sounds like you need some freon.
sounds like your freon may be low
These are classic symptoms of a failed blend door actuator motor.
If its been recently charged there maybe moisture in the system.
Low coolant?Bad thermostat?System airbound?Bad water pump?
Refrigerant leak? Blown fuse? Compressor not starting
Obviously you have a cold if you are constantly blowing or you have something spicy or you are crying
if its blowing, but not blowing cold its low on coolant. it takes r134a.
BCI group size 65 ( 650 cold cranking amps , CCA )
The heater is blowing out cold air only
sounds like the thermostat is sticking
It's due to your car not having freon go and get it charged. The cold air is from you driving!
Blowing Hot and Cold - 1989 is rated/received certificates of: Australia:M