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Old 04-10-2013, 02:55 PM
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6.0 No Start

Hey Folks. Always been a great help here. The No Start sticky’s are great, I'm just hoping to get to my problem a bit faster, so thanks in advance for the patience responses. 04 6.0 with 155k. No slouch to mechanics and spent dozens of hours under the hood on this one since 2005.

Wife called for rescue after the Excursion just died and coasted of the road.

Battery's awesome, engine turns over fine/normal, just won't fire...not even a hint. Cold engine start has been great all winter, so I don't suspect GP's. Been running fine for along time.

Already rebuilt the FICM and its putting out 56.6v at both key-on-engine-off and at Start/crank.

New EGR last year (but didn't need it).

Manifold cleaning last year, but no indication of power loss.

Edge Juice/Attitude pulls only a P0275 contribution code for #5, but been getting that one off and on an off for years.

3/4 tank of fuel (duh) and no reason to suspect fuel quality at this point...unless water.

Thats about as far as I am on the sticky.

More direct suggestions?

Thanks for help folks!
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Old 04-10-2013, 03:18 PM
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What is your hpop pressure? I think it has to be around 500 psi to start. Maybe a ICP problem. Sorry not much help but a place to start.

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Old 04-10-2013, 03:27 PM
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Always a help rdaffin! Thanks! Hpop must be the pressure in the rail...??? My Juice does not give me that so it would be a manual check. Whats the proceedure?
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Old 04-10-2013, 03:31 PM
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Get a scanguage or torque app and see what the IPR and ICP readings are. You can also disconnect the ICP and see if thats the failure, ECM will default too 500 psi and if thats the failure the truck will start.
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Old 04-10-2013, 03:37 PM
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No manual test that I know of. The ICP sensor is on the passenger valve cover towards the front.

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Old 04-10-2013, 03:44 PM
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Thanks guys...I'll give the ICP a test tonight after work.

PHYRMN.....which of these "torque app" are availabile to download for a laptop? Probably need OBT2 cable too, yes?
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Old 04-10-2013, 03:53 PM
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Under the "monitoring your 6.0 " there is a voltage reading in the first post for the ICP. Should be at .82 at idle and cranking . .2 key on engine off.

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Old 04-10-2013, 03:56 PM
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Torque app works great on my tablet, you just need a cheap ebay obdII bluetooth module. A scanguage is gonna cost upwards to 160.00. One of these is a must have to monitor the engine senors.
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Old 04-11-2013, 08:21 PM
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Ok guys. Made some time tonight. Checked all the fuses and relays…all good. Swapped the #302 and #304 relays…no change. Reset the fuel cut off switch....didn't seem to be tripped. Unplugged the ICP..no difference. Checked the water drain, only got a very small amount of water. Changed both fuel filters. Both pretty clean and no contaminants observed.

Oil pressure seems to build pressure after about 15 seconds of cranking. The gauge spikes to normal for a moment, then drops back off.

Need to check the refill on the upper fuel filter tomorrow, but fuel pump is running like normal, so I expect that will be fine.

The general rule is “When there’s no obvious cause, the simplest solution is the solution.” Given the Excursion was running great minutes before it died, I suspect a “simple” issue here, but I’m not seeing it yet.
Will have a scantool on Saturday.

Any other ideas?
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Old 04-11-2013, 11:10 PM
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Are you running OEM oil filter and filter cap? I'd start there after what you said about your low pressure slowly rising then dropping again. If that's not it I'd suspect hpo leak somewhere but it's like a needle in a hay stack without a monitor or autoenginuity for your laptop. Btw the torque app is for android devices only so if you have a iPhone it won't work.
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