2005 6.0 Help ! Need ICP air test fitting.

[outbackwelding]

My 05 6.0 went down almost 2 weeks ago now. Drove home, parked in driveway and shut it off. Later went to restart, it'll crank until the batteries go dead, but no fire. Checked it with Genysis scanner, no codes, ICP desired was around 825#, actual was around 325#. Not enough to fire the injectors. Towed it into my shop and had a Tech buddy of mine come & recheck, then found desired pressure at 1125# and actual pressure at 1.75# ! Trying now to located an air test fitting to put in place of the ICP, so that we can pressure test the HPOP system for leaks. Found one on my Mac Tools truck, but it was $100 ! Anyone know where I can get my hands on one fairly cheaply ? Any help greatly appreciated, I miss my 6.0 !

[dannyboy950]

You can take an old sensor and cut the threads off and braze them to an air fitting.
O'reilly sometimes has them OTC tools has em as well. Some of our sponsers sell them as well I believe.

[worthingtonmedic38]

I was able to make one from hydraulic fittings from the local hose shop, but i don't remember how much i had in it... i like the cutting a sensor and brazing idea... are you able to command the IPR valve to max in order to test without tear down?

[outbackwelding]

I was able to get an air test fitting through my local Oreilly's. Which is due in Tuesday. I didn't have access to an old ICP & really didn't want to spend dough on a new one (if I didn't need to) just to be able to cut an ICP apart to make a fitting. Waiting on my Tech buddy & the air test fitting now.

[worthingtonmedic38]

that's good to know. what did you ask for? were they able to find what you wanted asking for a 6.0 air test fitting?

[outbackwelding]

I had actually found the part number directly from OTC. I had called OTC and was given a price that was not too bad, but I thought I could do better. Anyway you go, if you use the OTC part number 511671, it'll get you the 6.0 high pressure test fitting. All for around $15, shipping included.

[worthingtonmedic38]

Nice. Thanks for the info.

[outbackwelding]

Ok guys here's the latest. Using air test fitting, deterined high pressure system leak somewhere internal. Commandig IPR open and shut had no effect upon the leak. But, IPR duty cycle shows 15% key on, engine off. Upon cranking IPR duty cycle jumps to 85% duty cycle. As soon as cranking stops, duty cycle returns to 15%. I'm thinking bad IPR, thoughts? Also, in the scheme of the duty cycle, is it measured in % open, or % closed ?

[dieselkane]

Originally Posted by outbackwelding

Ok guys here's the latest. Using air test fitting, deterined high pressure system leak somewhere internal. Commandig IPR open and shut had no effect upon the leak. But, IPR duty cycle shows 15% key on, engine off. Upon cranking IPR duty cycle jumps to 85% duty cycle. As soon as cranking stops, duty cycle returns to 15%. I'm thinking bad IPR, thoughts? Also, in the scheme of the duty cycle, is it measured in % open, or % closed ?

I know it is off topic, but what did you use for your air test fitting?

[m-chan68]

Originally Posted by outbackwelding

Ok guys here's the latest. Using air test fitting, deterined high pressure system leak somewhere internal. Commandig IPR open and shut had no effect upon the leak. But, IPR duty cycle shows 15% key on, engine off. Upon cranking IPR duty cycle jumps to 85% duty cycle. As soon as cranking stops, duty cycle returns to 15%. I'm thinking bad IPR, thoughts? Also, in the scheme of the duty cycle, is it measured in % open, or % closed ?

You should be able to hear a change in the leak sound, with the air line fitting connected, as you toggle through the various steps of the IPR duty cycle with the scan tool. Another thing you can try, is to supply your own power and ground directly to the IPR valve to close it. If no change in sound is heard, the IPR valve is likely bad. IPR valve duty cycle should indicate 14.84% at key-on/engine-off and max out at 84.77% if there is a problem with building sufficient ICP to start the engine.