[davidg]

The "Great Red One" (photo hopefully attached) with 53000 miles makes pronounced "thud" when downshifting in a climb or when turbo kicks in. Sounds like its coming from the back. Anyone have an idea as to what's up? Thanks! [attachmentid=68]

 

[Tech]

Check the driveshaft and the rear C/V joints.

 

[JBevier]

My 2000 V70 XC did the same thing - down and up shifting from overdrive into third. Took it to Best Volvo in Rochester, NY - the only dealer in town - they flushed the transmission and it now runs silky smooth - a pretty amazing improvement IMHO. Odd benefit - the car just glides easier than it used to. 58K miles on it. My best - JBevier

 

[Tech]

Thanks for posting that I forgot all about it.That "Tech note" came out just before I left the dealer.