2005 honda accord coupe v6 140000 miles, front shakes a little, thinking of changing struts, they look original . don't know method of trouble shooting.

 

Shaking is usually an unbalanced wheel. Swap the wheels front-to-rear & see if the shaking moves to a different corner. If it's time for a normal tire-rotation, your rotation pattern should be like this:
Move rear wheels diagonally across to the opposite side front.
Move front wheels directly back to the same side rear.

One way to test the shocks/struts is like this:
Car on level ground, like a parking lot that doesn't have much slope.
Grab the front bumper right in the middle & bounce the car up & down. The front should bounce up & down straight, without the car rocking right-to-left.
Suddenly let go and the front of the car should quickly come to a stop - also without twisting.
Same for the rear to check the rear shocks.

Also, the shocks shouldn't be leaking fluid, regardless of how this test goes.

 

thanks, it seem like it lacks a lot of damping.

 

So it continues to bounce after you let it go? Or just a feeling from when you're driving.

When you bounce it and let go, it should go beyond just a bit, then come back without bouncing multiple times.

 

tested as you suggested, tested good. just the feeling of it when driven. the steering wheel isn't centered, centered is a little to the right. like it is out of alinement.

 

Hard to say without driving it firsthand, so maybe new shocks would help. Some people (me included) like a suspension that's a bit stiffer. So if that's you too, you might find new "stock" shocks might not change it much. New shocks that are a little bit on the sporty side (without getting too extreme) might be the thing you want.

Centering the steering wheel should be a normal part of a suspension alignment. I suppose Accords (like most cars anymore) the steering rack has the stops for the limits of steering. So when the steering wheel isn't centered the fix is to lengthen the tie rod on one side & shorten the other by the same amount. Then the alignment guy should re-check the toe measurement.

 

thanks, so if i center the steering wheel, then add one turn to tie rod and subtract one turn from other side. i could center steering wheel my self ?

 

That's the idea, but 1 full turn might be too much. How far off is the wheel when you're driving straight down a road (especially a road without much crown).

First thing first... check the travel of your steering wheel. Either put the front up on stands or do this while driving slowly in a parking lot.

Turn the steering wheel completely to full lock in one direction & either mark or remember it's position. Then turn full-lock the other direction and count the turns. From the center position, it should be the same number of turns, and the final position should mirror the final position in the other direction. Just to confirm that center is really center. If it's not, then something else is happening. I'm not sure but I think the steering wheel won't install in the wrong position. The spline connections at the top & bottom ends of the steering shaft are keyed, like it's missing one spline or something like that.

Assuming that center is really centered, then adjust each tie rod the same amount in opposite directions (like you said). It'll be some trial & error to get it centered.

But...! If it still feels funny, then some of the other alignment angles are probably off. Caster, camber, & steering axis inclination can be messed up along with the centering.