# Subaru high pitch whine

**URL:** <https://community.cartalk.com/t/subaru-high-pitch-whine/13464>\
**Category:** Maintenance/Repairs\
**Tags:** subaru, alternators\
**Created:** [April 30, 2008, 5:38pm UTC](https://community.cartalk.com/t/subaru-high-pitch-whine/13464 "2008-04-30T17:38:09Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![edtang](https://avatars.discourse-cdn.com/v4/letter/e/b4bc9f/32.png) [@edtang](https://community.cartalk.com/u/edtang)\
**Post date:** [April 30, 2008, 5:38pm UTC](https://community.cartalk.com/t/subaru-high-pitch-whine/13464/1 "2008-04-30T17:38:09Z")

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This sounds distinctly like alternator whine. Perhaps a audio signal wire is too close to a power cable. Or this may be caused by a ground loop. Improper install of aftermarket stereo/speakers/amplifier?  
  
  
  
 Disconnect the speaker harness from the radio. Start the car and verify the whine is gone. Check that no speakers are shorted to the chassis, if so, there is a ground loop.  
  
  
  
 Then try unplugging individual inputs and accessories.  
  
  
  
 And lastly the radio antenna.

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**Author:** ![pawl06](https://avatars.discourse-cdn.com/v4/letter/p/96bed5/32.png) [@pawl06](https://community.cartalk.com/u/pawl06)\
**Post date:** [May 12, 2008, 10:39pm UTC](https://community.cartalk.com/t/subaru-high-pitch-whine/13464/2 "2008-05-12T22:39:13Z")

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I shall try this, I have the same problem…

2006 Legacy 2.5i
