My truck is a 04 with an 03 engine F550 with 238,000 miles no mods. please bear with me as I try to be inclusive with details. For about 6 months now I have encountered an occasional die while driving,sometimes it will die while under heavy acceleration, sometimes under light acceleration, somtimes while cruising down the freeway at 65 or 70 mph sometimes when driving over slight bump in road turning left, sometimes multiple times while driving rough dirt road, sometimes driving lightly rough paved road, in general seems like it could happen anytime with no real pattern that I can detect. When the engine quits the glow plug light flashes on and there is not any acceleration until pedal is released and reapplied. I have searched the sight as extensive I could over the last few weeks, and I have found a few threads with like symptons. My go to mechanic has run the (IDS?)rotunda program with no codes showing. Symptons have gotten worse slowly over time. Last week he unplugged the EPS still had the same symptons. He also did the wiggle test replaced the harness from the ficm to the injectors with no improvement. this week he replaced the main engine harness he drove to my house tonight and he say it is very bad now and consistent died 10-12 times on his road (dirt) then complety die where engine had to be restarted on my road (dirt also) he will run the scan again tomorrow. he is thinking maybe a run relay? I am hoping somebody may have some additional ideas. Sorry for such a long post I am trying to give as much detail as I can. Thanks in advance for any help

 

update When I started the truck today it ran for about 30 seconds then died, restarted it walked away to let it warm up when I came back it was off again,restarted then tried to move the truck died when put into reverse, repeated starts and die while moving truck. parked truck and it was idleing ttried to do a wiggle test on the connections for the main harness when got to the FICM it died again good I think I have it figured out called the mechanic he came over did the wiggle test plug on FICM is tight and he can't not repeat anything consistently now sometime it will crank for 30 seconds before it starts may Idle for a minute or 2 or it might die right away. He will hook the computer up to it this pm.

 

did you test the ficm?

 

Mechanic was just here Seeems there is some sort of issue with the plug or the ficm he said there is a wire that loops around or out of that plug from the m,ain harness he can put his finger in what he called the crotch and most times it wil cause it to die he will be back in the am to pull the ficm loose and see if he can duplicate if it is in the connection the ficm or maybe a faulty harness. When he connected the computer it showed all 4 readings for the ficm are good

 

Well my mechjanic just left. he pulled the ficm and opened the harness hooked evrything up loose to see if he could find the bad wire or connection,Engine started nice and smooth no rattle 40*f he wigled and tugged and pushed all wires and connectors and nothing engine runs perfect no cut out doesn't die. take for a road test runs good no problems. Now the question is what changed?? Any Ideas ????

 

seems everytime youve gotten by the ficm the problem changes, or gets worse.id say something has chafed somewhere and is shoring to ground?.is your alt. in good shape?.

 

Altenator was replaced couple of months back seems strange to have problems with a new harness I thought that maybe something just didnt connect right and then when he removed things it straightened itself out just my.02

 

well here i am 2 days of work under my belt, truck started off running great nice and smooth Monday morning, then it ended up dieing out 3 times Monday and several times today . It is running the same now as before the harness was replaced , that certainly was not the source of my problems even though the ebp wires are broken and the IPS Plug was melted and full of oil, I figured there was probably more issues with in the harness. So now the mechanic is going to try Swapping a ficm that is known to work, and we will see if that fixes the issues. Was hoping one of our Techs might have some input if the ficm would be suspect for this. Is it possible that cracks in the solder would cause an intermittent issue?

 

The FICM could very easily be suspect, but it should throw a fault code/codes of some kind. The voltage is fairly easy to test. Check the FICM test procedure in the 6.0 tech folder at the beginning of this forum for info.

 

Thank you for the input npccpartsman and everybody thats has taken the time to help out will be testing again as soon as possible.

 

when I arrive home last evening I popped the hood to charge my aux. batteries and noticed one of my batteries was venting gas out of the vents took truck to mechanic this am to have ball joints brakes and exhaust gaskets replaced. He load tested batteries main was completely dead secondary was right behind it, will see if this if part of the problem and /or if I have killed my ficm also. After all the thread reading and knowing how bad batteries affect the ficm and Injectors, It did not occur to me that my batteries might be bad they are less than 2 years old. Good news they will be replaced under warranty. will keep posting as we continue to diagnose the problem.

 

04 F250 powerstroke 150000 miles. randomly dies, in park at idle and while driving down the road, I think its my cam senser? Any ideas.

 

with the random diing thing could be a failed injector, icp issues, ipr issues. 03/04 always also suspect main engine sensor harness.

 

So Here I am almost a month later, between work family obligations back and forth to the mechanics and more money out the door still have not solved the problem Last Week we installed a rebuilt FICM (mine) two days no issues, I am thinking alright we fixed it , then 3rd day it starts again dies multiple times Wed. night went to Autozone bought a scanguageII. I installed it thinking maybe I can catch a code before the main computer reset itself , but when it would die the codes where gone before the scII could scan them. Today We connected the IDS with the datalogger running took the truck for a 40 mile trip one way trying to repeat when it most often dies. got one hiccup on the return trip no codes burned another 10 gallons of fuel trying to repeat, nothing, Stopped to do some mothers day shopping and when I was pulling out of the parking lot it stumbled and almost died started running rough the data logger caught some codes I hope somebody can clarify them They are B1352 HEC Hybrid Electronic cluster U1261 HEC P0278-60 PCM cylinder 6? I think and P040-60 PCM has something to do with the EGR as I recall interesting thing is it has run rough since then. I should note in response to Cheezit the number 8 injector has not been contributing much for some time . I have been waiting to replace it thinking another would fail soon also since I have had multiple injector failures. Cheezit do you think a single injector would cause it to die randomly? and How can I throw codes for a Hybrid??? and would the egr and cylinder codes be a byproduct of the main issue or could they cause the problem? Sure would like to find the source of this problem thanks again for all who are trying to help

 

Hey DBS1 Cheezit helped me with a weird situation a moth or so ago. The truck wouldn't start with the ICP plugged in. Im thinking ok change the ICP and all should be well. Well it still wont start with the new ICP in. Turns out the #5 injector's bolts holding the spool valve had broken off and the injector was leaning just enough to arc and short out on the rocker carrier. When this happens it makes your ICP read bad and wont run or start. you may have a random one like this. Vref short cause intermitent failures. Anyway good luck to ya I will link to that post it has some good pics of the injector coming out in 2 pieces and you can see where it was shorting out.

Link to the thread!
https://www.ford-trucks.com/forums/1...-troubles.html