so its that time of year again [ winter] and my car is doing same thing again, service traction,service e.s.c. , reduced engine power and engine wants to stall, it shakes etc.managed to get appointment at dealership and they actually diagnoste for free ! well i think because i told him chk engine light was on when i made appointment, but since has gone off.still free from the dealership!? my lucky day i guess.he read codes dont recall o221?,and 0223 perhapes ,anyways told me it was two throttle sensors built into throttle body.which he said you have to replace whole throttle body as sensors are un serviceable! told me part was around 300 $ but when asked how many hours looked under my hood, noticed my car is turbo and seemed to get lost and couldnt tell me how long to replace?! so... anyone else have this issue? how long does it take to replace throttle body,? and any other related info or experiences would be appreciated! thnx!