my girlfriends 1999 c230k all of the sudden seems to be over revving. instead of a smooth shift from gear to gear @ roughly 2500-4000 rpm, the engine will go up to 5500-6000rpm unless i let my foot off the throttle.

seems i have to always back of the throttle to have it shift gears. there is 115,000 miles on the c230k and she just got the tranny serviced at the dealership last week.

any advice would be greatly appreciated
vegas

 

what type of service did they do on the transmission? I had this problem before my transmission completely went bad. Turned out my valve body was dirty which prevented my car to shift properly.