Classic Saab 9-5 (1997 - 2009)
We just purchased a 2005 9-5 Arc sedan with 72000 miles.
It runs O.K., but the idle is a bit rough. The RPM will increase for a second, decrease for a second, and then steady out. Four seconds later the RPM will increase for a second, decrease for a second, and then steady out. Over and over...