# Subaru Viscous Coupler

**URL:** <https://community.cartalk.com/t/subaru-viscous-coupler/27902>\
**Category:** Maintenance/Repairs\
**Created:** [March 17, 2009, 3:15pm UTC](https://community.cartalk.com/t/subaru-viscous-coupler/27902 "2009-03-17T15:15:10Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![jkanthak](https://avatars.discourse-cdn.com/v4/letter/j/f07891/32.png) [@jkanthak](https://community.cartalk.com/u/jkanthak)\
**Post date:** [March 17, 2009, 3:15pm UTC](https://community.cartalk.com/t/subaru-viscous-coupler/27902/1 "2009-03-17T15:15:10Z")

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2002 Subaru 104K miles manual transmission. It started with fixing the R front axle seal- then within 100 miles developed a hum in R Front- had bearing replaced- still have noise so dealer recommended replacing the transmission fluid. I know the vicsous coupler is bad because of thumping when making hard turns- I was advised that it doesn’t necesarily need to be fixed just that the thumping may be annoying. Could this hum/ rotational noise when going straight be caused by the viscous coupler?