It actually seems to be most noticeable when accelerating with the manual going from 4th to 5th gear. Once it was in 5th gear it doesn't seem as noticeable. I had the ignition coil replaced and spark plugs replaced, I wonder if the mechanic would have missed something. The lugging/shudder is definit...

I recently purchased my first 2005 Volvo T5 XC90 AWD w/ 84,000 and newer tires. It seems there is a shuddering or lugging of the engine when accelerating, most noticeabley between the 40-60mph. Especially when climbing a hill or steady grade incline. There always seems to be a slight shudder even at...