Ford 6.0L Power Stroke Diesel :: 2005 - Intermittent Lumpy Idle When Hot
Aug 19, 2016
My 2005 Excursion, at 198K miles has become more of a 'hangar queen' in that I only use it for big jobs. I've kept it for towing/hauling and making long highway runs with more than 4 people.
The truck, 99.8% of the time, runs super. It pulls like a locomotive and gets decent fuel economy (17 mpg running 75 mph empty). I've got the 'blue spring', EGR delete, ARP headstuds, 4" MBRP, Banks intercooler, and run my SCT tuner all the time on "8000 lb tow".
But...there is this weird intermittent problem. It appears to only happen when it is warmed up and driving around town. Sometimes, when I pull up to a light, with my foot on the brake, the engine will sort of go into a 'lumpy race idle' and you have to clamp down on the brake pedal to keep it from lurching into the guy in front of you. Other times, it just runs rough and idles 'lumpy'. It has only died maybe 2 times when acting up. Often, the symptoms disappear on their own and don't come back. If I turn off the engine and re-start (to keep from scaring people at the bank drive-through) it usually runs fine after restart.
I've got an EDGE CTS monitor so I've been trying to find out from that what is going on. I can't seem to catch the parameter that might tell me. My local 'indy' shop can't find any codes thrown. The truck had new alternator, batteries, and starter motor installed in January this year. These symptoms have been going on for several years. Recently, they seem to occur more often.
I've searched on this site a few times, but with no definite 'hit'. I'll admit that I'm a big out of the jargon. I keep thinking this is related to FICM, but everyone seems to say the FICM would manifest as a cold start problem. I do know the FICM sits right on top of the drivers side valve cover. It has got to get hot.
FICM?
Injectors?
How do I kill this one strange problem?
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Started my 2005 f250 powerstroke, idle about 15 min and died like I turned key off. Hooked up scan guage had no flp, fmp or syc ipr and icp was good. Checked ficm relay and fuses and all checked good. Next morning went out and it started flp, fmp, sycall good. Idled about 1 hr and died again same bad readings. Messed with relays and wiring to ficm, it started and died after 2 min. No start again, next morning still no flp, fmp. Went out again in afternoon and everything was good again, I did nothing to it from am to pm, was loading my pistol they shoot horses don't they. I have new batterys, I changed the ficm power card last summer for low fmp. When it is running everything looks and sounds good no miss.
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My IPR value on torque pro koeo is at 14.7. Is that normal? Usually idles around 23.7-24 but when I experience a slight rough idle IPR will be 26-27. When I was under the truck last week I did see there's been oil leaking somewhere seems leaving evidence on the drivers side rear of bellhousing. Any relation?
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I replaced the exhaust back pressure sensor and the readings on my sct programmer didn't change at all so I don't want to keep blindly throwing money at it if one of you has experienced this and found a cure. The interesting thing is it never throws a code or check engine light or anything according to my sct. Doesn't even show that the egr valve is unplugged. I have read that it could be a bad turbo, vgt solenoid, icp, throttle positioning sensor, or a couple other things.
It feels like I'm the front car in a bump draft in cup racing when I'm at a steady speed. The truck has arp head studs, new style egr cooler with the tubes, coolant filtration, new oil cooler, new ficm, blue spring, all filters have been changed in the last month.
2004 powerstroke surge/ rapid idle - YouTube ...
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In your experience, what issues have you seen that caused intermittent rough running at idle, but did not throw a code. I have monitored (with numerous scanners/gauges) this 6.0, but cannot get a code or see any of the sensors out of spec.
At Hot idle:
IPR: 24.2
ICP: 640
ICV: 0.90
MAP: 14.7
MAF Volts: 1.5
EOT/ECT Deltas within 10 and Avg ECT=192, EOT=199
EGR Valve cleaned and EGR demanded = EGR Measured
Vehicle will run rough after long runs or towing. Cylinder Balance test showed all injectors on. What could be the cause?
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Been working on a 2005 6.0 with 218kish miles on it. When I got the truck it had a contribution 2 code stored, no check engine light, just could see the code on the code reader.
