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How's this. You can probably eliminate the tires because you've rotated them and the problem still shows up in the steering. If it was one of the tires or wheels, when you rotated it to the back, you might have still felt the car vibrate, but you wouldn't feel it as much or at all in the steering.
If that bushing you replaced is the one that the drive shaft fits into in the transmission, my understanding is that the the vibes associated with that is usually associated with acceleration. You usually don't feel it on coasting or deceleration.
This points to the suspension (or brakes) somewhere. I'm pretty sure the tires/wheels are not the problem. You stated on accel AND braking. What about coasting. If you took the car up to, let's say, 60 mph and took your foot off the gas, does the steering wheel still shake?
Have you tried finding an empty stretch of straight road or a large parking lot and tried coasting slowly with your hands either off or just lightly touching the steering wheel to see if you can see or feel subliminal shaking then? If you can in that kind of circumstance, it may be as others have stated - perhaps something warped or out of kilter. Brake rotors warped or machined incorrectly at the hub, a damaged hub or wheel bearing. I would assume your indie already checked the tie rod and lower ball joints. I also assume when you replaced the shafts the mid bearing on the right side was checked. Where rotors are warped in the rim area, unless it's a really bad warp you would only feel the shaking when you hit the brakes - unless it's warped just enough that it's causing a slight constant rubbing against the pads so you get a "rub,norub,rub,norub,rub,norub" effect.
If you don't feel/see subliminal movement at low speed, it MAY be a balance issue such as the bad rotor I mentioned in the previous post that was out of balance itself.
There are a few shops that can do "on the car" balancing where the wheel is spun at a high speed while mounted and balanced that way. You'd have to hunt around for that though as most shops are only equipped for off-car balancing.
Rotors are pretty cheap. You might want to just try replacing them (the fronts) and see if it corrects.
If your knuckle is damaged, as in bent slightly, it could feasibly cause a vibe problem, though I would think it unlikely since the tire would still rotate at a constant angle in relation to the knuckle and road, but never say never.
posted by 98.229.226...
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