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Old 04-02-2009, 02:42 PM   #1
Scooby Newbie
Member#: 170855
Join Date: Feb 2008
Chapter/Region: Tri-State
Location: Hellertown, PA
2017 WRX

Question strange rattling noise.

I noticed today that their is a rattling noise coming from my engine. I dont know if i has always done this as i normally drive with the music up. But it is only when i hit around 2150 to 2300 rpm and then again 4200 to around 4350 rpm. It does not matter what speed i am traveling at if im on the gas in the ranges as stated it will just make a rattling noise.

Any idea what it could be and if i should worry about it.

Btw no CEL is on and all fluids are fine.
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Old 04-02-2009, 09:15 PM   #2
NASIOC Supporter
Member#: 165749
Join Date: Dec 2007
Chapter/Region: South East
Location: Central Floriderp

worn or broken engine and or transmission mount(s) is my best guess for a place to look first. sounds like certain harmonics are just right to vibrate the cabin. My Group-n mounts do this a little bit right at 3k and again near redline, where as my sock mounts never did, so im pretty sure the mounts caused it.

Maybe a bad pulley or beltcover?
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Old 04-03-2009, 02:02 AM   #3
Scooby Newbie
Member#: 207473
Join Date: Apr 2009
Default Obvious but...

A loose bolt somewheres.
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