I realize that as cars get older they tend to be a little more resenful of the air conditioner, but it seems to me that the A/C is taking way too much power out of my engine. It is at 118,000 miles and that's pretty old, I guess. I just changed the spark plugs in it and it helped a little, but not enough. You can really tell a difference between when it is on and when it is off. Any suggestions?

 

i think the pullys like the Unorthodox Racing Pulley are supposed to help with this