What is the noise coming from the rear end of my Forester

Asked by Guru21QQV Feb 28, 2020 at 09:39 PM about the 2005 Subaru Forester XS

Question type: Maintenance & Repair

I recently bought a 05 subaru forester
and there's been a noise like a pulsating
howing at all speeds starting from
about 25 ,30 MPH and the sound
increases as the vehicle increased as
well. I don't know how to diagnose or
start this troubleshooting so any
assistance would be appreciated

2 Answers
48,700

TheSubaruGuruBoston answered 4 years ago

Highest probability is a (or both!) RWB. U-joints? Nope...but nice painting. Diff? Unlikely, but possible. It can be helpful to have someone sit midway in the rear seat and try to determine left or right side, but that's a notoriously ineffective discriminator, as the sound travels across the unibody. Good wrenches will use a stethoscope or long screwdriver to "hear" the spinning bearing while running on a lift. Be prepared to eat both sides if a mistake is made if both sound pretty loud.

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