I had a similar problem with a 2005 s60. Mine turned out to be (I spoke with someone at Volvo in California on the design side of things) a sealing problem with the gas cap that was letting moisture in. I ran it down to empty and put dry gas in. Thereafter, I was advised to screw the gas cap in at l...

Good Morning! Car has 100K; trouble started at 90K back in February. Misfire in 3rd and 4th gear. Sluggish acceleration. Car performs better when gas is punched. *Very* intermittent soft "surging" and hesitation when shifting. Eventual transmission problems (more on that in a minute.) All ...

No one answered as of yet, but I'm writing to state that, embarrassingly, it was more a cold start/turbo issue (the dealership also switched out the top engine mount to a newer, post-2007 model that is more stable.)

Thanks,
Stacey

Just bought my (5th) used Volvo yesterday. :D It's very smooth and feels great while in gear. However, at idle there's a distinctive rattle. On my S60, it rattled in 3rd gear. Turns out there was air in the fuel tank. I have an extended warranty, but the dealership are "we tested it in diagnost...