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rear gear howling noise V70-XC70 2003

posted by  elroy on  Fri Oct 30 08:54 CST 2009
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last visit: Mon Dec 7 11:07 CST 2009
[RELATED]

The awd went to fwd, intermittently at first then quit altogether about five months ago. Now it started making a howling noise from the rear similar to an old truck rear end gear whine. If I hold the speed constant the noise is constant if I slow down it is lower and louder if I speed up the pitch is quiter and higher.

These may be unrelated, but when asking around about the awd quitting, someone said that a bushing in the third member may have cracked. I do some work on cars but I have no idea what a third member is. Help I can not afford a big diagnostic bill now.








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    rear gear howling noise V70-XC70 2003

    posted by  KlausC on  Fri Oct 30 11:27 CST 2009
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    last visit: Fri Oct 24 10:15 CST 2014
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    Most likely the carrier bearing is kaput and needs to be replaced. If you don't NEED awd, just disconnect the propeller shaft and store it on the garage floor. Easy to do, but it is heavy.

    Klaus
    --
    Proud owner of a 220S. If I had more room, I would have more Volvos.








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      rear gear howling noise V70-XC70 2003

      posted by  elroy on  Fri Oct 30 11:38 CST 2009
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      last visit: Mon Dec 7 11:07 CST 2009
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      Is the carrier bearing inside the pumpkin? Is it hard to replace? Would the bearing affect the rear drive wheels as for my loss of awd? Thank You for your help Klaus.








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        rear gear howling noise V70-XC70 2003

        posted by  KlausC on  Fri Oct 30 11:50 CST 2009
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        last visit: Fri Oct 24 10:15 CST 2014
        [RELATED]

        You are refering to the viscus coupling, just forward of the rear differential. The VC could have died, and in that case cannot be repaired. But the VC can be used from a donor car. Local salvage yards sell them for around $400.

        Klaus
        --
        Proud owner of a 220S. If I had more room, I would have more Volvos.







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