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Old 06-06-2013, 05:28 PM
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6.0 died while driving and just cranks

Hey guys. So i have a 2003 f250 6.0 and it died while i was driving home from work. (To give some back ground on the truck, it would always take forever to start in the morning but it would start after the 3rd or 4th crank.) So when i got it back home from towing it, i hooked up the code reader and no diagnostic trouble codes were detected. So after talking to some guys, they told me to check the ICP and the CMP. So i unplugged the ICP to default it and see if the truck would start but no start. So i went out today and i got a brand new CMP and still no start. I noticed today after cranking 4 times(5 second cranks) on the 4th crank the oil gauge bounced up from its resting position. So this informed me that it is have problems building pressures. What do you guys think and please help me asap bcus im about to run this truck off a cliff, ive had nothing but problems.
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Old 06-06-2013, 06:31 PM
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Welcome!

Check means put a monitor on it to see the values. Read the no-start sticky. Borrow or buy a monitor (Scangauge II or similar/better) and report back with values for:
ICP during crank
IPR during crank
FICM voltage - high and feed

If that is good, check the SYNC for CMP and CKP. Just keep moving away from the most likely problems for this type of failure.

There is a diagnostic sheet to follow in the 03 Coffee Table Book. If you fill out all the tests, you will know where to look next.

If you are not willing to do this as a minimum, have a shop diagnose the problem. The short cranks will generally not raise the low pressure oil enough for the dash gauge, that is why you are seeing it as you are. BTW, the dash gauge is almost useless as a diagnostic tool, unless you can determine the actual pressure via an external gauge.
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