I have been having some engine/electrical issues with my 2003 saab 9-3 convertible. It started with the check engine light coming on I had it diagnosed as a map 2 sensor and transmission output sensor. The light went off and the car ran fine. Now the light is back on and the engine stalls out at random times (while accelerating, at idol, and now loses power during full throttle. It bucks on the highway). Today while losing power blue smoke comes out of the tail pipe, but only during the power loss bucking. I also notice when there is a power loss or skip/bucking the turbo needle goes into the yellow/high mark. I am going to take it to a repair shop soon but can anyone give me some advice on what this might be? Also sometimes while driving when the bucking/skipping/power loss happens the gear indicator light on the dash goes from drive to neutral to reverse and park intermittently. Help pls! Thanks in advance!