Ford 6.7L Power Stroke Diesel :: Truck Is Boosting While On Gear When At A Stop
Oct 6, 2015
My 2012 f250 is been acting weird, usually the truck is boosting while on gear when I'm at a stop (around 0.40) I think that's normal on a 6.7 because it's always done it, but since yesterday I noticed it sounds different and it's not on boost anymore it just vacuums while on gear at a stop (around -0.25) I'm thinking it's the wastegate solenoid but I'm not 100% sure, and the truck doesn't boost as fast as before but it drives fine and I'm actually getting better gas mileage since it doesn't boost as before, what it could be? It's tuned and deleted....
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I have an '04 6.0 and it doesn something strange. When for example I am going up a decent grade hill and passing, if I have to let off the throttle and then re apply, the turbo won't build boost, it sits at a couple pounds for a few seconds. Then after a few seconds it will build boost quickly again and work generally as normal. If it doesn't respond and I really need to get it to build boost NOW, if I push the accelerator to the floor, the delay shortens and it will often kick down a gear and then build boost. So if I gently accelerate, very slow to recover, if I hammer it, much quicker but regardless, when it's happening it's almost always the same situation, fully warmed up truck, warm/cold/freezing day and it happens when I back off and re apply. Thinking maybe a worn unison ring but not sure..
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Are they known to cause any noise? VGT Solenoid.
I have recently developed a slight whistle/squeal when boosting and when letting off on the pedal. I initially thought I had a CAC boot starting to split out, but since it's making the noise when I let off as well I doubt that the problem.
It isn't constant, and only does it for a second or two when it happens. It's not extremely loud, just loud enough to make you wonder what the heck it is...
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So about 3 days ago I made a long 9 hour drive. No problems at all but I did allow my fuel to get a little lower then I normally do. About eighth a tank had 30 miles left on the digital read out. Stopped and filled up at loves where I always get my fuel. And off I went drove it down to 3/4 a tank and made it to my stopping point. Got in to go about 7 miles down the road and come to a stop sign and slowing down the truck died. I thought crap I forgot to turn off the auto start but never done that before. Stopped and stared truck as normal. Made it to my stopping point again. Headed back to the house and doing on average 55mph and truck surges like it wants to die but doesn't.
Rpms drop below 500 and it keeps going I get to same stop sign and slowing down again doing maybe 25ish and truck dies again as I have my foot on the break. Put in nut and started it right up and drive on home. Today went about same distance. Only this time I started it with key and was doing down other things while letting it run it just dies start it back up and take off get to where I was going and it surged or hiccuped so to say. Again started it once I was getting ready to leave and let it run for about 5 min and it died had the heater on as it was chilly out by the lake. Got in and restarted it and it was blowing cold air and had a diesel smell to it. Wife asked me if truck was going to blow up. Backed out of area and put in drive and made it 80' or so and truck died again doing about 10mph
Checked so far
Batteries checked and both are good
No mods done to it
New ICP sensor and pigtail
New water pump
New injectors 20k miles ago
Oil changed 1100 miles ago
New filters upper sad lower
2003 Ford F-250 King Ranch 6.0
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2011 6.7 with 3.55 gearing. Just got the truck. And it seems when its cold the truck will rev high in 3rd gear and then sort of fall into 4th gear sort of losing power for a split second. If I gas it hard, its not as bad. Usually only happens like I said when its cold. Check the trans fluid its full and looks clean. My guess is some sort of sensor or the computer???
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So from what I have gathered online, it is an injector(s) issue. I've only had it happen to me twice at that speed but when I came to a stop afterward, my truck was barely idling.
I'm not sure if my sct programmer is able to show injector codes but it will show gp codes. I guess my question is are failing injectors that intermittent typically? Also, much luck with Rev X clearing that issue up?
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I was driving down the interstate with cruise set at 75 an my truck jerked twice an my cruise cut off. I tried to rest it but it wouldn't. Then I noticed my speedometer wasn't working. Truck will still crank an drive but acts like it has no power an will only at up to 16 psi of boost.
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Luckily I was sitting in the driveway. Pulled the truck out of the garage. It started fine, idled fine, did not make as much noise as I was expecting but was warmer in the garage than outside. Stopped in front of the garage door to grab a couple things in the garage, jumped back in and it quit before I could get it in gear and roll out. Weird. This is the first time I've ever had to get a tow.
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I have a 2005 Ford F-250 Powerstroke. At times when stopping at light or for any reason, I give it gas but it does not want to go. It's like it is not even registering that I am pushing the pedal. I shift it into neutral and rev it up then switch it back to drive and it goes and puffs out smoke. What is going on?
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I was driving home tonight and stopped at stop sign. I took off and truck died and coasted to a stop. I tried to start but all it does is theft light blinks really fast and will not turn motor over. I tried to reset pat by following procedure I found on internet. Still no start. I then unhooked battery cables and left off for 15 minutes then hooked up but still no start and blinking theft light. I also tried spare key and still no start. What else can I do. I had it towed to place that just bulletproof my truck. Truck has been running great. I did not want to leave it on the side off road in the middle of country all night.
