Turbo "Whoosing" - Ford Powerstroke Diesel Forum
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Old 11-01-2012, 06:06 AM
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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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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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Old 11-01-2012, 06:22 AM
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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?

Last edited by MDRhoads360587; 11-01-2012 at 06:38 AM.
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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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Old 11-01-2012, 07:10 AM
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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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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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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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Old 11-01-2012, 09:35 AM
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Alright. Thank you guys for the information. Much appreciated!!
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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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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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