Ford 6.0L Power Stroke Diesel :: Rough Running / Truck Started Bucking And Hesitating At 45 MPH
Feb 18, 2015
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?
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So I have been fighting a rough running, missing problem. My truck started running rough one day on the way home. I got it scanned, it showed injector contribution balance 1&2. Made sense to me that it threw those codes. I replaced 1 and 2 with oem replacements. Got that all done, truck still ran like crap. I changed fuel filter with motorcraft ones and drained the water separator. That didn't work. I am getting it scanned again, so i will have codes shortly.
Also, for a while it would run with absolute no problem. It was intermittent like that. Run bad run bad run bad and then one day run flawlessly. I though it was electrical. Checked all the common places for chaffing, saw nothing. Even did the wiggle test while it was running, no change. But it hasn't been intermittent for a while now.
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Well it finally happened, a couple of weeks ago I was headed to an MX race and my check engine light came on and it started running rough. Long story short a piece of an exhaust valve broke off and went out through the head. Dealer has been great even though I was 300 miles from home and they did get me a rental(small POS SUV). Truck was supposed to be finished this week, but now they are saying the head gasket is on back order and they probably won't have one until the middle of April......... I can't be without my truck that long, but not much I can do. By the way truck is completely stock with just under 20K on it, and I have never had any issues with any of my Ford trucks or Ford diesels, even my old 6.0.
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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?
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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?
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I have a 2001 F350, 7.3. My service engine light came on and immediately the truck started to run rough and lose some power. I've checked the under the cover connections and they were both connected, I replaced the cam position sensor and I still have the same problem. The worse part of the hold thing is that there are no codes stored so I'm flying bind. Where to go next.
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My Excursion got 4 new injectors a couple weeks ago and when I got it back, it was running rough. My mechanic told me it was going to take about 100 miles for them to break in.
300 miles later and it is still running rough. So I opened the hood, took a look around and saw this wiring harness unplugged. Where it goes? Youtube video shows where the harness is [URL] ......
Also, my truck has been shaking violently at 50 miles per hour, unless I hit tow haul, then it is moved up to 60... I am assuming its connected some how to that wiring harness being disconnected.
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My truck was running rough when cold, I went to check the ficm voltage while wife was cranking and coolant shot right into the ficm and cooked the sumbitch. Stop laughing that stuff happens to me all the time. Anyhow, got a new ficm and truck wont start. Starter kicks out after a few revs. I ran my own solenoid wire to the starter and it cranks just fine. ficm at 48.5 koeo and cranking, icp 1100+, ipr from 14.8 to around 40%, ...
It takes a few seconds for the cam/crank to sync but it does. I changed the fuel filters and primed it, Got new batteries, and threw a crank sensor for s+g. With the key on and me cranking it using the solenoid wire, it almost starts. But from the key it will kick out after a few seconds. All fuses and relays are good. I hear the pcm also controls the starter, could that have cooked when the ficm went or would it blow a fuse? Diagnosing using a scangauge2 ....
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I have an 04 F2 50 with 6.0 with approximately 225,000 miles. I filled up with gas last Wednesday and every so often the truck will start running really rough and then it will clear up. Is it possible to of gotten some bad gas if so what products are out there to clear that up. Could've been injector going bad what are the best products for cleaning injectors. No check engine light on, gauges are good, nothing different on the scan gauge.
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This has me puzzled to no end. After my son had put fuel in my truck it began to run rough, and had to be towed home, and now won't start. Now the first thing I thought was that he put regular gas in. But he was sure he had not ,and the receipt from the pump indicates diesel. It was hard starting before this happened.
1st Misfortune of having gas put in instead of diesel and did your vehicle run afterwards.
2nd Here are my readings from my scangage:
Sync Yes/1, Ficm main power 48.5 v, ICV .17 (2.01 when cranking). ICP 1572. IPR 50.7.
Checked upper fuel filter for bubbles, none.
Engine oil pressure comes up immediately on cranking.
Don't know what else to check, these readings look fine to me. Only the fuel is something I'm not 100% sure of. It does smell like diesel not gasoline.
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2004 F550 with a 6.0. I had to clean out my fuel tank, replace the HFCM and filter on top of the engine. When I start the truck it will run for 30 seconds or so, start running rough then die. I opened the cap on the fuel filter housing on top of the engine to make sure the fuel was getting there. I turned the key on and the fuel bowl quickly filled up.
After a short time however, the fuel drained out. To where I do not know. I don't think this is normal as every time I've changed the upper filter on a 6.0 it is always full of fuel. Why could this one be draining out and could that be the issue why the truck dies after starting and running for a short period of time. I changed the o-ring on the cap and the new HFCM was purchased from Ford.
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2000 Ford Excursion, 7.3 PS with 210,000 miles. I am on I40 at a truckstop. I was rolling down the freeway last night when the truck started bucking. I pulled of the freeway and here came a thunderstorm. I waited til this morning to check for codes cheap scanner. I pulled a code P1211. I waited for NAPA to open so I could take it in the shorts. I bought a fuel filter and an ICP sensor. After changing them out, the truck runs then starts missing. My battery is about to die so I will finish post shortly.
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2001 F150 4.6. Just replaced all 4 oxygen sensors and spark plugs. Replaced rubber grommet on brake booster as it was leaking vacuum.
Truck is still running rough hesitating.
Pulled codes came up as PO141 oxygen sensor heater circuit. PO171 passenger side cylinders running lean. Fuel trim outside limits.
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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.
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I had an HPOP line burst and soak the engine compartment with oil. I replaced the line and degreased the engine and rinsed it off. I started the truck and let it idle for 15 minutes or so before driving it. On the way home right after a shift it started chugging and running terribly. The check engine light was on as well. I limped it the mile or so home and shut it off. I restarted it and it runs just fine. I checked the DTC's with Forscan and there were a bunch of things that were mostly related to the HPOP and the MAT sensor that was shredded when the line blew. I left the hood open to dry out today and I'm hoping it is just some water in a connector. Does that sound plausible?
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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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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 have a 7.3 that's running rough. Started it the other day it ran alright but started blowing white smoke. Bought a oil and fuel additive i was going to run through it. Came a few days later, it stated up and was real loud and sounding like it was loping. It blew a good amount of white smoke, but it just smelt like real heavy diesel. Now i can only turn it over and it won't start.
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Last night pulled in at rest stop and truck started surging then stalled put dieselkleen in and topped off tank but no luck eventually would not run at all. Had it towed to ford and this morning started right up running fine. Having them change fuel filters. Not sure what to do got to get back to drive?
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My engine cooling fan came on when I first started the truck, was reading of 2k on torque app, ECT was appx 100* with the EOT a little cooler after about 5-10 minutes things went to normal around 600 rpm. It did not happen anymore during the drive, I was seeing about 192* ECT and 198-200 EOT. I let her set for 2 days and took her to town and the fan was at normal RPM's, Is there any problems or is that normal?
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Couple days ago the cab of my truck started shaking some more than usual. Its gotten worse now, however. Happens the worst around 60-80km, light on the throttle just cruising in overdrive, whole cab shakes badly. Chop the throttle and its completely gone, any heavy on the throttle and it's gone as well. Does it loaded and unloaded. Okay at highway speeds but like i said around 70km its bad. I've got my guesses but what really it is?? Truck runs fine otherwise...
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