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Old 08-15-2019, 11:42 AM   #1
323i jlviii
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Join Date: Sep 2012
Location: utah
Posts: 225
My Ride: 323i, 2 330xi, X3
Roller coaster sound


A rattle that sounds like a loose chain at times. transfer case? Vanos? Timing Chain?
It's a 3.0, 330xi's but damest sound. Highway is most concerning, getting up to speed - nothing, once there 50-70mph the coasting part has a clicking "roller Coaster" sound until I apply just alittle gas, then it's gone til i coast again. I can apply the brake a gas at the same time to get rid of it?

Anyone know of a "sound listening" product that you can attach to a part, drive awhile then "playback" the recorded driven sound"

Any ideas would be a great, don't want anything to explode while she's driving it.
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Old 08-15-2019, 12:01 PM   #2
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Join Date: Sep 2017
Location: Patras, Greece
Posts: 64
My Ride: e46 facelift coupe
probably your pulleys , remove the belt and give them a spin .

Last edited by doukas007; 08-15-2019 at 12:03 PM.
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