Assuming RAD stands for radiator . . . Chances are your thermostat is stuck closed. Replace it.
My blower would blow cold air at idle & engine would start to overheat, I replaced my thermostat & problem solved.
When the car is off. sounds like a short in the blower or short in the wires
at the beginning it will be cold, but it will warm up as you start driving
if its not blowing at all, your blower motor is bad. if its blowing but not cold, you probably just need a shot of coolant. tour blower motor is norm located under the dash on the passenger side, below the glove box.
your blower may be bad. your ac clutch may be bad
Your furnace may be blowing cold air and not shutting off due to issues with the thermostat, a malfunctioning heating element, or a problem with the blower motor. It is recommended to contact a professional HVAC technician to diagnose and fix the issue.
possibilities include thermostat stuck open (temp gauge would be reading cold), low coolant level, blockage in heater core, or temp door in dash broken(very likely on this vehicle)
the heater matrix is blocked
You will need to adjust the temp gauge from cold to warm. Its located right on the middle vent(where the air blows out).
Your furnace may not be blowing cold air because there could be a problem with the thermostat settings, a clogged air filter, a malfunctioning blower motor, or low refrigerant levels. It is recommended to check these potential issues and contact a professional HVAC technician for further assistance.
13.5-14.5 when running.
sounds like the thermostat is sticking