05 6.0 running problems - Ford Powerstroke Diesel Forum
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post #1 of 8 Old 10-15-2013, 09:18 AM Thread Starter
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05 6.0 running problems

Ok my brother has an 05 6.0 with SCT tuning. When he is driving it the engine will sometimes slow itself down even though the throttle position stays the same. Some times when going to accelerate the truck won't go until after 20% throttle is applied (according to the edge insight). He is also getting a code that says the FICM is out of sync. And after driving for a while the truck will crank and crank but won't start unless is sits for a while. FICM voltage is good too. We have no clue what could be causing this and he just bought a house so he doesn't have a ton of spare cash to throw at it to change parts. Any help would be greatly appreciated.

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post #2 of 8 Old 10-15-2013, 09:50 AM
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I would check the high pressure oil...
Sounds like his pumps might be failing. Mine did that when I was slowly loosing HPO. It would take more throttle to do the same amount of work.

Then it died while driving because it just lost pressure.


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post #3 of 8 Old 10-15-2013, 09:50 AM
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Check the ICPv on the insight


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post #4 of 8 Old 10-15-2013, 10:01 AM
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As long as you have no sync the FICM will not fire the injectors.


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post #5 of 8 Old 10-15-2013, 11:03 AM
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Quote:
Originally Posted by I_AM_RP3 View Post
And after driving for a while the truck will crank and crank but won't start unless is sits for a while


This a a VERY common symptom for a High Pressure Oil Leak. I bet this is an issue, even if it's is not the only one.

But yes, check the FICM for issues including the connections.



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post #6 of 8 Old 10-15-2013, 11:55 AM Thread Starter
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Thanks for the fast responses. He said his insight doesn't show ICPv but does show pressure and it always stays between 550-600 and never drops.

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post #7 of 8 Old 10-15-2013, 11:57 AM
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Originally Posted by I_AM_RP3 View Post
Thanks for the fast responses. He said his insight doesn't show ICPv but does show pressure and it always stays between 550-600 and never drops.

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At idle? What about cruising? WOT?




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post #8 of 8 Old 10-15-2013, 12:27 PM Thread Starter
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I don't have values for those, he just said they consistently increase with the RPM's

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