Truck idled like crap, lacked power, so I replaced the injector. Truck improved but still had a miss, this time it had a stored code of injector 6.
Ordered another injector, got it installed today. Fired the truck up, ran perfectly, drove it around, absolutely 0 issues ran like a dream. Parked it for a few minutes before starting it again to wash it. Rough idle, not horrible, not noticeable. Cylinder 6 contribution code stored again, no check engine light.
So I drove it, I drove the hell out of it for about 15 minutes with the AC at full blast, WOT, etc etc. By the time I was done, truck was back to running smoothly.
Just walked outside after dinner to see if it would still perform well, or if it would idle poorly again, sure enough, 6 contribution, rough idle.
I just changed fuel filters with OEM, air filter is new. I just cleaned the EGR valve- although maybe it's not clean enough?? Oil change is tomorrow (had to wait for the filter to get shipped in).
I'm at a little bit of a loss on how to cure this miss, unless it's possibly an oil pressure issue from bad/old oil causing it?
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The drip pan under my 2005 X 6.0 was relatively full with coolant last week. The leak is intermittent, but persistent. After investigating, it appears to be coming from somewhere on the driver's side on the back of the engine. The coolant is running down the seam where the transmission mounts to the block, but I can't get my mirror back there to see exactly where it's coming from. It's not coming from the side of block and there's no evidence of coolant on top (in the valley).
I've only been doing "city" driving (no towing or highway trips) since before the leak began and the max ECT I've observed is around 205*, with 40-60* ambient temps. It's not overheating, but I have noticed the heater air is cool when I'm at a stoplight, suggesting the coolant level is low (I've refilled coolant once and heater worked fine afterwards).
I have not observed oil in the degas bottle, but have not yet checked the dipstick for coolant bubbles in the oil. Also, FWIW, I had to replace my degas bottle back in October after it cracked on the side. I do use ELC free, red coolant, have a coolant filter and flushed the system about 18 months ago.
Thoughts on source of coolant leak? Don't say head gasket....
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Well, after getting the bed back on my '05 F350, I have been driving it on the road for a few days, but now I have a new problem.
Every once in awhile I get lag off idle for about a second, then the turbo spools and everything is fine. Other times, I step on the accelerator a bit from a stop, and the truck acts like its going to die for a moment, a puff of black smoke, and then the turbo spools and all is back to normal. It a combination of these two problems happens about 3-5 times out of 50 stops a day.
I have a scanguage and everything looks normal and I never get any codes when I check.
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I have a 2005 F-350 Lariat, FX4, CrewCab, with an 8ft Bed if any of that matters. Currently sitting at 191,000 miles and 4,500 Engine Hours I just started running into some issues that I cannot figure out. To start with here is a list of all the mods and prior maintenance that I've done to my truck over that last 6+ years that I've owned it.
I purchased the truck in 2010 and had no issues whatsoever for the first 3 years.....then it all started. While pulling a camper home from vacation "still bone stock" the truck overheated and by the time I realized it it was to late. I ended up blowing a head gasket cracking a head and blowing a hole in my coolant reservoir from the heat & compression of the engine in the coolant system. So to the shop it went.
All of this was done at the same time at just under 4,000 engine hours:
1) Both heads were sent out to be pressure tested "which is where the crack was found", so 1 replacement head and the other trued up and tested by the machine shop
2) All 8 injectors replaced with Airtex/Wells New/Reman
3) ARP Head Studs
4) BPD EGR Cooler
5) New Stock Coolant Reservoir
6) New Stock Oil Cooler
7) Motorcraft Coolant & Oil/Oil Filter Change
8) New Serpentine Belt
After getting the truck back I installed some upgrades that I had wanted but didn't want to do until I had head studs. 4" Turbo back Diamond Eye Performance exhaust, Bully Dog GT Tuner with an EGT Pyro, coolant changed to Caterpillar ELC, Sinister Diesel coolant filtration system, new Optima batteries "I hated them",
Forward a year with no problems I had a crank but no start. I ended up having a bad IPR. A buddy rebuilt the turbo since I had it out and it was leaking. He apparently did something wrong because it took its own life sometime after. So a brand new stock Garrett Turbo with a Wicked Wheel 2 & I changed the IPR "don't remember the brand." Also replaced the factory paper air filter with a cleanable one from AFE that fits in the factory cold air intake.
