my heater is not workin. on startup its cold. i drive down the road its cold. after the jeep heats up completely it comes on a little bit, but its still not as hot as it was before. ive put in an airraid cold air intake and i thought it was cause of that but lately ive been thinkin its a clog in the hose. someone help me out i go to appalachian state and im freezing my *** off!