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1994.5 - 1997 7.3L Power Stroke Diesel  

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Old Aug 10, 2012 | 07:26 PM
  #1  
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From: Cameron, Ok
Whoosh!

Am I right in thinking the Whoosh I hear when the tranny shifts as I kinda' get on it is the waste gate opening?
 
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Old Aug 10, 2012 | 07:52 PM
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From: Livoina,La
Is this on your 2000 ? Are a OBS ?
 
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Old Aug 10, 2012 | 09:40 PM
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From: Cameron, Ok
yes, it's my 2000...I don't know what an obs is.
 
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Old Aug 10, 2012 | 09:46 PM
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From: Cameron, Ok
To me, it sounds like a big rig with air brakes blowing the safety every so often, but, it happens when the engine loads up...like after an up shift.
 
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Old Aug 10, 2012 | 10:02 PM
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From: Cameron, Ok
Must be a normal sound!? It runs great. Just whoosh's. Is it normal?
 
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Old Aug 10, 2012 | 10:03 PM
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obs is the old body style 94.5 to 97 7.3l versus the later 99-03 superdutys like yours.
 
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Old Aug 10, 2012 | 10:10 PM
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From: Cameron, Ok
So I know this is kinda' stupid question...i was just curious...I mean, it makes sense that it's the sound of the waste gate venting, but, I wasn't sure and just thought I'd check with y'all and confirm it's just a normal sound, although I've never heard any other p/u's do it, but, maybe ya' hafta be in the truck to hear it? Doesn't seem like anything else could make that sound.......
 
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Old Aug 10, 2012 | 10:21 PM
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Oh shucks, I just realized I was in the wrong forum! Sorry
 
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Old Aug 10, 2012 | 11:38 PM
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Its cool. Your hearing the excess air rushing back out the intake and that's normal
 
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Old Aug 11, 2012 | 07:10 AM
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yup. excess air coming out of the 6637 as the engine drops revs.
you do not hear it with the stock air filter and air box in place. but it is loud as all hell with the 6637 in place.
 
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Old Aug 11, 2012 | 03:38 PM
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Originally Posted by lartross
Oh shucks, I just realized I was in the wrong forum! Sorry
Hey, no worries Theres some great guys on this side of the fence too lol
 
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