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Discussion Starter #1
Alright guys my truck has always made these sounds so I figured Id post this up and see what yall thought. When its first started or when its cold it cranks up and about a second or two after its running it makes a weird squeal (not a belt) and when I turn the truck off it sounds like the turbo is winding down and it makes a kind of growl sound...heres the video



let me know what yall think

I have taken the intake tube off and theres no play on the shaft in the turbo so not really sure
 

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07 fx4 superduty..6.0
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179 Posts
sounds like the turbo.....your gonna get better answers than that one....just figured i put my 2 cents in from stinkadena
 

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Discussion Starter #3
thanks, yea it sounds like the turbo to me as well but the shaft is tight, theres no play so Im wondering what else it could be
 

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Hood Rich
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What air filter do you have
 

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Discussion Starter #6
stock air filter
 

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Hood Rich
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possibly sticking vanes... I have had plenty that the power is there, but once shutdown the vanes dont really return to ideal position
 

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Discussion Starter #8
maybe, I am really just not sure lol
 

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Have you cleaned the turbo out in a while? Mine would squeal like crazy on cold start, sounded like a belt but not the case. Turbo was really coked up. Cleaned it out with the scotch pads for a drill and back to normal.
 
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