Well, I just got my car back from my local mechanic. (He is pretty good working with SVXs!)
For everyone interrest,my problem was a worn out crank angle sensor.
It cost me about 300$ Can: (80$towing/ 100$Used SVX sensor/ 65$ labour/ 35$engine code test/ Taxes)
Many thanks for your help guys, it was really appreciated. I simply hope that this thread will help other people to repair their own SVX!
Thanks!