Hi folks! I’ve got a noise that’s driving me crazy that I can’t diagnose. 2006 Subaru Outback, 2.5 naturally aspirated, manual transmission with 220,000 miles.
At about 45 mph and higher, a loud sound that sounds like road noise begins. A constant rumble, not a howl or ticking sound.
- It gets louder with the car’s speed (not engine rpms).
- The frequency increases slightly with speed, but it doesn’t seem like a 1:1 scaling of speed to frequency.
- Sounds like it’s coming from below the driver’s seat, but it’s hard to locate.
- The noise goes away if I turn the steering wheel to the right, like on a highway exit.
- Noise continues if I shift into neutral.
What I’ve done:
- Replaced all 4 tires (they needed to be replaced anyway)
- Replaced front driver’s side wheel bearing
Anyone have any ideas? The only thing I can think is that I replaced the wrong wheel bearing… But it definitely sounded like it was coming from the driver’s side! Anyone have a yea or a nay before I spent another Sunday afternoon messing around with a slide hammer? The bearing assembly I removed appeared to be in good shape, and I think I the play I found on that wheel just means I also need new tie-rod ends. Is there anything else that would cause this sort of noise?