From cold, if I use the kick down on a long stretch - it should shift from 2-3-4-5 and then brake. But twice yesterday, the revcounter (in 2.nd) goes up til 5.000 and sort of bang left and right between 5000-4800 for two seconds, before it finally goes to 3.rd (4.th and 5.th goes fine).
While the revcounter goes left/right there, my instinct tells me to shift myself up to 3.rd on the steeringwheel, but it should do this fine by itself.. (remember, the engine isn't really cold, as I always let it sit for a few moments to let the oil spread around before revving..)
So, a tranny oil change + filter change maybe? These trannys "never" fail, do they?
I don't always believe everything I see on tv, but on "Wheeler Dealers" - Mike China proved that an oilchange for the tranny did the trick on an early Boxster S that slipped in the gears..
2:50 in:
Wheeler Dealers - Porsche Boxster S by carvideoseu - Car Videos on StreetFire