Thanks everyone. Heading to mechanic. Very helpful info. Xc70 2004 114.000 miles

 

I am having the same problem on a 01 s40. Has any one bought a axle assemble from auto zone or napa parts??? what does everyone think

 

Well this is funny! Two and a half years later I still have this problem, just gave up on solving this the last year and a half, but back to it now and re-found this thread!
New tires with a road force balance solved over all roughness and made it smooth downhill, but kept vibration over 55mph on the flats and even worse going up hill.
Replaced all the struts and shocks, upper engine and lower tranny stabilizers, new Empi axle on the right, 90k Volvo axle on the left and IPD inserts in the front subframe bushings. None of this made any difference except the inserts making the ride harsh. Oh, did remove my AWD rear axle, but that did nothing, but give me 2 more mpg's.
Down to replacing the lower control arms and anything else looking bad in that area. Will take a look at the real engine mount too. I don't have classic LCA issues of it diving to the left or right on braking. Rough roads will really slam the front end though, like I have worn struts and no bump stops.
If I can ever solve this, I would be happy with this car. :-)

 

thanks this massively helped it was on my Volvo s40 I had done the same thing . Bloody t5 power 🙄

 

yes I understand it does cost a little more to maintain but this is my first European car and I gotta say European is a million times better especially than general motors, hopefully I didnt just j I'll nx myself by saying that lol. But man I was so surprised when I actually got to look under the hood and find out all the safeguards they put in pl lace to help keep things from catastrophically failing, I'm positive my next car will be a volvo as well

 

Google brought me back here also with another issue. The shaking described here when accelerating is what my car is doing as well (2004 S60). It happens a tiny bit at accelerating but 60+ trying to accelerate, it's quite pronounced. The only added detail to mine is I notice the check engine light comes on when the shaking is at it's worst. It stays on for about 5-7 seconds, and then goes off. I also feel like when I'm pushing down the pedal and the shaking is bad, the car is incapable of gaining speed...almost like it's being held back. If I baby the car, I can get as high as 60 but that's when the problems really begin. Any thoughts/clues regarding the check engine light? It seems most comments here point toward the axles but I wasn't sure if the additional detail may be a clue for something else.

 

Need to get your codes checked from the light coming on. Shaking should not effect power, but bad running motor could give rough feeling.

 

I wanted to give an update. I got it checked out. It was ignition coil, and my spark plugs also needed replaced as well. The next time I started my car, the shaking was even while it was idle. All seems well now. $466.

 

Just made an account to sa thank you! Had the same problem described here and got the front right axle/cv joints replaced (as the were kaput!) and it's like a new car!