No start 6.0 mystery

[01lightning04stroke]

Truck had a no start condition one day just would crank. Spray the intake with silcone spray fired up. Few weeks later same thing and progressively over the passed two months slow got worst intil it would on longer start. Codes i had been getting previous were egr codes because its not there and a cam sensor code po2614 and #6 glow plug p0676. So the truck finally died replaced crank and cam sensors truck still wont start. I check the edge cst for codes and I get a po683 glow plug control module. Go to the dealer today bought a new gpcm and still get the same code no start. I noticed on the old gpcm the middle prong and the top row on the black connector was burnt on the tip and the plastic and the base was melted a bit. Its the blue wire with white stripe. Im not sure what to test or do from this point

[southend]

Glow plug has nothing to do with your no start, what year is your truck buddy? Is this a no start hot or cold or both?

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[01lightning04stroke]

The truck is an 04 early build. When it would catch it would fire up quickly.

[southend]

Your icp sensor may be the problem. Check for oil around the sensor, it is located under the turbo, the pigtail is prone to failure also on this model. You can disconnect the icp and see if it starts.

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[kaya@bernhausen]

a leaking icp sensor will usually cause a rough running condition. i don't think i've ever seen it cause a no start though. and i've seen icp pigtails that were completely melted, wires shorting to each other and it will still run.

op, when you crank, is there any smoke coming out the tailpipe?

[01lightning04stroke]

This is no smoke. This truck away ran great, with no issues just wouldnt start as sometimes and got progressively worst. During that time I was getting a code on 6 and the cam sensor code. Changed cam sensor and crank got a gpcm code and no start

[southend]

Honestly, without a monitor, we will be guessing what your problem is. http://www.powerstroke.org/forum/showthread.php?t=259257
Can you read icp, ipr% while cranking?

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[01lightning04stroke]

I have an edge cst I monitor with.

[southend]

See if you can get an icp reading while cranking.

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[01lightning04stroke]

I will when I get to the truck. Icp has been replaced in the past two years and pigtail