Turbo "Whoosing" - Ford Powerstroke Diesel Forum

 
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post #1 of 10 Old 11-01-2012, 06:06 AM Thread Starter
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Turbo "Whoosing"

I bought this truck back in August and have had a Whoosing sound coming from the turbo/exhaust. When it's warm out it does it upon start up and then that's it. It sounds like a popoff valve or vacuum leak then you can hear it "seat". Well this morning it was 32 degrees here when I started it and it didn't do it on start up. I let it warm up about 20 min before I left for work. When I would accelerate I could hear the " Whoosing" and then "seating" up til around 1200 rmp and it was very sluggish. When it seated I noticed the power come back. As soon as I would let off and accelerate again, it would do it again. After I drove it about 5 miles it quit doin it all together. Any ideas what it might be?

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post #2 of 10 Old 11-01-2012, 06:15 AM
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This is your exhaust back pressure valve closing... the computer is closing it to help warm the engine up faster, altho i dont know how well it works. If it annoys u just disconnect it on your turbo pedistal and make sure the vale is open and wire it open for insurance, or leave it alone and run it as it is

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post #3 of 10 Old 11-01-2012, 06:22 AM Thread Starter
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Should it be doin it while I am trying to drive, causing it to run crappy? Would changing it help or is that just normal?

2004 F-350 Lariat FX4 CCSB, Lariat, FX4
5% Tint All Around
MBRP 4" Straight Pipe
ARP Head Studs
Ford Gaskets
Sinister EGR Delete
New Oil Cooler
Cat ELC
Sinister Coolant Filter
Blue Spring
SCT Livewire
Shell Rotella T6 Synthetic Oil
Motorcraft Filters

Last edited by MDRhoads360587; 11-01-2012 at 06:38 AM.
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post #4 of 10 Old 11-01-2012, 06:57 AM
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It will do it until the pcm thinks the engine is warm enough. Most of us just disconnect it

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post #5 of 10 Old 11-01-2012, 07:10 AM Thread Starter
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So just disconnect and wire it open? It won't throw any codes or make lights come on?

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post #6 of 10 Old 11-01-2012, 08:28 AM
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Once you unplug it, it will always be open. And no you wont throw any codes once you unplug it. Had mine unplugged for at least 4 yrs now. No need for it

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post #7 of 10 Old 11-01-2012, 09:08 AM
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It will throw a soft code but the light will not cone on but if you hook it up to a scanner it may show the code for it

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post #8 of 10 Old 11-01-2012, 09:35 AM Thread Starter
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Alright. Thank you guys for the information. Much appreciated!!

2004 F-350 Lariat FX4 CCSB, Lariat, FX4
5% Tint All Around
MBRP 4" Straight Pipe
ARP Head Studs
Ford Gaskets
Sinister EGR Delete
New Oil Cooler
Cat ELC
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Blue Spring
SCT Livewire
Shell Rotella T6 Synthetic Oil
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post #9 of 10 Old 11-01-2012, 02:20 PM
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Plus is underneath the turbo, accessible from the drivers side of the vehicle. Should be hard to miss.

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post #10 of 10 Old 11-04-2012, 01:15 AM
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You are not letting the truck warm up for 20 minutes are you? A couple of minutes is plenty. Just ease into the throttle until the needle comes up.
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