Help needed. Vibration has me lost

[jgarner14]

hi guys, this is my first post here. I think it’s time to bring in the professionals. I have a 2020 Tacoma Trd off-road with a 2 1/2 inch lift. I have a slight vibration or hum that is in my steering wheel when I am around 2000 RPMs. Now I have a pulsing vibration around 2000 RPMs so it’s super noticeable on the freeway. He used to just be a constant vibration when it was at 2000 RPMs but now it’s like a pulsing vibration/humming noise it doesn’t move my steering wheel or anything. And when I let off the gas, the vibration goes completely away. And it’s more humming seal it’s not like a vibration that would shake your steering wheel.. It’s hard to describe. It’s kind of like a buzz. But yeah, now it’s become this pulsing that you feel in the steering wheel. I would really appreciate any ideas or help on what you guys think this is. I already have the clamshell bushing. I put it in probably less than 1000 miles ago. I don’t know if it’s gone bad already? Anyways, I would really appreciate all the help.

 

[TCOTUE]

Could be a number of things. First thing that comes to mind is front wheel bearing. Since you've already done the clamshell, was it seated all the way?

Could be the axle rubbing on the clamshell, or the axle itself.

 

[drizzoh]

I'd say do the EGCS bushing, but it looks like you already have it. If you installed it and the vibes went away completely and now they're back then it could be related.

But, you lifted the front and the rear 2.5"? Did you space the carrier bearing at all? The driveshaft loves to vibrate on these if it's unhappy. If you lifted the rear and didn't do the carrier spacer I'd start there and then look into axle shims after taking some measurements if you still have vibes.