I will be working my way through the no-start checklist, but since I have some time constraints due to my work schedule and the summer heat, I was hoping somebody might have some tips to narrow down the issue more since it's not just your average no-start. By the way, it's a 2005 6.0 with no tune.

I was pulling my 5th wheel over the mountains the other day and noticed a loss of power all of a sudden. It was holding my speed very low even on the slightest of grades. No warning lights and all gauges were good, including oil pressure, fuel pressure, temps, etc. When I made it to the next town, it stalled as I slowed down for the first stoplight and has not started since. The tow 80 miles home with the 5th wheel on the back was not my idea of a good time...

I pulled the codes even though there was no CEL and there was one present: P2290 ICM pressure too low. Since this code doesn't throw a CEL, I'm not sure if it happened at the same time or not.

The engine will crank nice and fast, just won't fire. So far, I have removed the ICP connector and the no-start persisted. FICM is 48V according to the Scangauge II. I do not see any oil pressure registering on the gauge, so I'm guessing that it may involve tracking down an oil leak somewhere. I hope not, as that does not sound like fun...

Anyway, any help is much appreciated.

 

I would gather you have developed a severe HPOP leak or blown IPR valve. Neither one is what I would consider fun.

Not to be ignorant, but oil level is good etc... I thought the scangauge can give you readings for ICP and IPR? Probably the best place to start.

 

Sounds like a problem with the oil system. Suspect STC fitting. What does the SGII show for ICP pressure (with it pluged in and cranking), also see what your IPR % is reading while you are cranking it.

 

Thanks for the info. I will get those numbers. Are they built in to the Scangauge or will I need to enter the codes for them?

Oil level is good. Oil and oil/fuel filters changed about 2000 miles ago using Motorcraft/Racor filters.

 

I don't use the SGII so i'm not sure, but someone will be on here soon to give you the codes. I'm pretty sure you have to use codes to get to those anyways.

 

You'll have to enter them. Here are the codes:

ICP 07E0221446 046205140646 3010 003900640000 ICP PSI
ICV 07E02216AD 0462451606AD 3010 004827100000 ICP voltage
IPR DC% 07E0221434 046285140634 3008 0DCA03E8000A IPR %

 

OK, here are the numbers:

ICP: 110
ICV: 0.34
IPR: 77.6

It is warm outside. I worked up a sweat just programming those in and getting the readings...

 

time to test the high pressure system the numbers are low.

 

That's what I was afraid of. Is this the best guide for testing it (end of 1st post) or is there a better one somewhere?

https://www.ford-trucks.com/forums/8...condition.html

 

Yes that is how you will need to test the HPO system.

 

OK. Together with a couple of links that I found, I should have all the info I need to get in there. Looks like I need to get down to Ford and pick up a connector for the IPR valve.

 

Is a special adapter needed for connecting the air line, or is it just a standard fitting like you would use to connect an air tool?

 

I've never seen the thread size posted for the ICP sensor, but I know it's an o-ringed straight thread. If you have help you might try just using a blower nozzle and listening first. Using a piece of tubing for a stethascope makes it a LOT easier to narrow down a leak.

 

ICP thread size is M12 x 1.5.

You should get an M12x1.5 to a #4JIC fitting

 

So it's exactly like the fuel port thread. That's nice to know. Now I can air test my system before I put new injectors in since I already have the adapter laying around.