I am running out of ideas and the shops have no clue for me.
I have a steering wheel vibration starting around 40 and higher. It gets worse when I accelerate through 50-55mph, that is to say if i go slow though this speed it is not as severe a shake. There is no problem when braking. This is the current problem.

Here is the background. I do not race this car. It is my daily driver.

-It started with a shake around 37mph, this would be more severe with more torque at that speed. I took the car to local shop. The tires were balanced and alignment was done. Rotors were ground down at this time. They recommended having the right axle shaft replaced.
-I got both from Ultrarev.com an aftermarket performance maker.
This changed the speed down to 20mph. There was still a high speed shake but that was not torque dependant.
-Purchased new tires
-Acura checked the car over and saw the aftermarket parts and would only say to have them replaced.
-I had the factory shafts checked by a axle specialist. He took them completely apart and ran them on his test rig. No problems.
-I put the factory axles back on and have the problems list in the beginning.
Please help!

 

What tires are you running?

 

i had the same problem with my first tsx, turned out the rims were bent which caused uneven wear on tires...sold car and gave new owner wheels and tires for free, bought salvaged tsx and i'm happy as a bug..19''type c-2 three piece, eibach prokit with tokico's, cusco strut bar, dc header....ice box intake..

 

I had some crappy BFgoodrich tires on there, they only lasted a year. So I have some Bridgestone Turanza Serenitys on now.
I have had both sets balanced many times, no issues. Switching tires front to back doesn't not change the shake at all.

 

deff do check for bent rims, and out-of-round tires. next check for bent suspension parts, ever in an accident?

 

I check for bent rims, and have the tires checked. I have not been in an accident, did it a monster pot hole that always makes me wonder if that did anything.

 

the problem is very similar to what i went through. my problem was that the the double wishbone suspension components were loosen due to drving for 30k miles and the dealer never bothered to check for loosen bolts. when i got my alignment done at a very respectable shop, they retightened the bolts for the front suspension. also the rear was making clunky noise around 23k that ended up being loosen rear suspension components. the dealers never check for loosen bolts and my mechanic said that it has to be regularly checked.
i hope this can help you.
-Chris

 

Bolts don't just come loose on their own...if you had loose suspension bolts, it would make me highly suspect of an incompetent mechanic

 

i have the same problem, the shaking is around 50-65ish.. but at like 80 it fine. turn out one of the rear rims is bend.. replace it and the vibration is less now..but still there around 60ish.. hopefully new rims and tires will fit this.

 

It ended up being a slightly bent rim, which they road force balanced out. The right factory axle was bad even though a axle guy said they were good.
1000 dollars down the drain but it is fixed.
Just wish someone had good OEM replacement axles.
Thanks for your help.

 

im going to try replacing my axles now hopefully it fix the problem.