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Old 01-07-2014, 10:15 PM   #1
some dude
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Member#: 100300
Join Date: Nov 2005
Chapter/Region: MWSOC
Location: MIC|-|IG/\N
Vehicle:
06 WRX
CGM

Default Vibration from rear under acceleration

06' wrx 180k stock. Original clutch.

Yesterday, I went for a drive. It was around -10*F outside. After idling the car for 7-8 min and driving a few miles, I started to give it a little boost to keep warming it up. A strange thing happened.

There was a vibration behind me, like my rear wheels were driving over well worn rumble strips. My C pillars kinda vibrated, and a deep bass note from the vibration was somewhat audible filling the rear seat area. It is really the first time I've heard it, and it was only under heavier throttle ( 2/3+ ).

It goes away after I drive for 10-20 miles with continued aggressive acceleration. Did it again today and it was a little below zero out. Is the rear diff fluid so thick it's causing bad vibration in it?
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Old 01-07-2014, 10:25 PM   #2
some dude
Scooby Specialist
 
Member#: 100300
Join Date: Nov 2005
Chapter/Region: MWSOC
Location: MIC|-|IG/\N
Vehicle:
06 WRX
CGM

Default

Motul Gear 300 in tranny and rear diff

Last edited by some dude; 01-07-2014 at 11:08 PM.
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