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Whine while accelerate

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Old 11-02-2014, 06:07 PM
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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; 11-02-2014 at 06:10 PM.
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Old 11-03-2014, 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 11-03-2014, 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 11-03-2014, 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 11-03-2014, 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 11-03-2014, 10:40 AM
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got it... i guess
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Old 11-03-2014, 07:07 PM
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Not me, still lost.
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Old 11-03-2014, 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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