Little more time and I started to have some overheating issues again, luckily the Bully Dog was monitoring and I had alerts set up so I caught it way before it caused any serious damage. Turned out the fan clutch wasn't working. So I replaced the Water Pump with one from dieselsite.com that has a steel impeller, also replaced the computer controlled fan clutch with a 7.3L mechanical fan clutch and an adapter from BPD.
After that the batteries I hated were replaced. I installed Oddssey Extreme 950CCA ones, a new 185A alternator from FICMRepair.com as well as the complete battery wiring interconnect kit. Did the blue spring upgrade. Replaced my FICM with the BPD 6 phase at 54V setting. Also I changed my starter to an 6.4L Ultima one from O'Reily Auto to bring me up from that slow crank of the 6.0L at about 150RPM to the 225RPM of the 6.4L.
So now on to the current issue. This has happened in the last month and may be related to the issue. I had some small coolant leaks and wanted them fixed. Pressure tested the system & found the radiator and timing cover gasket leaking. I installed a new stock radiator and lower radiator hose. Had the shop do the gasket and a serpentine belt due to cleaners being all over it. During replacement of the timing cover gasket my mechanic found that the LPOP gears had some damage as if something had be in there at one time. Not sever damage just minor. LPOP replaced with brand new one from Ford.
After I got the truck back it was fine for 2 weeks, no leaks or any problems whatsoever. Then I noticed a hesitation as I was leaving work at idle. You could see the RPM's moving up and down by about 50 as it sat there at idle. It got really bad and eventually stalled on me. It fired right back up and ran fine after. I was thinking water in the fuel or just maybe old fuel because it was kinda old and I was at 1/4 of a tank. I went and filled up and it ran great all the way home. Day or so later same thing. At idle you can see the RPM fluctuating and while driving it feels like it has no power at times then it goes away and runs fine. So I changed both fuel filter with Motorcraft ones and put in a new oil filter. It is the Wix brand but I've be running it for years with no issues, one was also in it way before this issues started. The oil has about 2,000 miles on it currently. I verified fuel pressure at idle to be at 70PSI. I tried unplugging the ICP at idle with no change in the hesitation. So I plugged in my SG2 and started to see if I could see anything out of the ordinary.
OAT - 60 Degrees F
KOEO Engine Cold - FMP - 54.5V, ICV - 0.25V, ICP - 0, IPR - 14.9
KOER Engine Warm - FMP - 54.5V, ICV - 0.82V, ICP - 576, IPR - 23.5
Cruise at 40MPH - FMP - 54.5V, ICV - 1.14V, ICP - 965, IPR - 32.9
Cruise at 50MPH - FMP - 54.5V, ICV - 1.42V, ICP - 1,190, IPR - 38.0
Cruise at 60MPH - FMP - 54.5V, ICV - 1.27V, ICP - 1,143, IPR - 37.2
While driving this issue comes and goes very randomly. The only parameter I notice changing alot is the IPR. It jumps around a lot and sometimes it will go to 85. I know that this isn't a good thing so I am going to change the IPR later today or tomorrow. I already had a brand new Motorcraft one to put in, plus at the very least I want to look at the screen. I had read somewhere that there could be air in the oil system and that if you run at a high RPM it can remove this air. I never seen any bubbles or anything on the dipstick. My brother ran the truck for me at 3,000RPM for 5 minutes. No hesitation during the test but he didn't have the SG2 plugged in so I don't know the parameters during the test. I thought that it worked but then it came back after a few miles of driving. The above parameters are from this mornings drive home from work.
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05 6.0 deleted and studded. 170k fresh filters and oil, no CEL or codes.
