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Whine while accelerate

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Old Nov 2, 2014 | 06:07 PM
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  #11  
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Originally Posted by vintageman
sounds like the same thing a lot of others are having, check the foam gasket around the shelf area where the air filter sits. You have to unclip and pull the air filter shelf out, goes between the edge where the shelf closes on sides and bottom of tray. $3 fix, I did it a couple of months ago, no more sound.
Second that:

https://www.f150forum.com/f4/bog-dow...solved-166431/
Last edited by beantown617; Nov 2, 2014 at 06:10 PM.
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Old Nov 3, 2014 | 12:28 AM
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I had this problem it was the alternator. Unplug it a start your truck if it goes away there's your answer
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Old Nov 3, 2014 | 07:47 AM
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The bearings are still going to make noise if it's plugged in or not.
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Old Nov 3, 2014 | 09:53 AM
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I was thinking the same thing...how would un-plugging the alt keep it from turning..
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Old Nov 3, 2014 | 10:01 AM
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I think Western is talking about the internals of the alt whining, not the bearings.
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Old Nov 3, 2014 | 10:40 AM
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got it... i guess
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Old Nov 3, 2014 | 07:07 PM
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Not me, still lost.
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Old Nov 3, 2014 | 08:29 PM
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The diodes can whine when they are close to the end of their life.
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