rough idle and rougher at cold start

There are many reasons that your SAAB could run rough. Find a SAAB specialist, you need to make friends with one. In the meantime, check the ignition system for problems. Here's a directory link for you: https://repairpal.com/saab-repair-in-knoxville-tennessee

We will see if we cant run some live data on the Vehicle with our diagnostic tools and link with saab and see if we can find your problem please inform the service manager when u call that u were sent by repair pal post. and talked to Bryan