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1994˝ to 1997 7.3L Power Stroke Diesel 7.3L Power Stroke Diesel equipped F-Series and F-Super Duty. |
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Thread Tools | Display Modes |
#1
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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 ![]() Mahalos for any info -Patch Last edited by bamboo; Sat, October 17th, 2009 at 12:37 AM. |
#2
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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.
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Tuning, flashing, burning chips, and repairing all aspects of 7.3L Powerstrokes. SEVEN 7.3L-powered vehicles in the driveway. Two didn't come that way from the factory! |
#3
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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... ![]()
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Bill Cohron - The Mad Doctor ![]() ![]() ![]() Power Hungry Performance - The ORIGINAL in Ford performance tuning... Since 1997! (678) 890-1110 www.gopowerhungry.com - Home of the Hydra Chip, Minotaur Tuning Software, and the new Orion Reflash System for Navistar! Bring back ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() Much to my surprise, I'm actually quite enjoying Linux! ![]() |
#4
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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 ![]() 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 ![]() |
#5
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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.
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Tuning, flashing, burning chips, and repairing all aspects of 7.3L Powerstrokes. SEVEN 7.3L-powered vehicles in the driveway. Two didn't come that way from the factory! |
#6
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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
![]() 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
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DJ Phoenix (my modded) Hi-1200/240Tow/75FS/80DD/100/140SS +Minotaur ASE Master Auto Technician ![]() 2001 Ford Excursion 7.3 4x4 Projects. 1970's Hustler and Max II Amphibious ATV's |
#7
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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! ![]() 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? ![]() Last edited by bamboo; Sat, October 17th, 2009 at 06:24 PM. |
#8
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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 |
#9
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If I am not mistaken 12-18 ft lbs.
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Chuck 1992 Calypso Green Mustang notch 1995 Mustang GT 2004 Explorer Limited A veteran is someone who, at one point in one's life, wrote a blank check made payable to 'The United States of America', for an amount of 'up to and including my life'. That is honor, and there are way too many people in this country who no longer understand it. -Author Unknown |
#10
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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 ![]() |
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