Infamous 30 to 10mph oscillating vibration

Hey Folks

New Tacoma poster has a rolling on-off vibration, felt mostly on deceleration. There is also a seemingly related vibration when breaking thru this zone.

I've read that dropping the carrier bearing with spacers and/or replacing the driver side CV needle bearing with a bushing should work.

I wanted to check with this knowledge base before proceeding with any mods.

Any information is appreciated. TIA!

 

Put it in 4wd and see if it goes away.

 

Thank you, I'll try that, but what does that indicate?

 

OMGitsme...I received more info in the email, than the thread...guess that's SOP? ..and thx!

 

Huh? Anyway if it goes away it's your bearing..

Oh that's because I edited it..

 

Mine done that since I got it although leveling made it worse. Its a front diff aka needle bearing.

 

That happened to my truck too. Pulsing while coming down offramps and such. I turned my disc's and it went away. It's been two years now without that issue. Prior, I put up with it for two years lol.

 

Discs were warped on mine too but thats something obvious because you hit the brakes and everything shakes lol

 

What about the technical service bulletin that covers this issue under the powertrain warranty ? There is about $3000 bucks in free parts should your truck comply .
PDF is listed below

 

Nice to know, I thought my disc were warped but I barely have 8k on the odo

 

Manuals unaffected? Looking at the part list has me asking how they are excluded. I have 600 miles on a 21. I get what feels like mud tire shudder when decelling. Like you can feel the treadblocks...except the stock tires really don't have any treadblocks to speak of?