billvon 3,070 #26 January 21, 2009 To amplify your own points: 1) On modern cars, the A/C compressor is disengaged via its clutch during starting, so no issues there. 2) On some older cars, or cars with retrofit compressors, the clutch may be engaged during start. It's a good idea to shut these off. 3) On even newer cars, the A/C compressor is not driven directly by the engine, but rather via the car's electrical system. There is no issue there since the compressor does not load the engine. (Note on 3 - on many hybrids, since the compressor has nothing to do with the engine, you can 'start' the car, run the A/C for a while, then pull out and drive away - without the IC engine ever starting.) Quote Share this post Link to post Share on other sites
ravenhk 0 #27 January 21, 2009 as cold as it has been why turn the ac on at all?pain is weakness leaving the body Quote Share this post Link to post Share on other sites
Rookie120 0 #28 January 21, 2009 Quote Billvon (hence the green). That would have been great if I didnt read it on a monitor that is older than I am at work this morning. Colors do not come through on that ols thing.If you find yourself in a fair fight, your tactics suck! Quote Share this post Link to post Share on other sites