Have you checked the thermostat... Sound like a blocked radiator .................PS
yes it can, but dont really recommend it. if your car starts to over heat and the heater core not there you can not use the heater fan to help cool it down, also if you live in an area where it gets cold you wont have no heat.
because its still hot and needs to cool down
Perhaps it needed to cool down.
it has a partially clogged heater core.replace the heater core
These heaters contain insulation that retains heat (as opposed to the newer style that reflects it back). As a result, they heat up during operation and take a long time to cool down. After using the heater, shut the heater off and let the pump run for at least 15 minutes to allow time for the heater to cool off before shutting off the pump.
turn the heater on full blast, that will make use of the heater core to help cool things down.
Check the fuses.If not the fuse, test the resistor down by the blower motor.
nothing wrong, it just stays on to help cool the radiator down.
You don't you can change them while the car is still hot its no problem.
It will cool down, nothing is wrong with it. It is just air.
because it needs to cool down if it gets too hot
To bypass the heater corer in a Chevy Cavalier, disconnect the heater core hoses at the firewall. using a hose splice available at an auto parts, slide the hoses on the ends of the splice. tighten the hose clamps down. Check the coolant level in case it is low due to losing any during the procedure. Wash the ground thoroughly because any coolant left is toxic to animals.