ENGINE WINDIND DOWN? - Ford Powerstroke Diesel Forum
6.4L Performance Parts Discussion What has or has not worked for you?

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post #1 of 17 Old 02-13-2011, 05:12 PM Thread Starter
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ENGINE WINDIND DOWN?

when im driving the truck normal(easy) then nail the gas for about 5-8 seconds then back off i hear the engine winding back down. is that normal? im sure there is gonna be some wise a$$ remarks, so im ready. 1st diesel.
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post #2 of 17 Old 02-13-2011, 05:39 PM
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If you have the DOC/DPF delete youmight be hearing the turbo and that is a good sound..........


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post #3 of 17 Old 02-13-2011, 05:46 PM Thread Starter
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i do have the doc/dpf delete. sooooo, that a good sound? is it bad for the motor?
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post #4 of 17 Old 02-13-2011, 06:17 PM
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No. That is the sound of your motor saying......thank you, now I can now breath.


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post #5 of 17 Old 02-13-2011, 10:32 PM
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No. That is the sound of your motor saying......thank you, now I can now breath.
hahahahahahahahahaha

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post #6 of 17 Old 02-14-2011, 05:25 AM
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I was thinking the same thing! When I turn the truck off it sounds like the turbo needs greased. It's not the wine, its sounds if something is rubbing the turbo. My 6.0 didnt sound like this.

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post #7 of 17 Old 02-14-2011, 09:55 AM
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it could be the turbo surging down, like going from 30+psi down to 0psi. Does is sound almost like a shutter?

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post #8 of 17 Old 02-14-2011, 10:06 AM Thread Starter
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sound like a what? kinda sounds like its reving back down.
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post #9 of 17 Old 02-14-2011, 10:08 AM
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my truck is stock for now but if i am heavy on the throttle then just back right out it like surges down, i can't really think of anything to comare the noise to its like a fluttering sound

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post #10 of 17 Old 02-14-2011, 12:23 PM
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Not sure if I'm hearing the same thing but I've been wanting to post about it for a while now... Like if you're at a low speed (so you can hear better) and hammer on it for like 3 seconds then come off the pedal as fast as you can you can hear something really nasty under there... Is there a back pressure flap or something? if you think about it, with turbos spooled up and pumping so much air, then just slamming the throttle shut, that air has to go somewhere. Right?
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