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General E46 Forum
This is the place to get answers, opinions and everything you need related to your E46 (sedan, coupe, convertible and wagon) BMW!

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Old 03-20-2015, 10:09 PM   #1
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Join Date: Oct 2014
Location: Camarillo
Posts: 58
My Ride: 2000 BMW 328I
High Pitch Noise

So today I noticed that when I accelerate, my 00 328i makes a high pitched noise. And when I let off the gas, it goes away. I have no clue what it is. Could it be my secondary air intake? My check engine light came on and the secondary air intake is the problem. Could that be making the high pitched noise?

Last edited by JETAIME; 03-20-2015 at 10:09 PM.
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Old 03-20-2015, 10:56 PM   #2
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Join Date: Jun 2004
Location: Virginia
Posts: 1,625
My Ride: 2004 325ci
You might want to post a video or look on youtube for the noise. Recently I had a noise and looked on youtube and then scanned it. It was the tensioner.
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Old 03-21-2015, 12:48 PM   #3
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Join Date: Aug 2014
Location: uk
Posts: 83
My Ride: 2004 BMW 325i
Yeh!....as saxual328ci....said best bet do a video and post it up here or on youtube........It could be a tensioner, slipping belt, PS vanes etc....or air intake.......hearing the sound ourselves will give us a better clue.
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