04 SR5 humming from rear

02-11-2014, 10:11 AM
Starts humming at around 25mph and gets louder and higher pitched as I accelerate. Noise stops when I turn right so I assumed it was the right rear wheel bearing. I replaced the hub bearing and the noise continues. Also had the tires checked out and they seem to be fine. Anyone else experience something similar? :banghead:

02-19-2014, 09:05 PM
Have you looked at the diff?
Maybe a pinion bearing or something.
Start by checking the gear oil level in it.

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