Ford 6.0L Power Stroke Diesel :: Intermittent Surging / Rapid Idle
Jul 26, 2015
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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I was driving my 2011 the other day home from work and experienced a rough idle. Normally the truck idles pretty smooth. I noticed when I was driving at highway speeds the truck seems to shake a lot. I pulled over and turned the truck off. I did a walk around and could find anything out of the ordinary. I started it back up and no more rough idle. However while i was driving at freeway speeds I could feel a momentary lack of power, then the truck would regain its speed. This would only last a sec or two.
I figured I'd give it a few days.... well now its gotten worse. Its doing the same thing but a noticeable difference in the lack of power. I still have boost pressure and the turbo seems to working fine. Im trying to figure out what it might be. I'll be taking my truck into ford again...
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Just bought a 2006 F250 with 6.0. A week or so ago, it surged once at idle at a light. Sort of felt like someone bumped into your rear. It has gotten more frequent over the last week or so. Now it does it often. It tends to rev up and then back down again over and over. Then it will clear up again. My brother said his 7.3 used to have a similar problem (as did quite a few others apprently) and it was the Cam positioning sensor (CPS). Where is it located?
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A few weeks ago i had a surging idle issue very intermittently, and it went away for a while so i stopped thinking about it. Just got back from a weekend in vermont, about 130 miles each way, and i noticed as soon as i got to vermont and came to a stop sign it was surging, and when i just got home it was surging again. Why would this have picked back up after long stretches of running for a while? Runs great as far as i know, just have this surging idle for some reason.
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So any ICP sensor been proven bad but i was not leaking oil? The symptoms of my truck sound similar to a bad ICP...fluctuating idle, surging, stalling, but it does run and start. IT tends to start acting up when it hits operating temp.
I have an 04 and the ICP sensor is in the easy spot to get to on the valve cover vs under the turbo (that's awesome) so its an easy swap. but just wondering if there is any way to test it over simply swapping it. I do not have a monitor yet but a dongle is on order and will get the torque app for my tablet.
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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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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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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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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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Just replace the b solenoid in my transmission last night; everything running good now, but for some reason it started doing this weird thing where if I come to a complete stop at a red light, then ease into the throttle, it will start surging,bucking. If I give it a little more gas on the pedal it will smooth out though. It only does it if u ease into the throttle after a complete or near complete stop. What's going on?
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I have a 6.7 diesel extcab longbed 4wd with the 3.31 rearend. I have been experiencing a surge primarily told by the boost gauge when using the cruise control unloaded and either or both going up a steady climb in elevation or headwind. It does not surge if I shift down to 5th. Does not occur pulling a load. Still occurs in manual mode and tow-haul mode. Does not occur if your controlling throttle with your foot. I find that it happens at speed of 65-70. It will boost to about 10 pounds then fall to about 3 and will continue this until maybe a hill or change in direction. It does not occur with a tail wind. I took it to the dealer today and ford had a new flash for the pcm and the tcm. Hoping that this would fix it but I don't believe it did.
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I'm getting some light surging while under acceleration. None at idle or once in overdrive. I cleaned out by exhaust back pressure although it wasn't really that dirty. Thinking about replacing the sensor anyway but it is a little pricy to just buy for no reason. Should I look for anything else? And where I'd the best place to get one? I've seen the 20 amazon ones or over 100 at the parts store.
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I have a 2007 f350 6.0, just replaced the oil pressure sensor in January, now, my truck is surging like crazy! I heard it could be the ICP sensor, how easy is this to change? And where do I find it if this is the problem!
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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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I was wondering about same turbo problems that I'm having? When running in cruze only at 55-60mph the turbo will surge from 2-12 psi up and down repeatedly. It sometimes will level out for a couple seconds and then continues to do it. I had it to the dealer and the service manager drove it and said it seems like it's searching for something, but since there was nothing from ford about it he couldn't do anything about it. There was an update for a prior serial number but my truck has the current software. What kind of damage is this going to do. It sucks because alot of my driving is at this speed.
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My '03 7.3 is "surging" on idle. When warmed up, and idling, the RPMs will drop by 300 or 400 for a few seconds and then will correct and shoot back up. It cycles like this (every 5 seconds-ish) continually . I just put in a new IDM and checked the UVCH - is there a separate idle control mechanism that I need to have a look at? (2003, 7.3, 214K, stock).
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I have an early 99 F-350 with 268K miles. It is bone stock right down to the factory exhaust. A couple months ago I started have a rough idle and surging while driving problem. I never got a check engine light but I borrowed a scan tool from a friend and pulled the following codes: P1690 (wastegate solenoid), P0381 (glow plug circuit malfunction), P0269 Cylinder 3 Contribution/Balance Fault, and P0284 Cylinder 8 Contribution/Balance Fault.
