Steering wheel vibration with engine load?

I need some help on this one.. My 4Runner (2010 Limited 4WD, 193k) gets this strange steering wheel vibration that grows with engine load. Its not directly by RPM. I can be cruising at 4000RPM and it won't vibrate much until I give it more throttle. It really does it bad during engine breaking though. If I take off normally from a stop light I barely feel it, but if I accelerate a little bit I feel a growing vibration in the center of the wheel as the engine increases RPM + HP due to the RPM. My front wheel bearings are new, my driver's side CV axle is new. I replaced the bearings preventively and the CV Axle addressed an issue with vibration and clicking while turning or moving from a stop. I hoped it would fix the big issue and it did not. I suppose I can't say I've "tested" the passenger CV Axle. It doesn't seem bad though.

I greased the drive shaft and U joints the other day and it seemed to get a little better, but those had never been greased before in 100-190k miles, per the previous owner. Its strange because power delivery is smooth. Its not like the car hops or shudders.. Just vibration. It doesn't do it while coasting at any speed only under load. No vibrations at idle. Maybe U joints? The driveshaft didn't seem to have play when I went under and shook it around but that's mostly what I suspect. The truck runs well and I like it, I just do alot of my own work on my trucks and like to fix wear items before they become real problems. This one has me stumped without completely removing my driveshaft and checking it out then.. My current solution is just not ever giving much throttle lol

Any thoughts? Experiences?

 

Inpspect motor mounts?

 

That’s what I was thinking, but Incant remember the last time I ever had problems with motor mounts. But maybe.

I would suspect the ujoints if they’ve never been serviced, but that’s just a guess…based on imagining ovaled out pivots slightly shifting position under load. But I really dont know if thats hiw they wear.

 

Cruising at 4000 rpm?

Yikes, I don’t think I’ve ever gotten much over 3000 rpm even when passing on the highway.