Does turning off the AC help fuel economy?
I have personally seen the effect of the air conditioning (AC) on driving performance. It’s great. One requirement for my next car was that I didn’t see the RPMs jump & the engine complain when I hit the AC button. This car passed with flying colors. It’s hard to notice when the AC compressor is running at all, either by sapped power when driving or noise from the engine. In fact, it is more beneficial to keep the AC on, because the computers do a better job of monitoring it that you can. According to posts by ctrlz: The 2003 9-3 has a new and sophisticated variable displacement compressor. This means the amount of coolant moved by the unit can be adjusted based on evaporator heat load. Older reciprocating type compressors were either on or off, and that cycling effect was noticeable particularly at low rpm. As far as I know, it’s one of the first production cars to have these. The system incorporates multiple temperature monitors. With less heat load, the evaporator requires less liqu
I have personally seen the effect of the air conditioning (AC) on driving performance. It’s great. One requirement for my next car was that I didn’t see the RPMs jump & the engine complain when I hit the AC button. This car passed with flying colors. It’s hard to notice when the AC compressor is running at all, either by sapped power when driving or noise from the engine. In fact, it is more beneficial to keep the AC on, because the computers do a better job of monitoring it that you can. According to posts by ctrlz: The 2003 9-3 has a new and sophisticated variable displacement compressor. This means the amount of coolant moved by the unit can be adjusted based on evaporator heat load. Older reciprocating type compressors were either on or off, and that cycling effect was noticeable particularly at low rpm. As far as I know, it’s one of the first production cars to have these. The system incorporates multiple temperature monitors. With less heat load, the evaporator requires less liqu