This has happened 3x in months, so it intermittent. Truck will start fine cold, except for this last episode ....
Truck starts right up, idles correctly, speed bumps up if its cold enough to trigger the high idle. About mid way through its warm up, at approx 130-140 idle falls off, barely runs. Almost knocking. Black smoke if you give it throttle. Has no power when its doing this. Truck will not move and almost dies in gear. Give it til 185ish degrees then pooof! All good.
However 2 days ago it wouldn't start. Cranks but won't catch. Stumbles and dies. Finally got it to start after setting the charger on it. I killed it. But this time when it started it was straight into its rough idle, no power...until about 180. I switched it off, restarted it and it was totally fine
Ficm is 47-47.5. Every now and then I see a 46.5 for a split sec
Hpop is 700-800cold cranking.
Not sure what else to look at.
Moto craft filters.
Amsoil 5w-40
Archoil in the fuel and oil
Twc3 at every fill up.
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I have an 05 Excursion that has a rebuilt stock turbo on it, installed before I bought the truck. I installed a 3.5" downpipe/4" after exhaust with no cat and no muffler about a year and a half ago. It seems like suddenly my truck is whistling a lot more than it used to at idle. I'm not unhappy about the whistle sound, just wondering if this is possible (i.e. turbo vanes sticking or something else) or if I'm imagining things.
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2005 6.0l - codes are P0261 Cylinder 1 injector circuit low. PO263 Cylinder 1 Contribution/balance and PO270 cylinder 4 circuit low. Ficm still reads 48 plus or minus .5. What is really puzzling is how changing the oil cooler and the EGR cooler would create these problems. Did I screw up the injector harness. Vehicle does not smoke either white or black. Low idle miss and at 55 it chugs once up to speed. Don't want to go Ford if I can avoid them. Whats going on.
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My truck is a 2005 f350 6.0, all stock except for an egr delete and 4 inch cat back exhaust. I recently did an oil cooler replacement and egr delete, resealed all 8 injectors, and fixed some wire chaffing at the FICM. it's running great with the exception of idling. It seems like it's idling low but the gauge stays at 750. If I hit the high idle switch, it does fine. Red lights are stressful because it shakes and sounds like it's going to die but never does. I'm posting screenshots of my Torque pro.
I have a SC2 as well but I honestly like Torque better so that's what I use most. I know my ICP is low, but 8 don't know why. No oil in the connector, and no change when I unplug it. The ICP sensor may be a month old with 1000 miles on it. This was taken at a hot startup, sitting in park. When i say hot, I mean I had driven about 60 miles. This is sitting still in drive. ICP voltage finally climbs over 1.0 when i get going about 15mph at around 1250 rpm. The second pic the ICPV is actually higher than normal. It usually stays at .8 until I give it gas.
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A while back my 05' f350 6.0 was having rough starts and an erratic idle. It died coming up to a stop sign it started back up after 2 cranks and then it did that same on the way home. The next day leaving work it wouldn't start. I knew i had a couple injectors on the way out so i decided it was time to replace all 8 upon tearing it down i noticed my oil cooler was leaking so i figured it was time to rebuild that and finally do the egr delete that i had been wanting to do. well i put it all back together and got a no start.
The dash gauge on my oil pressure is reading normal when i cranked it so i went and bought a scangauge2 to read the icp its hitting 1500psi when i crank it. The ipr% is reading good. But my ficm main power is at 26v with the key on then it drop to 14v while cranking and eventually down to about 9v. Its never at the 48v that its suppose to be at. The scan gauge is also showing that my ficm sync=0. Would the sync be showing 0 since the ficm is bad? My batteries are fully charged and i have both of them on the charger while I am cranking it.
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Rough idle I have had for little bit.Would stall out at idle or a stop, but fire right up? No one could figure it out with the stalling, but now its bad, started yesterday. Have white/blueish smoke sometimes, ( white smoke smells fuel) on restart after warmed when it dies, first time it took 25 mins to restart, now only takes 5 to 15 mins, when I step on it INCREDIBLE full power, fuel mileage gone to hell also since yesterday. Had full tank, now 1/2 tank.
