I need some advice. My 89 300e shakes significantly when idling in gear but not when it's in park. It has refused to start on occasion (especially if it's wet and cold outside), and has has stalled completely while running with difficulty restarting. When it first starts up, sometimes I can almost floor it before it will get up to second gear and the rpms seem way high but with no go. It also has trouble climbing hills. Any ideas!?