XF and XFR ( X250 ) 2007 - 2015

Need help whine from engine bay

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Old Nov 30, 2022 | 10:08 PM
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From: Victoria
Default Need help whine from engine bay

Hi Guys I googled and searched the forum but I couldn’t get a clear answer. My 5.0 2011 xf non SC seems to have a whine from the front engine bay. It gets louder with acceleration . I can make the noise when in park. Im hoping it isn’t Tranny related. 157km driving lightly . Dads car actually. Helping him out. When the car downshifts it follows with the sound of the rpm ‘S it’s drowned out at highway speeds but is I believe still there .. I’m thinking belt but would like to know how ne could tell it maybe or may not be transmission. That wouldn’t be fun.
 
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Old Nov 30, 2022 | 10:09 PM
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ignore the dash rattle , although Anyone have insight there that be great too lol. when ever you start the heat etc it does this rattle
 
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Old Dec 5, 2022 | 01:51 PM
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Originally Posted by Gomes
Hi Guys I googled and searched the forum but I couldn’t get a clear answer. My 5.0 2011 xf non SC seems to have a whine from the front engine bay. It gets louder with acceleration . I can make the noise when in park. Im hoping it isn’t Tranny related. 157km driving lightly . Dads car actually. Helping him out. When the car downshifts it follows with the sound of the rpm ‘S it’s drowned out at highway speeds but is I believe still there .. I’m thinking belt but would like to know how ne could tell it maybe or may not be transmission. That wouldn’t be fun.
It sounds a lot like a blown alternator diode. Simple check...check the voltage output.
 
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