The ICP sensor looks OK its Value was Correct at KOEO

But it does Look like you have a HPO Leak or HPOP getting Weak

Do that test again But this timee Include IPR%

Tell us about oil filter and Cap are thesse OEM parts????????????????

 

yes and yes

 

keep in mind im running a custom tune and it seems to keep the icp lower...if i switch to stock, or one of the canned SCT tunes the ICP goes much much higher

 

Oh I got ya

Ya the Tunner will change values of certain things to produce more power

The Best thing here would be to RETURN Truck to Stock Programing and then take the Values

I have sensor spec for stock trucks

Return tpo stock would be the b est till you get it figured out

and We will throw out the sensor values you already posted take them again in stock mode

 

alright. letting it return to stock now

 

still seems low which is weird, i know it goes higher. is it because im in park with no load on it? on the highway ive had it like 3500+ psi

 

just went into dunkin donuts for less than 5 mins, came out and long *** crank again. don't think this is just a random thing anymore...

 

Yesw the numbers should be lower in park or nuetral because there is NO Load.
Its done this way to take the Load out of the equation because way to many varibles to take into consideration when trucks under Load.

This makes it so the Operating values are the same from one truck to the next

So ALL this^^^^^^Said your ICP looks High to me SHould have been in the 580 or 620 range IF THE TRUCK WAS AT NORMAL OPERATING TEMP so ECT&EOT Around 190* range give or take

Looked like you had an ICP of 689 or so thats to high at normal operating temp at Low Idel


And the Crank happened to fast to see ICPV at KOEO

The High Idel should be taken at steady 2500 RPM and I couldnt tell what rpm you were at when you reved it up it must be taken at 2500RPM for the High Idel reading to Mean anything


But Im am starting to think the IPR Silinoid is Bad Id pull and inspect it see if the screen has Junk on it or Been Pushed up inside the Valve itself

 

The last video the truck was not at full operating temp, and i could not hold it at 2500 rpm in stock for some reason. it kept wanting to shoot way up in rpm lol. also at KOEO it was still around .22

If it is the IPR that is good, somewhat, because i already have the IPR and socket for it in my center console lol. When it was originally just surging, that is what everyone was telling me was the problem. I was just curious if this random long hot start is from the IPR too??

 

If you make another video Pull these gauges up on the SGII screen
ICP
ICPV
IPR%
RPM

This way since it is surging you can pause the video around 2500rpm and see what up

Set the SGII Update rate to Fast

I know what you mean though its surging and Blows right by 2500 rpm

I still thinking the IPR could be the culprit its definatly worth a Look check the Screen and you can also Ohm the IPR Valve out with a DVM. But I suspect you will find a damaged screen on the IPR

Not to many thing will cause surge condition a HPO Problem or leaky inject or Overboost may cause surge maybe I missed something but I think those are the Main things

 

Well the surge is very intermittent, the only time its happened lately is when i drove 2 hours home from vermont and then when i drove 1.5 hours to help a friend. Lately its just been this random long hot start, it actally hasnt really surged at all

Tomorrow i will get it up to temp and make another video with those values. also we resealed all the injectors so i dont think thats the problem, and i dont think i have an overboost problem

 

The Inject can leak internaly past the Pintal

I dont think thats it though cause it would likly leak all the time and not just randomly

 

Thats what i thought... its so hit or miss i can go out when its still kind of warm and has been sitting and itll startup almost instantly, or i can go out and itll crank for 10-15 seconds before it starts. I wonder if this could almost be a wiring harness chaffing issue? Just so many things you can throw out at this thing.. also, no codes besides the ones ive had a while

 

Today was a really nice day (sunny, 60s) so we decided to try to replace my IPR. Got the turbo out, which turns out doesnt help at all really, only to discover that the intake manifold was precisely in the way of doing anything. I think i remember reading that the 2003 intake manifold wraps around on the back too, which apparently is true. So after i got the connector off, i reached down there to see if there was any way i could get the IPR socket i bought, or a wrench, on it...well as soon as i grabbed it the IPR moved. So yes, the ipr was completely loose. Someone had to have messed with it, because there is just no way that backs out by itself.

I was at a loss at this point, so i texted one of my friends who owns a diesel shop and primarily works on 6.0s, and he told me he'd replace my IPR and my oil cooler (needs to be done also) for $500 labor. That sounded like a pretty good price to me, and i have absolutely no desire to pull my turbo and intake manifold again

So thats how my day went...

the picture he sent me after i inquired about the different manifolds

 

yup you can swap to a later manifold