The air conditioning compressor on the wife's 2009 Civic LX coupe is engaging once in a while when no cooling mode or defrost mode is selected. I first noticed this as what I thought was en engine stumble at highway speeds during a 6 hour interstate drive we were regularly making. After starting to pay better attention, I noticed it was happening at irregular intervals all the time. Maybe 2-3 times an hour that I could notice on highway drives. After a while, I started to get the feeling it was the AC compressor.
Finally, while idling near a curb with an outside temperature of 3F, I heard the famliiar click and condensor fan spinning up for about half a second. All this has been taking place in the regular heater mode with the floor vents selected.
Is there some function in the Civic that cycles the compressor once in a while just to keep it lubed up or something? Or do I need to start looking for wiring issues.