Running my A/C yesterday, I noticed that I only have two fan speeds: Slow and medium. The fan speed switch - the one on the left side - has three positions: Hi - Med - Lo. But the actual speed of the blower is the same on the "Hi" setting as on the "Med" setting. I determined that, by switching the ignition to the intermediate position and running the fan without starting the engine. I can hear a distinct difference in fan speed between "Med" and "Lo". However, there is no difference between "Med" and "Hi". Please check your A/C and tell me if you have three speeds. Thanks!