04 Died Running Cranks No start scanned with AE - Ford Powerstroke Diesel Forum
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Old 02-22-2012, 09:34 PM
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04 Died Running Cranks No start scanned with AE

So I have checked FICM voltage (48), scanned with Auto Enginuity and get p1000 OBDII system readiness and hybrid electronic cluster code U1262 SCPCJ1850 Communication Bus Fault. While cranking with IPC sensor plugged in I am only showing around 50psi actual and 1850 desired. When I unplug ICP sensor I am cranking at 1850psi actual and desired (within 3psi) but truck will not start. Also, when the sensor is unplugged it throws cam and crank sensor codes p2614/2617 and 2285 icp circuit low. The Ipr voltage is 14.84 then 80 plus when cranking. The ICP sensor is .23. The HPOP and ICP sensor have maybe 3000 miles on them. The truck was running fine and died when making a u turn and will not start. Them cam and crank sensors are brand new. I am new to AE and the p1000 code seems to be stopping the program from completing the initial system check. Could it be a bad PCM? I am really at a loss this time and cant afford to throw parts at it. Thanks for any help out there I really appreciate your time and knowledge. wish i had Fummins money. wont be able to check email til after work tomorrow so sorry for delayed responses, thanks again
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Old 02-23-2012, 05:50 AM
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hard to say RE: PCM, but you have a high pressure oil leak.

Many times the crank and cam codes come out due to extended cranking and no start. You are not making enough high pressure oil. The IPR is maxing out and still no HP oil. I am not familiar with the 04 oil system, but someone here will let you know where to start (probably an air test).


MikeB
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Old 02-23-2012, 05:52 AM
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Check the IPR valve screen for debris. Might even just be a bad valve.

When you unplug the ICP it defaults the PCM to preprogrammed values. So if it doesnt start with the ICP unplugged then the sensor is most likely good.
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Old 02-23-2012, 06:06 AM
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Generally a plugged IPR screen will give you high ICP. With the IPR going to almost full duty cylce like that making the greatest path of resistance the truck is trying to build ICP to fire off. Your going to need to pull your ICP and pressure test the system, check your stand pipes and dummy plugs. I have also seen the J-tube on top of the HPOP leak with the internal o-rings and cause no starts. Good luck!
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Old 02-23-2012, 09:42 PM
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Thanks for the info. I was hoping not to have to tear into the HPO system again, what a royal pain in the ***! I replaced the HPOP, sensor, and all related o rings when I was in there to replace a bad injector back in October. ALL injectors heads and such were replaced at 100k and im at 165k now. So when the sensor is unplugged the 1850 actual psi im getting actually isnt actual, but a preset from the PCM? Damn thought I was onto something. Any other tests on AE I can run to help pinpoint anything?
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Old 02-24-2012, 02:28 AM
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Your next tests should be a physical verification of what actual oil pressure you are getting. This requires installing a manual test gauge and rolling the engine over.

In your case there are enough indicaters that you have a high pressure oil leak, you could just go onto the air tests and find the leak.

Since inital shut down occured while makeing a u-turn I would have suspected you might have unseated a wireing harness plug at the FICM but you are showing to many indicaters of a High pressure oil leak.
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Old 02-24-2012, 05:41 PM
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is it a early or late 04
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Old 02-24-2012, 09:08 PM
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its an early build
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Old 02-24-2012, 09:52 PM
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Also the truck is showing no rpms on the tach while cranking. AE shows rpms around 170,buddy says he sees rpms jump up on his work truck while cranking. Just a thought. Im diving back into this thing in the morning so ill try to keep the thread updated with any news.
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Old 02-25-2012, 05:53 AM
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Have you checked the batteries? i.e. individually load tested them?

There is a no start check list (I think in the tech area). Maybe a good place to start.

MikeB
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