Yesterday I am proud owner of a 626 GD Coupe 2.0 90PS BJ ́89. Driving he does really well, especially since he has only 177tkm down. But I also noticed a few defects. -Tacho needle trembles -ventilation goes ne -Controlamp Wipe water always shines -Gurtschloss driver side goes ne -Temperature goes up in the stand(in traffic jam) Can someone tell me what the respective problems are and how they are eliminated?