Low ICP? and P1211 code
 

Hey guys.. so trucks been acting funny, And finally got it hooked up to a scanner, this is what I get
At Idle
RPM:610
APP: .82v
ICP: 613
IPR: 15%
Inj. Pulsewidth: 1,6ms
MAP: 14.25
And this it at WOT all on extreme setting
RPM:27-2800?
APP: 3.67 / 4.17
ICP: 2300 / 2465
IPR: 38% / 39%
Inj. Pulsewidth: 3.6 / 3.9
MAP: 26 / 27

The second number was the second run we did.. both in 4th gear WOT

Questions are.. why such low boost? Due to the low ICP i'm hoping?

Sent Bill an email already.. but if its not solved with tuning, what can be done:shrug:

Mahalos for any info
-Patch

15% IPR at 613 PSI seems a little high to me.
I don't know what ICP Bill commands in his higher HP tunes, but the stock "desired" ICP maxes out at 2500 PSI anyway.

The IPR duty cycle doesn't make sense to me. If the ICP was lower than desired, the % would be at least 54% since that's the stock programming's max value it can go to to try and maintain desired ICP.

Your boost levels aren't that low....12/13 PSI isn't bad for a early Powerstroke especially if you're running stock injectors and a stock 1.15 A/R turbine housing.
ON EDIT:

I see you have AD injectors. If you're still running the stock 15 degree High Pressure Oil Pump, there's going to be an issue there for sure. You are running out of high pressure oil. It would also explain the 15% IPR at an idle. The boost seems a little low, especially with the SD turbocharger you say you're using.


It still doesn't explain why the PCM isn't commanding more IPR duty cycle.

What I find odd is that all the stuff looks good, but stock. Also, if ICP is low to the point it's setting a P1211 DTC, the IPR should be sky high and it's not. Very strange indeed.

I'm re-running the calibration through the calculator to see what we're commanding. The tables show a fair bit higher (2850 - 2950 PSI) so I think something is up. Still working on a solution and should have some answers in a little bit.

Stay tuned... :)

ok I have a interesting factor to add im not 100% sure but..

Changing my fuel filter tonight, Lights beaming, so Start it up to check for leaks.. Nice looks clean every thing is good, But then I notice some smoke by the downpipe, passenger side valve cover appears to be cracked/leaking:eek:

Dubya Tee eff does that mean? Could that be my low boost, and lack of oil pressure ? definitely leaking oil, Like a blind man I missed it

I feel stupid, and Ticked, I Never had this issue before my injector swap, This isn't the first time I changed my filter at night..
So tomorrow ill get the degreaser and a flashlight and find out if its really cracked or what.. But I took a video with the lights if any body is interested

:censored1:One thing after another

An exhaust leak before the turbine is probably the most common "lack of boost" culprit.

If you're leaking enough high pressure oil to cause drivability problems, it's not going to be a seep or small leak...your truck will resemble the Exxon Valdez.

Oh and "one thing after another" is just something that goes on once you start modifying things. It's just part of the game.

I have set the P1211 3 times now running on the 100HP tune. they all came under hill climb at acceleration at a mile high or higher. showing 31-34 Manifold absolute pressure. not sure what Bill has the trigger points for the code set at but it was about 61-65inHg on my AE scan. Bill I am open to ideas if you have any... Just haven't got around to looking at the issue. Cleared the codes with AE.. problem solved :giggle:

I actually missed seeing what my boost was but my gauge was showing above 20PSI when I glanced up at it...

EDIT: I just remembered i wrote down the DTC results from the last occurance on my BlackBerry but didnt put down the rpm throttle data etc as i was driving at the time
p1211
IMAP 64.6 hg in

Ok, Its leaking, and I'm probably low on oil now, But its not pouring out..

basically this small crack couldn't cause much of an issue?, Besides making a mess and making me have to replace it..?
sadly I was hoping this would be my main issue!:doh:

Got to Pay to Play I guess ? But come on a leaky valve cover?!

here it is.. Any other way to maybe seal this? Or should I order a new gasket/cover?
http://i122.photobucket.com/albums/o...edCover001.jpg

So got me a new cover and changing it today, any body know torque specs on the cover bolts?

hoping I dont have to take the intercooler tubes off :(

Thanks

If I am not mistaken 12-18 ft lbs.

Mahalos Chuck!

Do you or any body know if its Normal or OK to have Oil in the UVCH? connectors ? that go in the V/C gasket:shrug:

so.. dont know whos all reading this.. But I broke one of the UVCH? connectors inside the cover, It was all melted together, Same one that had Oil on the outside..
I assume this is bad, What could cause this ??

And where can I get connectors? can I just splice and replace um ??

Mahaloz for any info here is one picture http://i122.photobucket.com/albums/o...l/DSC_0161.jpg

-Patch

I would recomend going down to NAPA and picking up a new harness assembly. I cant remember which side is which on those plugs, but I think it is the glowplug side that crispied on you. how did the other plug look? they have a kit that replaces the whole kit and kabodle except you need to splice into the wire harness to replace the outside plugs.

Check your glowplugs while you are there to make sure they aren't the culprit and drawing to many amps.

For a minimal fee, I'll send you a good pair of valve cover gaskets and under-cover harness.

The connectors melted due to high resistance, either from oil intrusion or a loss of terminal tension.

I wouldn't splice those......

The dealer has what you need. It's not "cheap" but you won't have to worry about it happening again.

Mahaloz guys, I already payed the dealer:disbelief:

Got every thing back buttoned up, But Im still having BOOST issues !

Manifolds or should I say headers, are good, uppipes so far so good..
biggest mess I notice is the damn CCV leaking , Need to figure something out with that..
but I don't know where to begin to look now, Most the intercooler boots that I can access are pretty darn tight, I notice a little oil residue inside also from the CCV i guess ?

How can one test for boost leaks other wise? I've read about caping the intake side of the turbo and pressurizing the system? but still a bit confuse on that..

I googled it for you and the first hit was over at PSN in a thread you started today....HA HA. Looks like you'll get an answer over there.

LOL I know..And the best part is, turned out I have no Leak, but a sticky waste gate on my new SD turbo :doh:

I assume its OK to run without the red tube connected to turbo? I was told to unplug and see if I still had turbo problems, and Bam! 26lbs of booosstt
which seems fair for my AD codes yeah ??

and also no more CEL, Did get a new set of tunes from Bill, with Upped ICP and timing, But I could set the CEL(not knowing what code) last night no problem,
but with the "red tube" removed from the turbo it runs fine, no CEL:shrug:
can that be related ??

One benefit of having a GPCM not a GPR is it will throw a code if a glow plug starts to draw too much or not enough current. though when the GPCM goes kaput they are about $150 to replace... been there, done that!

Hope this helps. Good luck!