car making noise after 30 mins - BMW Forum -

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post #1 of 2 (permalink) Old 03-05-2009, 01:06 AM Thread Starter
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car making noise after 30 mins

i drive a 2001 330ci and i just noticed (cuz i have music blasting all the time) that after about 30 mins of driving or idling for a while, that my car makes this high pitched sound (it doesnt sound like metal) and the more i press the gas pedal, the louder that sound gets. I'm thinking it has something to do with how hot my car is because it doesnt make that sound when i start my car. What could be causing this?
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post #2 of 2 (permalink) Old 03-05-2009, 03:25 AM
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I would say open the bonnet and try and find where the noise is coming from, that will give us a better idea what it might be.


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