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///M3 Forum
The BMW E46 ///M3 is the M version E46 and puts out an amazing 333 HP and 262 lb-ft of torque at stock specs! There are an amazing amount of modifications for both the coupe and convertible models so read up and get started modifying your cars today!

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Old 06-01-2017, 06:03 PM   #1
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Join Date: Jun 2017
Location: California
Posts: 2
My Ride: E36 s54 swapped
My s54 is making a scary noise

Hello my s54 is making a very odd noise. This noise comes on in about 3-5 minutes of driving. When the noise comes on I can make it go away if I turn the car off for about a minute but it will come back after a bit of driving. I had the VANOS system replaced with the Beisan system about 300miles ago and just today I replaced the water pump to see if it was the problem. I popped off the valve cover and the upper tensioner looked good and the sides seemed good from what i was able to see. I tried searching and no one seems to be having this noise/problem. _a_
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Old 06-18-2017, 11:51 PM   #2
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Join Date: Apr 2011
Location: Sunnyvale, CA
Posts: 42
My Ride: '04 M3
Have you checked your pulleys?

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Old 06-19-2017, 10:30 PM   #3
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Join Date: Jul 2015
Posts: 37
It is hard to see where the noise is coming from from the video. I had a similar noise last year but could not locate the issue. I had it towed to the shop and discovered rod bearings had gone bad, vanos was checked and it was fine but could be that as well.

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bmw, e46, m3, noise, s54

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