. I hauled a bull and a cow about 100 miles this morning. I was pullling approx 6k including the trailer. The temp was about 75*. 50-60 miles into the trip I switched to the oil temp screen and the oil temp was 224* and the trannie was 199*. I was going into the wind which was about 20 mph, and I was traveling 75mph. The truck never lugged down heck it never shifted out of 6th gear. When I unloaded the cattle the temp came back down around 190*. Headed home and the temp got up to 226* and the tranni went to 205*. This was going with the wind and just the trailer. I am using oem 10w-30 motorcraft and motorcraft filters. The truck just has 9k miles on it. I am thinking that the oil temp is a little warm, should I be worried. What should I look for to diagnose. I like to do my own diagnosing if I can, the dealers around me can't find anything wrong even if you point the leak out to them. Should I be using a different oil?
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Took a trip today that was 3 hours there and 3 hours back. Truck ran normal on the way there (eot about 202 and ect about 196-198), but on the way back truck ran a little hotter than normal (ect as high as 214 eot stayed within 2-3* plus or minus ect). Fan did kick on every time I hit ect of 212 and would drop it down to 196-198 and oil temp would drop at the same rate.
Truck is stock 190k miles with a bulletproof egr cooler and coolant filter. Oil cooler probably has about 20k on it. (4th one on this truck- since I like changing them out as much as the rest of us). I checked coolant level when I got home and I might've added a pint to get to bottom of sticker. I'm not sure it wasn't a pint low when I did last flush and cooler replacement.
No puking and I can't find any leaks. I pulled egr valve and no moisture in manifold just a worm out o ring that'll I'll replace. I can't find any leaks. Where to check that I haven't? I don't feel like I'm losing coolant because I wasn't really low. My fan never failed to kick on when I hit 212 or stopped at a red light. No moisture in manifold so I'm not thinking losing coolant due to head gasket. Maybe radiator looks ok but tomorrow I will blow out any bugs to make sure.
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