I did some research and everything I read said it was most likely the CPS. So I changed the CPS. The truck ran fine for for a few days but then it started acting up again occasionally. I noticed that most of the time when it acted up was at start up when the engine was cold and I also figured out that if I shut the truck off and re-started it (sometimes I had to do it 2 or 3 times) it would clear up and run normal.
A buddy of mine that has a 2000 F-250 said he had a similar problem with his truck and it ended up being the ICP sensor. We switched his ICP with mine and I changed my oil at the same time (because it was due for an oil change). My truck ran flawless for over 2-weeks (over 200 miles) so I put a new ICP in my truck. Note: my buddy did not experience any problems with his truck with my ICP in it.
I've put about 700 miles on the new IPR and the truck has started to act up again. Once again shutting the truck off & re-starting it will clear it up and still no check engine light. I took it to a local "diesel specialty shop" while it was running rough and they hooked it to their scanner and got P1280 (Inj. Control Pressure Low), P1690 (Wastegate Solenoid Fault), P0381 (Glow Plug Indicator), P0269 Cylinder 3 Contribution / Balance Fault, and P0284 Cylinder 8 Contribution / Balance Fault.
They never did anything other than hook it to a machine & check the codes but their diagnosis is my High Pressure Oil Pump is going bad and my #3 and #8 injectors are going bad. They recommended I let them replace all 8 injectors and the High Pressure Oil Pump. The problem I have is they can't give me a REASONABLE explanation as to why re-starting the truck a few times clears up the problem.
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A few weeks ago I got in my 2005 EX and started for work. As I idled in traffic, the engine started surging (it had never done this before). So I took it right to Ford and dropped it off before it got worse. Of course, they couldnt look at it until Monday (this was a Thursday), so I had to get a rental.
I get the call on Monday that the surging problem was an injector, but covered by my warranty. But, it seems that my EGR cooler was bad, but even more important was my blown head gasket.
WHAT?! My truck did NOT have a blown head gasket when I dropped it off. But thats besides the point. There was much back and forth between Ford and my warranty company, but finally I got them to cover the head gasket.
But, I had to pay for the EGR cooler. So I asked the Ford mechanic if I could supply him with an upgraded cooler, so I wouldn't have this issue in the future. He said no problem. I then told him I was going to buy a Bulletproof and he said no, get a delete kit. He said "I've done a number of these, and its really the best solution.". He even HEAVILY recommended the ADT Delete kit. He even said that since I have a 2005, we can just leave the EGR valve hooked up and I wouldn't have a CEL issue.
Fast forward several days. I picked up my EX last night and... CEL is on. I called and spoke to the mechanic and he told me that I must have an upgraded program, and that my only option is a tuner to turn off the EGR completely. He also told me that I don't need an expensive SCT or Bullydog just for the EGR.
Anyways, with all of the above setting of the stage complete, just wondering what my best option is here... Is there a simple/cheaper tuner I can use to just disable the EGR? Is it worth the money to get a more expensive tuner? For the most part, this is my daily driver and I don't need a performance or towing tune. I wouldn't mind better mileage, though
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Ok I have a 2004 f250 6.0L, has 104k on it. A little back story... truck was running well when I started to get surging on takeoff and it was blowing black smoke when it surged. After it hit 1600 rpm it would blow out and run normal. So did some research and found it could be the FCIM, I have the 4 pin and tested it and had 48.5v so it tested good. Did some more research and found symptoms leading towards the ICP so I replaced that and the ICR also.
Upon doing this my surging issue cleared up but now I'm getting a miss around 1200 + rpm weather it's in park Reving it or driving, but it is not throwing any codes, I did check with my code reader. I have also changed both fuel filters and have the EBP sensor on order as I hear they can be troublesome. My question is what should I do next or look at? I was trying to avoid the dealer so I can learn more about the truck in diagnosis.
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I've been noticing some weird, very subtle engine sound changes while driving at highway speeds lately. Something almost like surging, but not. I don't know how to describe it. I might try to make an audio recording next time I take it out so I can explain it.
Anyway, I don't know why but ICP popped into my head. Maybe, for some reason, the engine was varying ICP causing the surging sounds.
So I hooked up AE and did a test. I've attached a screen shot.
With my idle speed actuated as high as it will go, and ICP actuated as high as it can go, I can only get a pressure of about 1450 PSI. I always thought ICP should go higher than that. I seem to recall reading somewhere around 3600 PSI.
So am I misinformed, am I reading the data wrong or do I have a problem? How high should Injector Control Pressure go? I missed it in the screen shot, but ICP is actuated to 100%.
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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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