I have a 2002 S60 T5 5spd Auto. w/ 71k miles. while accelerating past 40 mph the engine willvibrateand shakeinto thecabin. I can feel the vibrationon thethrottle pedal as well,once up to speed the vibrationceases.It runs smooth and straight (tires are balanced and alignment is straight)after that until I have toaccelerate again. runs smooth at freeway speeds but vibrates when I accelerate to pass.The engine revs freely with no hesitation and the trannyshifts smoothly through all gears.There is no clickingin the CV jointsduring tight turns. It seems like the vibration reverberates from the right front wheel but hard to pinpoint. Don't know if this is related but when I go over bumps with the right wheel, I can feel feedback coming through to the gas pedal.

Any ideas?

 

check the wheel bearing, and check the engine upper/lowermounts.
could be a bad axle.
tech will have a better explanation for you.

 

looking at older threads. wondering if it could be the inner CV joint. It is smooth at idle and under light acceleration below 40.

 

Could be that...check it.

 

thanks for the quick response. Any idea on cost to repair the CV joint on these?

 

IPD sell the whole axle for $175 and they also have a CV tool for $30.
http://www.ipdusa.com/Volvo-S60/Tran...p-74-405-3901/
You can also try http://www.fcpgroton.com/

 

Could very well be the axle or a motor mount.