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X3 screech when revved. Advice needed.

Discuss anything to do with the (E83) BMW X3 here
(Older F25 discussion within will ideally to be moved to F25 Sub section below)
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SW710
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X3 screech when revved. Advice needed.

Post by SW710 » Fri May 25, 2018 10:15 am

Hi all, just joined the forum for some advice. Had my X3 for a few months and love it. 2006, 100k miles but runs well. This morning while driving it started to make a screech / high pitched whining when revved. See attached video. Any ideas what this might be ? Many thanks, Steve

see video below

https://drive.google.com/file/d/1i84RX2 ... sp=sharing
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Richyroos
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Re: X3 screech when revved. Advice needed.

Post by Richyroos » Fri May 25, 2018 11:29 am

There are a few things it might be, including a drive belt tensioner bearing worn, an worn alternator bearing or pulley clutch (if it has one) on the alternator. I would get it looked at as soon as you can.
If in doubt, and all else fails - read the instructions!!  :) :)

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X5Sport
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Re: X3 screech when revved. Advice needed.

Post by X5Sport » Fri May 25, 2018 4:24 pm

Water pump and air conditioning compressor clutch to add to the list of possibles.  Might be the viscous damped fan clutch too.
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SW710
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Re: X3 screech when revved. Advice needed.

Post by SW710 » Fri May 25, 2018 5:42 pm

ok thanks all
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