Noise from the rear.. differential?

Hello,

I cant figure out what's going on but there is a slight noise in the back that almost sounds like the videos of the rear differential nose people have been talking about. I can hear it slightly on the high way but when ever I hit rough road or go over puddles it's really noisy... could this be a differential?

 

The problem that Toyota just put out a TSB for is for Howling from the rear diff when feathering the throttle in the 50-60 mph range. If you have other noises outside that range then you probably have something else going on.

 

Its so common their is an entire thread search “rear diff howl” in 3rd gen forum you will find it! Good luck. My gear guy today said gears howl when improperly broken in also


There ya go
https://www.tacomaworld.com/threads...hering-throttle.442341/page-211#post-17176866

 

I cannot figure out for anything why a differential would be noisier when going over a puddle.

 

Beats me, but my truck seems like its made of plastic when I go over puddles

 

How does one properly brake gears in?

 

Don't accelerate hard for the first 500 miles or so. No towing for the first 500 miles or so. Etc. It is detailed in every owners manual that few read.

 

So similar to breaking in a clutch.