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A strange studder

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Old Mar 15, 2015 | 10:08 AM
  #1  
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A strange studder

So my 06 6.0 4x4 is just about to break 200,000km and I've done most of the upgrades and work myself. (All the updates are in my Sig)
My problem is that when I'm cruising and the engine is at full operating temp, if Im bellow 80-100km/h nothing but as soon as I break into that speed range about 2000rpm the truck will start to spudder. Almost feels like its not firing properly is the best way to describe it.
Does anybody have an idea as to why this could be happening or causing it?
 
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Old Mar 15, 2015 | 11:01 AM
  #2  
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Originally Posted by vermilian
So my 06 6.0 4x4 is just about to break 200,000km and I've done most of the upgrades and work myself. (All the updates are in my Sig)
My problem is that when I'm cruising and the engine is at full operating temp, if Im bellow 80-100km/h nothing but as soon as I break into that speed range about 2000rpm the truck will start to spudder. Almost feels like its not firing properly is the best way to describe it.
Does anybody have an idea as to why this could be happening or causing it?
Do you have any codes? You can have pending DTC's and not have a check engine light.
 
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Old Mar 15, 2015 | 11:16 AM
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Got a ScanGauge?
 
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Old Mar 15, 2015 | 11:17 AM
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FICM power at 12 volts, logic power steady at 48 volts? You can check these without a SG2 or DashBoss with a multimeter.
 
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Old Mar 15, 2015 | 01:52 PM
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2 theories:

Dying injector or 2
Clogged EBP sensor and/or tube


Josh
 
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Old Mar 15, 2015 | 02:04 PM
  #6  
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Originally Posted by mhoefer
FICM power at 12 volts, logic power steady at 48 volts? You can check these without a SG2 or DashBoss with a multimeter.
According to my sg2 I have no codes of any sort.
KOEO I'm getting 47-48v and KOER I'm getting 48v as well. What's the acronym for logic power? Or perhaps I never loaded it on when I got it. So I need the pid for it.

Is the only way to tell if the epb sensor is failed by a code?
 
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Old Mar 15, 2015 | 04:11 PM
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Yeah I would pull and clean ebp and all sensors
 
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Old Mar 15, 2015 | 04:30 PM
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sgII doesn't read all the codes. need a code reader or tuner that can. my sct x3 pulls simple codes the sgII can't see.
 
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