6.0 wont start

[Peppy]

2004 ran fine shut it off Now it won't start, fuel getting to the filters scan tool says when cranking ipr 85% 2100 psi ficm sync yes logic volts and batt volts both at 11 (after a fair bit of cranking) and 47.3 volts out, 173 rpm cranking after koeo self test revealed high voltage codes on all 8 injectors any ideas?

[GoFastPadre]

I hate to ask but did you check the oil level in your HPOP?

[m-chan68]

Originally Posted by GoFastPadre

I hate to ask but did you check the oil level in your HPOP?

This is a 6.0L truck, not a 7.3L.

[m-chan68]

Originally Posted by Peppy

2004 ran fine shut it off Now it won't start, fuel getting to the filters scan tool says when cranking ipr 85% 2100 psi ficm sync yes logic volts and batt volts both at 11 (after a fair bit of cranking) and 47.3 volts out, 173 rpm cranking after koeo self test revealed high voltage codes on all 8 injectors any ideas?

Usually when IPR duty cycle hits the roof at 85% during engine cranking, it means you have a high pressure oil system leak or lack of sufficient supply issue causing your no-start. Is that 2100 ICP psi, or 2100 ICP psi DESIRED?

[Peppy]

Both mesured and desired psi are at 2100

[m-chan68]

Originally Posted by Peppy

Both mesured and desired psi are at 2100

Okay, then Injector Control Pressure is NOT the cause of your truck not starting. How about FICM SYNC and SYNC? Do they both switch from 'NO' to 'YES' during engine cranking? If so, I would lean towards your FICM as the cause, despite FICM_M being well within specs. For what it's worth, I had one truck awhile back as a no-start that threw three hard codes for injector circuits HIGH on three cylinders, no P0611 or injector circuit LOW codes, as is usually the case when a FICM goes South. If you can borrow a FICM off one of your buddy's to plug in temporarily to see if it starts, that would verify it for sure.

[Peppy]

Yes both sync and ficm sync go to yes when cranking, does it matter what year ficm I get

[m-chan68]

Originally Posted by Peppy

Yes both sync and ficm sync go to yes when cranking, does it matter what year ficm I get

NOPE. All FICMs are the same for all 6.0L engines from 2003 up to 2007, be it an E-Series or F-Series. Just bear in mind you can swap one from another truck for TESTING purposes only. If swapping in another FICM from another truck manages to get your truck started, you will need to replace new and have it programmed to your truck. If swapping in another FICM fails to get your truck started, I would run a key-on/engine-off injector buzz test, with both your FICM and the donor FICM installed to see what happens.

This is all assuming that fuel pressure is verified to be within specs of course, RIGHT? Judging by your post, I'd assumed you'd have been intelligent enough to have checked already, but I thought I'd remind you anyways.

[Peppy]

Found a donor ficm and it fired right up, the ficm is from the same year truck and they are actually 7 days apart can I use this one until I can get another one or will this cause me further problems

[m-chan68]

Originally Posted by Peppy

Found a donor ficm and it fired right up, the ficm is from the same year truck and they are actually 7 days apart can I use this one until I can get another one or will this cause me further problems

I keep a spare "tester" FICM at my workplace strictly for diagnostic purposes. What you can TRY to do, is have the donor FICM programmed to YOUR truck to see if it "accepts" it, using Ford's IDS scan tool at the dealer. If it does, I suppose you can use it. Never having tried this myself personally, I can't comment on whether it will or not. Although, to be honest, I can't see that it wouldn't accept it. Nonetheless, I'm glad I was able to assist you. This thread is once again, proof positive that FICMs can fail in many different ways that will not always produce the exact same symptoms. This is especially true, given that yours was putting out a good FICM_M power that would easily have fooled a lot of others into replacing injector(s), even almost myself included at one time.