JEEP LIBERTY AIR CONDITIONER BLOWS HOT

I Have Already Changed The Blower Motor. I Can’t Get The Air To Blow Cold Or Out Of The Other Vents. Under The Hood The Wires Are Cold So...

I Have Filled With Coolant And Have Checked The Fuse And Relay. The Serpentine Belt Looks Good.

My Air Conditioner Will Sometimes Blow Cold Air And Then Starts Blowing Hot Air