studder issuse and fuel pressure problems - Ford Powerstroke Diesel Forum
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Old 06-19-2014, 12:53 PM
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studder issuse and fuel pressure problems

have a 05 with new turbo, air dogg system, intake, exhaust, egr delete, bkue spring mod, and sct tuner. thing breaks up and studders real bad around 55mph and when you lay into it good. fuel pressure is constantly moving around at idle between 58-62 psi and drops to 46-50 psi when wot. programmer is on can tune at level 4 out of 5. any thoughts ?
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Old 06-20-2014, 07:30 PM
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anyone got any ideas
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Old 06-20-2014, 07:34 PM
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Boost leak? Can you monitor icp, ficm voltage, and boost? If so what are your readings?


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Old 06-20-2014, 07:34 PM
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is the air dog a replacement for the factory pump?
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Old 06-20-2014, 08:24 PM
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ficm is good boost is good. yea air dogg replaced factory pump by what I.can tell
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Old 06-20-2014, 08:34 PM
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Airdogs fail alot because they dont like the high pressure you can adjust the airdog itself for a slightly higher pressure
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Old 06-20-2014, 08:37 PM
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full pressure at idle is 62 & wot it drops to.around 50.. any ideas what to.do cause this thing is driving.me.nuts lol
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Old 06-20-2014, 08:47 PM
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stumbles worse in od than anything and usually fuel.pressure is around 60
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Old 06-20-2014, 08:59 PM
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I'm assuming you have an edge tuner?
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Old 06-21-2014, 04:41 AM
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have a sct
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