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How does one clear the computer to prevent the display "Check Coolant Additive" from appearing every time I start the truck. I know that a chemical test is needed to determine the status of the coolant.
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2013 CCLB, 33,500 miles, stock emissions
While towing a 9000 pound trailer at interstate speeds (75 to 80 in Wyoming), when pulling a hill, the truck downshifts to 4th gear, boost is about 18psi, eng and transmission temps in the 230F range, EGTs around 500C or 935F. RPM increases normally to 3000 then the turbo gets very loud and boost drops to about 10psi. The truck shifts to 5th gear, noise decreases but is still present, shifts to 6th and noise goes to normal after a couple seconds and boost builds normally.
This just started today. I have about 8000 miles towing this trailer and never had this before. I have about 350 miles until I'm home so I'm headed back out. Will play around with manual mode and see what it does. I also took a video of the gauges while this happens. Audio is difficult to discern. I will try to get better audio and post when I get home.
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Wtf is going on, Temps are all good, no check engine codes...bad diesel fuel? I had 1/4 tank of diesel fuel when I filled it up...
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I know there are a few threads floating around regarding truck dieing, but mine is slightly different than the others, maybe its the same culprit, maybe not, but i thought i would start a new thread just in case.
First, I commute about 50 miles to work everyday, truck gets plenty of interstate highway run time, smooth as silk. About a month and half ago when i almost got to work I slowed to stop at a red light. As I came to a stop the truck "stumbled". Acted like it wanted to die but caught itself and kept going. I said whooaaaa girl, what this? Ive had this truck for almost 10 yrs now and never anything like this. About a week or so later, same commute, same red light, cept this time it dies. Starts right back up no problem. Just acted like someone turned the key off.
Then a week or so after that, while driving home this time, as I pulled up at the house to check the mail at the mailbox, when i came to a stop it died. Cranked right back up. Before I could put in drive, it died again. Cranked right back up and i drove on into the driveway. Then a few days later, while checking the mail again, it died again. Cranked up immediately and parked.
Today, while driving home, after i had gotten back to town, but before i got home i made a stop at bank drive thru, when i came to a stop, it died. While cranking it wanted to start and kind of stumbled on itself and died. Then it cranked right up and i came on home no problem.
So far it only occurs after approx 45min to 1 hr of operating time so the engine and everything else are at temp and far from cold. After reading thru some of the other threads of similar but different conditions (cold start dieing, dieing while under power, etc) Im getting flooded with ideas of what could cause it, but not settled on any.
1.Could be failing ICP? (original, has never been changed, 317k+).
2.Could be plugged fuel filters? (been a while since changing, approx 30k+)
3.Could related to one of my own earlier threads regarding possible failing alternator (when rpms drop can volts drop enough to kill engine?)
4.Could be loose ignition switch? (about 2 yrs ago i had to swap the blinker switch, to get to it had to remove the ignition. Upon re-installation the switch never did get tight as before and was loose. Been loose ever since. To the point that with key out of ignition and door ajar i will get the door chime as if the key was in ignition. I can bump the ignition, and chime goes away. Been this way for two years and no apparent problems. Until now maybe?)
I was thinking ICP after a few of the other threads, but after tonight Im leaning towards the ignition switch. I guess i can try to wiggle the switch after cranking tomorrow and see what that does for a trouble shooting effort. Is there a way to trouble shoot the ICP to see if its failing or not? Isn't that a fairly costly sensor? Would hate to buy one and not be the cause, but after 317k i may need to buy before too long anyway.
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Well, last night I took my F-350 up a wheeling trail. I'd been up quite a few times in my old Rover, so I knew I could go a ways in without damage. Just uphill, muddy, and ruts / rock steps.
One thing I notice is that when you engage low range in the diesel, the transmission starts in 2nd gear. My previous gas Super Duties always started in 1st. I'm assuming this is to protect the transfer case from torque overload. Also, the throttle response seems to change when low is engaged (the pedal becomes less responsive, which is nice).
I've had the gas Super Duties off road before, and all of mine have had the locking rear diff. The diesel lugged along perfectly. My biggest fear was crunching the DPF / SCR / DOC canister on a rock step. In that respect, I'd rather wheel a gas. The manual shift function makes a lot of sense in low range - you can force a start in 1st, 2nd, or 3rd. And prevent meaningless up / down shifts since the grade can change quickly.
These trucks' biggest hindrance is their size. However, if you have the trail room, they are actually excellent off road. Many people look at a Super Duty and see a vehicle good only for pulling or hauling. Not so, these trucks are as good as a Jeep off road, again with trail room being the only concern. The locking rear diff was never really needed, but I engaged and disengaged a few times to keep the mechanism free. I really love this feature.
One thing that happens frequently for me in north-east wheeling is water crossings. Could be a simple brook but mostly it is mud holes encountered on tight trails. In some cases these are only a foot or so deep; in other cases they are 4 feet deep. Ford states to "try" to keep the water below the level of the hubs, which amounts to about 15". Aside from possible front axle contamination, my biggest concern would be the electronics on the diesel which are mounted to the frame or floor pan (transmission module, NOx module, etc.) The gas Super Duties don't have these concerns. In the old days, as long as a diesel had air, the engine would run under water. This engine requires electronic control of many things, including the injectors...so it won't. There are also some axle / transmission breathers which run about floor pan high to be concerned about, but these can be easily extended.