No problems on cold start at all, no check light, 325,000 and never had this before.
Bad fuel?
ICP?
FICM?
Recent work, new turbo, ( turbo was original turbo installed when built) cooling line to waterpump, oil change, new fuel filters, front brakes and 2 new batteries.
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I have a 2005 f350 6.0 power stroke. I had a crank no start when hot issue. I bought an obd scanner with the torque app. IPR was at 85%. ICP pressure was low. I got the IPR out and bought a new screen because it was clogged. Upon putting in I broke the injector female side plastic connection.I bought the injector connector piece and installed it. After putting everything back together it starts but runs very rough,low power. The IPR was fixed. ICP,ipr and ficm are at good levels now.
IPR=14.7%-30%
Fcim sync=1.0
Fcim voltage=48.5
ICP pressure (idle)650-850psi
My fault codes are:
P0672 (glowplug)
P0674 (glowplug)
P0678 (glowplug).
Why it would be running/idle rough?
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Well my problem went from bad to worse. My 05 started running rough at idle, then smoothed out a bit but started smoking on acceleration a little. At this point it felt like it had more power than ever before and even ran smoother running up to 3k RPM before shifting (manual transmission). But now it's smoking so bad, I can't really drive it. It's smoking white or gray at idle but blowing black smoke on acceleration. I had a cylinder 5 contribution code but with the amount of smoke it's hard to believe only one injector is a problem. I pulled the EGR valve and it doesn't look stuck open but I'm going to replace it anyway.
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Drove the lady's car out on some errands today and ran into a problem on our drive home. Car was pinging really bad (low rpms in 1st and second) and car seemed as if it couldn't get out of its own way. Was driving for some time on the freeway (after a blistering 0-60 time of 20 seconds ), and noticed that the brake pedal was really spongy (felt like a mk1 when you try to brake with the car off). Found that the e-brake handle was up (negligibly up (perhaps 1mm raised)). Didn't have power brakes at all and had to use a lot of engine braking to slow the car off of the freeway.
Rear of the car smells like copper (wet pennies) and found that the brake reservoir is cracked (but fluid still at max level). Also noticed that as of late, when the car is at a stop (sometimes in gear, and sometimes in neutral) the car will rock/bump a little almost as if someone were giving it a bumper kiss with their car.
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Ok I have an early 2004 F250. Recently changed out the #8 injector and then had to replace the ICP Sensor. Was running great then while driving down the road just died all of a sudden. Would start right back up with no issues. Continue driving and I am getting intermittent power loss. Also noticed that when it would lose power suddenly the glow plug light would come on.
Codes are P0102, P0113, P0272, and P1000.
P0102 Mass or Volume flow circuit low input
P0113 Intake Temp circuit High input
These are just soft codes not setting a light off. MAF is plugged in and I will check wiring here later after work but could this be causing my intermittent issues?
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Been having an issue every once in a while for the past 3-4 weeks.
Truck will not start when cranking sometimes (has happened 4 different times as of today), then I will stop cranking, and retry and it will fire up.
Of course when I try to replicate the no start, it won't replicate. So from here on out I will make sure my Torque Pro connects to the BAXF before cranking.
I know to look at the HPOP psi number.
I need to know the other parameters to look at during cranking. I am suspecting the STC, dummy plugs, or stand pipes with a leak by or drain down of oil.
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I have a 2004 F250 4x4 with 204,000. runs great! But last year, I noticed the A/C would work fine to begin with, but after running down the road a bit, it would cut off and I would have to turn it off, let it "rest" a bit, then it may or may not come back on, now I am a electrician by trade, and I figure it is a bad switch somewhere, but a intermittent problem is heck to find sometimes!!!
I replaced the low pressure switch in the accumulator, then I was thinking the little wiring plug might be bad, so I replaced that but it's still doing it. I was going for the relay next, but I'm not sure which one it is and can't seem to find a wiring diagram for the system. I'm stumped on which way to go. Its full of 134a and will freeze you out--- when it works!!
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