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Old 10-06-2012, 07:30 PM   eBay Motors  #1 (permalink)
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fluttering sound

i keep getting this fluttering sound from motor and dont know what it is. i think its the vanes in the turbo but not sure wanting to see if anyone else gets this same noise. it will do it at idle in a parking lot and do it at a stop light
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Old 10-06-2012, 07:33 PM   eBay Motors  #2 (permalink)
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What do you mean by fluttering sound? Does your exhaust note change tones for a second then back to normal?


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Old 10-06-2012, 07:43 PM   eBay Motors  #3 (permalink)
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sound comes from intake when listening and walking around truck running. can hear it in the cab. its not exhaust i know that difference plus i have stock exhaust minus the down pipe
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Old 10-06-2012, 07:44 PM   eBay Motors  #4 (permalink)
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Have to take a video I guess. Have not a clue what you are talking about with the details you described.


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2007 LBZ CCSB Wehrli S475/stock-Suncoast by Dmitri
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Big thanks, Duramaxtuner.com & Kory Willis @ PPEI
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Old 10-06-2012, 07:47 PM   eBay Motors  #5 (permalink)
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the sound comes and goes and is a fluttering noise dont know how else to explain it
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Old 12-13-2012, 04:16 PM   eBay Motors  #6 (permalink)
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Did you figure this out yet? Mine just started making a "fluttering" sound that fades in and out but only when driving down the road at speeds between 40-75 mph.
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Old 12-13-2012, 04:36 PM   eBay Motors  #7 (permalink)
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Quote:
Originally Posted by POWERTRIP View Post
Did you figure this out yet? Mine just started making a "fluttering" sound that fades in and out but only when driving down the road at speeds between 40-75 mph.
That is not good my friend


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2007 LBZ CCSB Wehrli S475/stock-Suncoast by Dmitri
EFI Live: 620HP 1220TQ
5" DE, rerouted, debadged, demolded, air dog, stock fuel

Big thanks, Duramaxtuner.com & Kory Willis @ PPEI
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Old 12-14-2012, 05:02 AM   eBay Motors  #8 (permalink)
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Take em, you say "not good". How so? I need help on this!
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04.5 GMC Sierra 2500HD SLT LLY, 4X4 CCSB, Bill's Custom Intake Stage 4, S&B Powerstack filter,LBZ MP, 4" turbo downpipe into 5" exhaust, 7" MBRP tip, EFI Live w/ dsp5, Resonator plug, PVC rerouted and plugged, level kit, 33" BFG's, all-on mod
7-6-2011
Head Gaskets, ARP Headstuds, Full EGR Delete, Aftermarket exhaust manifold, Race Valve, CTS INSIGHT
Coming soon:
AIR DOG II Lift Pump, Smoked tail Lights, Smoked cab clearance lights, Lift kit, and Built trans.
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Old 12-14-2012, 05:05 AM   eBay Motors  #9 (permalink)
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Scan your injector balance rates...
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Old 12-14-2012, 05:28 AM   eBay Motors  #10 (permalink)
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exhaust leak? mine has started this shit also along with everything else that seems to wanna screw up at the same time... heard it this morning and exhaust leak was what popped in my head first but I haven't investigated any further yet..
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