I'm looking at buying a 2004 Volvo S60R with an automatic transmission in near perfect condition inside and out. It has a great maintenance history with 87,000 miles. I test drove last night and noticed right away the transmission clunks and the car bucks a little when it down shifts from 2nd to 1st gear. It shifts great at all other times. The selling dealer said they had disconnected the battery that day to do a minor repair on the seat and he thinks because the battery was disconnected the tranny was "relearning" it's shifts points. I then drove it 60 miles to my local Volvo shop to have it inspected. On the way there the transmission smoothed out was was acting perfect. I could not get it to clunk or buck. Any ideas? I'll know soon what my Volvo shop says. Many thanks!