Maybe it's due to the twisty frame which GM loves to insult Ford about, but these trucks have excellent wheel articulation. I'd be surprised if a coil sprung power wagon flexed more, at least in the rear. I'm impressed.
Finally, the traction control. I experimented a bit on a slippery rock step. This was the only step which required the rear locker - sort of. The front wheels climbed the step, but the back flexed to the point of one rear wheel basically almost off the ground and severely unloaded. With 4x4 Low engaged, and traction control "off" as much as Ford will allow, the truck could not pull itself up. Turning traction control on allowed the truck to very nearly pull itself up. A little more throttle / finesse probably would have gotten the truck over, but lots of ETC operation glazes the brakes and spews brake dust everywhere. Being able to start in a higher gear manually really adjusts the torque control. Locking the rear end and the loaded wheel bit right in and she went up and over.
When doing some off-road driving, the "off-road" screen for those of you with the LCD message center is kind of fun and informative to watch. It's nice to see how far your wheels are turned left or right when spinning in ruts or what crazy angle your truck is on. Howie Long could probably document the exact up / down / left / right slope angle a Super Duty needs to be on in order for the tailgate not to open. I never had an reason to open the tailgate while in these crazy angles, of course.
Overall, very impressed. It's not as good as my old Range Rover, but I would say more talented off road than ALL other Ford vehicles except the Raptor.
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When the truck shifts into 5th gear i instantly feel a constant vibration and noise until it shifts to 6th gear. This happens nearly every time while driving at 40mph. Rpm range 1200 - 2000. I bought the truck new on June 30th and noticed the problem on my way to work on Monday July 2nd. Took it to the dealer on July 5th and the tech said it was the torque converter slipping. I drove it home because they didn't have time to work on it. Took it back on July 12th and the dealer has had it since (currently 30 days) They originally told me it was not the engine or transmission and it was an exhaust problem. Last week they said it was the motor mounts and said they would be done.
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I am pretty sure my pedal is going.. Today and last month it would just die from a dead stop push the pedal and no go, but truck idling fine. I cleaned it off a few weeks ago but now its back. push pedal in and out a few times and all is fine for a few weeks. Truck runs fine other than that. Does not throw a code, just trans light comes on because no movement I think, then it goes off as soon as i start to move along. I have a adjustable pedal assembly 2c3z-9f836-de 508.45 at white bear lake ford.
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My 6.0 with 178k on it just started to have issues today. Low power. When I hit the pedal hard the motor revs and the truck barley moves. When I baby it it goes up to speed and shifts fine. Overall lacking power and not going anywhere. No CEL on. Turbo spools and seems to be ok.
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First post since I bought my powerstroke. I was looking for some diagnostics.
On my way to work this morning and the truck started chugging like it was wanting to die and had no power, the pedal was to the floor and I was barely moving. I was able to nurse it to a parking space at work and pulled the codes, using the Torque pro. This was what I pulled:
P0284 - Cylinder #8 contribution/balance
P0299 - Underboost
P0611 - FICM
P0401 - EGR
P0671 - Cylinder 1 glow plug
On the way home I didn't even hit 5 miles and started into the same symptoms. So I decided to call for a tow, because my commute is about 60 miles one way. In waiting for the tow truck I disconnected the batteries and reconnected them thinking that it might "reset" something. I started it up and the same thing occurred, so I tried revving it up, and starting it up and shutting it down on and off for about an hour. Thinking I picked up some bad fuel. Drove it for a short distance and found things were getting better. I was able to make it home and pulled the codes again. It came up with these:
P0284
P0603 - Internal Control Mod.
P0611
P1000
Also on the ride home I had excessive amounts of black smoke from the exhaust and found a couple of large drops of oil on the driveway where i normally park, larger than what I normally see.
So my question would be what is the cause of all of this?
A little about the truck. it is a F250 CCSB with about 139xxx miles on the clock. I bought it from my brother when he had it he had the FICM replaced (with the 58V option) and the Bullet proof EGR installed. I replaced the fuel spring with the blue one shortly after I bought it.
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I removed all 8 injectors because my truck felt like it had a dead cylinder one morning after I did oil change and filter and fuel filters. Truck ran great the day of the fluid change. The next morning however truck was hard to start no power at all nothing. Felt like a dead cylinder so removed all 8 injectors and ohm them all ohm at 0.4 to 0.5 except number 4 injector it ohm at 0.4 and 0.7 that's not in spec right or am I wrong? Do I need a new solenoid? Keep in mind tho number 5 and 8 injectors had contribution codes but they ohm good. So I'm going to tear the injectors apart and see what's what. But my question is do I need to replace number 4 injector solenoid?
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I just pulled over when my truck flashed reduced power. Pulled code and it came up poo88. What to expect?
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