She burns more gas with a/c off????

[pitbulldell]

I have a 95 ex and over the years i have noticeed that on the highway takin the 80 mile trip to my parents my ex will drink more gas with the a/c off then with it on.Not much more but enough to notice.Which i dont mind but its just a question that has me wonderring why is that.and no i dont have the windows down when the a/c is off just the vent on to let some air in.I always keep up with the tune up stuff.

Also i want to say thanks to all the helpfull post the fellas on here put up. i just had to swap out my heads on the ex when it blew a radiator hose, ran hot and cracked one head and blew the gasket out on the other. I found a good set from the salvage yard had them checked out and did a search on here and printed out the serveral posts on replacing the heads and over the weekend a few weeks ago replaced them and she is now running great.even after the head swap it still drinks more gas with the a/c off.

 

[yavapaires]

All I have to say about this is,"who knows the reason why?" On a recent trip to AZ and back, I got better fuel mileage in the mountains and across Northern AZ thanI do in KS and NE?????? And, the torque convertor wouldn't lock up a big part of the time. Go figure.

 

[Falconkeeper]

Have you checked the thermostat? The AC radiator will heat up the coolant in the radiator, so the engine should be running marginally hotter with the AC on. Just a thought.