Whistling noise?
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Freshman User
Joined: Jul 2010
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Whistling noise?
Pulled my 10k 5er this weekend.
I got a f350 auto. Start climbing the mtn and after the truck is runnin 3grand for a min it starts whistling like im loosing boost from somewhere and it also sounds like it does when u are going down a hill and the truck downshifts to use turbo assist? anybody know what this could be and how i fix it.
I got a f350 auto. Start climbing the mtn and after the truck is runnin 3grand for a min it starts whistling like im loosing boost from somewhere and it also sounds like it does when u are going down a hill and the truck downshifts to use turbo assist? anybody know what this could be and how i fix it.
Cargo Master
Joined: Mar 2007
Posts: 3,103
Likes: 32
From: AB/BC
Could be a number of things,a crack in one of the exhaust flex joints that can normally be seen as soot on the firewall.It could also be a crack in a CAC tube blue boot,I would suspect that one or the other is what you are hearing.
Post Fiend
Joined: Oct 2009
Posts: 12,123
Likes: 35
From: N. Fort Worth, tx
well pulling a trailer would make the fan come on more. so the thing here is does it seem to happen as the fan comes on.
I cant hear the noise from here so its all a guess. but yes common enugh.
I cant hear the noise from here so its all a guess. but yes common enugh.
Lead Driver
Joined: Sep 2003
Posts: 5,241
Likes: 3
From: Other side of the sunrise
I will watch this thread as I am awaiting some mods on my truck and my whistle just may disappear (egr related). If it does, I'll post up what I did to make it go away. Although I'm sure there are more than one possible causes for this type of sound, it wouldn't hurt to log various fixes to the problems to help others.
Here is the link to the tea kettle type whistle that I am experiencing, and hopefully am in the process of fixing. We'll see.
https://www.ford-trucks.com/forums/6...eavy-load.html
Here is the link to the tea kettle type whistle that I am experiencing, and hopefully am in the process of fixing. We'll see.
https://www.ford-trucks.com/forums/6...eavy-load.html
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