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AWD - Right rear shock failure, poor - dangerous sway on highway

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Right rear shock failure, poor - dangerous sway on highway V70-XC70 2012

Hi All:

My beautiful 2012 Volvo XC70 Platinum was only driven on salt-free, paved Maryland roads since new, that is, until I purchased it and drove it north to salty Vermont, with its rough backroads that I find myself on everyday. The car drove beautifully on the 15 hours drive to VT from Knoxville, TN where it was purchased. In only 2 months time, I have developed a loud knock or pound when I hit a pothole with my right rear wheel, The car is now really bad on the pavement at 65 mph plus highway speeds, very unstable in quick turn situations. I am pretty sure this is due to the failure of my right rear shock. I just purchased 2 new OEM Volvo rear shocks from FCPEuro. Hoping this cures the problem.

Anyone else had a similar handling experience to mine? Any and all advice would be helpful.

Lastly, I am toying with putting on an IPD rear swaybar, Anyone done this on this P3 XC70 and is it worth it?

Thanks.
--
John Brabant 2012 XC70 T6 Platinum





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    Right rear shock failure, poor - dangerous sway on highway V70-XC70 2012

    Good point about the sway bar might be broken, the sway bar on my 855R broke as well.

    I do not remember any ill handling, there was some noise.

    To some extent, a broken sway bar may not affect the car at all, depending on where it has broken.

    I might also suspect something wrong with the delta rear suspension, as it was designed to steer the rear wheels under some conditions.





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      Right rear shock failure, poor - dangerous sway on highway V70-XC70 2012

      Thanks all. Now that the weather is warming somewhat up here in Vermont, I will get under the car to see what is going on. Will let you know what I find out.
      --
      John Brabant 2012 XC70 T6 Platinum





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        Right rear shock failure, poor - dangerous sway on highway V70-XC70 2012

        Sounds like the upper mount may have snapped. If the coil spring broke your car would look lopsided and the rear fender would be just above your rear tire.

        To service this you will need to take the back part of the trunk apart. Both side panels and remove the floor area.
        Once that is done you will need to undo the top three bolt nuts for each shock.
        Then loosen the lugs on the tires, jack the car up and put it up on jack stands. With the tire out of the way this will help you have better access to be doing the work. Once tire off and car is on up on jacks.
        Then loosen the bottom bolt to the shocks. the shock should just drop through the coil spring, watch the upper mount it may snag on the coil spring.
        Once that is out, install the new shock and mount in reverse order here.

        To answer the question on the IPDUSA Anti Swaybar. The original Volvo unit is a 21mm unit. This was installed for US cars only for a softer ride. Over in Europe they are thicker for the Stiffer ride.

        The IPD unit is a 25mm unit. It will stiffen the rear of the car up, giving you better cornering ability and be more stable with a load in the back than the OEM setup. If you do change that out you might as well change out the two sway bar links at the same time.

        Any questions, let me know. I can be reached via email at rpiescik@weareoil.com

        I have been a volvo owner for almost 25 years and do majority of my own service repairs on my cars.

        I hope this helps.





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    Right rear shock failure, poor - dangerous sway on highway V70-XC70 2012

    My guess is that the IPD rear sway bar is designed to replace the factory sway bar for improved handling so it is more likely to be thicker than the stock bar. This will make the rear of the car ride harder. That is the trade-off for better handling - stiffer ride.

    I agree with the others. Probably a broken shock mount. Happened on my 850 too. Could be a broken spring.

    One more thought... Check the mounting parts on the factory sway bar. Perhaps a sway bar mount broke?
    --
    Will I buy another Volvo??? We'll see....





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    Right rear shock failure, poor - dangerous sway on highway V70-XC70 2012

    Sounds like a broken shock mount to me as well. Our '95 855 had that happen six months after we got it - It was not rusted, and we did not recall any incidents that would have damaged it.

    I could hear the top of the shock hitting the bottom of the car

    As for a rear sway bar - our '96 855R had a rear sway bar.

    The suspension on that car was terrific - In Michigan, I had to swerve around a motorcycle that was in the center lane of a 3 lane road as I passed a truck at 70 MPH - I couldn't believe that we did not spin. I was in a proper passing lane, the cycle, stopped to make a left turn was not!

    While the handling was great on that car, the ride was not - the car would react strongly to ANY bump - I told people that it would bump when I drove over the shadow of a telephone pole! On bumpy Vermont roads i doubt you will be happy for long if you add a rear sway bar.

    Despite that, we drove that beautiful car for 11 years - by that time it was 17 years old.





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    Right rear shock failure, poor - dangerous sway on highway V70-XC70 2012

    Salt doesn't work that fast! You might have a broken shock mount. Have a garage look at it, if you can trust them. A dead shock doesn't make noise, the wheel will just bounce up and down when unweighted. Or could be a broken spring????
    --
    Keeping it running is better than buying new





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