Squeal under the hood - Ford Powerstroke Diesel Forum
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  #1  
Old 05-13-2011, 01:59 PM
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Squeal under the hood

Ok guys here is a tuff one for you. I have a 09 6.4l auto. After the truck is hot it makes a squealing sound. But after the truck cools off and I let it run in park the sound will stop? It sounds like its coming from the turbos but I'm not sure?

I have a clip of the truck running and you can hear the sound with the hood down or from in the cab while driving? Let me know what you guys think.

I have also noticed that my fuel mpg is going down. I have a dpf delete and a H&S XRT Pro but I am running no power. Other than that the truck is stock it has about 59k on it.

Thanks
http://s1187.photobucket.com/albums/...t=IMG_0403.mp4

Last edited by driggs; 05-13-2011 at 02:10 PM.
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Old 05-13-2011, 04:34 PM
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Maybe the alternator?
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Old 05-13-2011, 04:43 PM
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Maybe but why would it start and stop when the truck idles down and cools off?

I can get the truck to replicate the sound but I have to drive it in tow/haul to get it warm enough to do it but as soon as I park it the sound stops?
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Old 05-17-2011, 06:03 PM
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noise

Noise is due to a broken exhaust manifold bolt, has been on left sides, at rear,causes a whistle, took a while but was verified !!!!
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Old 06-02-2011, 04:07 AM
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I have that exact same problem w/ mine.
ill be calling the dealer looks like.
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Old 06-05-2011, 10:32 PM
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Anyone heard a chirp noise when they have the ac on and towing something, I hear it when I am cruising it just chirps about every 20 seconds really really weird but nothing with the ac off? Any info would be great didnt mean to jack your thread
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Old 06-17-2011, 01:20 PM
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My truck is at the dealer right now and they cannot get it to make the squeal niose to figure out what is going on... and they willl not listen to me about that broken bolt.
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Old 07-12-2011, 12:12 PM
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you can see it yourself
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Old 07-12-2011, 04:06 PM
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I'm having the same problem but I did take a video of it.

However we are still having trouble duplicating it. I think that it too hot outside Not sure what to do at this point. I did not see any soot on the exhaust.
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Old 07-18-2011, 04:41 PM
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Well I still have the problem. I'm not sure what to do the truck has had the dealer look it over for a week now and I just picked it up.

Any Ideas guys? The dealers are having a tuff time duplicating it.
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