the manual says that when you turn the air conditioning on the 'econ' light will go off. so when you stop your engine won't turn off. i did see this in practice a few times on my civic. when turning on the air i immediately did see the econ light go off much like when i turn on the front defroster. but starting this past weekend when i turned on the air conditioner the econ light did NOT go off. and when i would stop the engine would turn off. i know the air was indeed on as it came out of the vents a lot cooler and a lot quicker than by just using the fan. so my point is that it appears that i have the best of both worlds: using the air but still having the engine-idle function working. has anyone else seen this? one thing though is that i haven't been using the air conditioning for very long. i usually just use it for a a few minutes to cool the car up quickly. then i switch to the fan. but i still think this is strange. yet good