6.0 studdering problems - Ford Powerstroke Diesel Forum

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post #1 of 15 Old 10-04-2009, 04:43 PM Thread Starter
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6.0 studdering problems

For the last month or so i have been having a studdering problm with my truck it seems to only do it with my sct is on. Stock seems like i have no power i cant even power bomb it on wet asphalt in stock tune i thought this might only happen when the motor is cold but thats not the case it runs fine until you get to half throttle then it starts to happen. Ford said my egr valve was sticking so i got a plug from diesel tech 1. Its still acting up i dont know what else to do. Its really annyoing and the most boost i have ever seen is 28 with cales 140 tune. Ive never seen the egts get over 1400 which I know is hot but going 75 they are around 750.Just would really like to figure this out any techs out there i would really appreciate it

2003 F350 Lariet Leveling kit eagle 197s MBRP stainless tb to 6" stack Sinister coolant kit Sct with Looney and Innovative High Idle fog light and bright box mod soon to come Edge CTS PHP ficm tuning and Cab lights
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post #2 of 15 Old 10-05-2009, 02:59 PM Thread Starter
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bump bump bump

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post #3 of 15 Old 10-05-2009, 03:01 PM
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That boost sounds normal for Cales tunes. Does it only feel this way with that one tune? If so try another tune. Does it miss while you are just cruising?

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post #4 of 15 Old 10-05-2009, 03:47 PM Thread Starter
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ive tried all my tunes except erics cause i just got it but cruising any speed drivers great but when you try to get on it at any throttle it just starts to sputter and you dont see it jumping in the boost or rpm gauges and i just cleaned my refineshed my turbo because i thought my vanes were sticking

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post #5 of 15 Old 07-30-2010, 07:49 PM Thread Starter
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No my truck does this again but its hit and miss and if I put my truck to stock it runs great could this be a fuel pressure problem.

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post #6 of 15 Old 07-30-2010, 09:31 PM
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Mines doing this too, and I dont have a programmer on it. Its bone Stock (save for the exhaust)

Im going to clean the EGR this weekend, to see if that helps. Thou after reading your posts...I kind of doubt it.

I'm at a loss. If I gently roll into the throttle and load the motor its studdering, but if I get after it from the start, its fine. It was only Studdering in 1st gear, but now its going it in 2nd and starting to do it in 3rd too... It also does it far worse when cold...than if I let it warm up fully... Anybody have any thoughts??

~Blue

2004 F250 4x4 Supercab 6.0 6spd Shortbed
1993 Bronco (needs some TLC)

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post #7 of 15 Old 08-01-2010, 05:34 PM
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My friend with a F350 2004 late model has the same studdering.
We changed the air filter, checked the EGR valve and its the same.
I suggested to unhook the EGR valve and did not change.

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post #8 of 15 Old 08-01-2010, 05:41 PM
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I'm having the same problem! The EGR was unplugged and still ran the same.



2003 f-250 6.0l lariat
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post #9 of 15 Old 08-02-2010, 07:51 AM
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May want to check your FICM , mine has a miss about 1000 rpm and the power supply board is burnt in mine.

Paul H

2004 F350 CC Dually Lariet LB, 6.0L 190K miles, problem child

1996 F350 CC Dually XLT LB, 7.3L 324K miles,Tymar Intake, Hypermax DP and dual 5" stacks, ISSPro Gauges, Gil & Mikes E4OD/ multi disk converter, Tony Wildman Custom Tune, Play Toy
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post #10 of 15 Old 08-02-2010, 07:57 AM
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Try an oil change and filters after inspecting the FICM.
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