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6.0L Power Stroke Diesel 2003 - 2007 F250, F350 pickup and F350+ Cab Chassis, 2003 - 2005 Excursion and 2003 - 2009 van

Need help

Old Mar 25, 2012 | 07:54 PM
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Need help

I have an 04 f350 with the 6.0l, banks six gun and speedbrake. my problem is it keeps having turbo blow back fits that have been getting worse over the last year and nobody seems to be able to figure it out. it only seems to happen under load, usually around 10000lbs. it doesnt just happen under hard acceleration then letting off, now its whenn im goin up a hill it will do it till i slow right down again. any suggestions?
 
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Old Mar 25, 2012 | 08:20 PM
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Is that with the 6 gun in stock power (level 1) or are you running it with a higher level? If you are try running it in stock power level when pulling that heavy.

Sounds like you are dumping excess turbo boost?
 
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Old Mar 25, 2012 | 08:40 PM
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It doesn't seem to matter what setting it is on, I have tried them all
 
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Old Mar 25, 2012 | 11:06 PM
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Moved to the 6.0L Powerstroke Diesel forum.
 
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Old Mar 25, 2012 | 11:17 PM
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Sticky veins? Cracked unison ring? MAP sensor?
 
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Old Mar 26, 2012 | 01:05 AM
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Brand new Garrett Powermax less than a week ago, no codes coming up for MAP sensor, checked EP sensor and seemed fine, had a code come up when I unplugged it and went away when plugged back in.
 
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Old Mar 26, 2012 | 03:06 AM
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Have you tried taking the Six Gun completely out the of the equation to see if your troubles continue? At 10k pounds, your just starting to work the truck.
 
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Old Mar 26, 2012 | 10:25 AM
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Ya thought of that, that's my next attempt, how would that be any different than running it on stock level though?
 
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Old Mar 26, 2012 | 10:39 AM
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you need to check the values ofBARO, MAP and EBP Sensors at KOEO and LOw Idel,High Idel 2500rpm
 
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Old Mar 26, 2012 | 03:09 PM
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Originally Posted by axel66
Ya thought of that, that's my next attempt, how would that be any different than running it on stock level though?
Tuners have a bad habit of doing strange things to these trucks. Yeah, they'll make stupid amounts of power. But when you start have issues, most code readers have all kinds of havoc getting the right information. Benny has got you pointed in the right direction with confirming that the sensor are good. If you've got one out of wack...the PCM gets confused quickly.

For the record, since no one has said it yet...your not doing your engine or tranny any favors by running the 6 gun. If you haven't "built them up"...either think about it soon or plan on replacing some expensive parts.
 
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Old Mar 26, 2012 | 03:38 PM
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What should my numbers be for the sensors, my elevation is about 2100 ft. And thanks zhilton, I have a bit done, exhaust, intake, egr delete, and head studs. Nothing for the tranny yet but that's next if I can get this fixed ever.
 
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Old Mar 26, 2012 | 03:52 PM
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At KOEO they should all be the same, since baro reads atmospheric pressure and with the engine off the intake and exhaust manifolds aren't under pressure or vacuum.

BARO pressure will be somewhere around 14-14.4, 2100 ft shouldn't throw it off anymore than the weather normally would on a given day.

For KOEO, idle, high idle:
Baro 14-14-14
MAP 14-14-15
EBP 15-15-16
 
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Old Mar 26, 2012 | 04:19 PM
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Less than a week? Did you do the "quick Vgt" relearn trick? I was thinking maybe the Vgt was stil learning, I would think that a week would be enough, but it has to be up to operating temp idling for it to go through it on its own
 
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Old Mar 26, 2012 | 04:55 PM
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Does th '04 still use the EBP reading? I know on the '03 it's inferred.
 
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Old Mar 26, 2012 | 05:11 PM
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Ok, with KOEO on the one wire I have five volts then go to the middle wire I have about 1.4 volts. From what I understand that should be five volts still, correct? If I'm doin the pressure test right I am getting no pressure at all while idle.
 
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