I am having an issue with jeeps a/c. At first the blower would only blow on one speed. I replaced the blower motor resistor, that didn't work. No i have just replaced the the blower motor switch, this worked for the blower speed. The air has just began to blow warm, so I hooked a recharge kit up to it, but it is showing that the freon is overfilled. The compressor is working, what is causing the air to blow warm????