Transmission issue?

[Ashleysteven]

I have a 2007 limited 4-wheel drive V-6 with 139k miles and lately when I am accelareating I experience a "shudder" on occasion between 25-30 miles per hour. Does anyone have any idea what this could be ?

 

[yotav8]

I have a 2007 limited 4-wheel drive V-6 with 139k miles and lately when I am accelareating I experience a "shudder" on occasion between 25-30 miles per hour. Does anyone have any idea what this could be ?

Drive shaft?

 

[CookieRoe]

I have a 2007 limited 4-wheel drive V-6 with 139k miles and lately when I am accelareating I experience a "shudder" on occasion between 25-30 miles per hour. Does anyone have any idea what this could be ?

Check out:
http://www.toyota-4runner.org/4th-gen-t4rs/72998-rumble-strip-transmission-issue.html#post622855

Having the fluid changed seems to help. Good info in the thread provided.

Good luck!