1. A Jeep Grand Cherokee has multiple codes and problems. 2. A 2011 Saab Turbo has lean engine codes.. 3. A 2017 Volvo has a cold start misfire. 4. 1993 Jeep Grand Cherokee Vents blow out the wrong places. 5. 2004 Audi long crank hard start.  6. 2011 Ford F150 Hard Start no shift position indicator on dash.