One problem related to gas recirculation valve (egr valve) has been reported for the 1999 SAAB 95. The most recently reported issues are listed below.
Upon reaching my destination after shutting the engine off, I hear a noise which sounds like air escaping through the car's passenger a/c and heating system. Also, the car makes a weird noise occasionally. I am smelling sulfur from the gasoline according to the tappert brothers.