have no heat at all but when i drive the car over heats on 1998 Plymouth Neon

my 1998 neon blows out cold air and when i drive it the car over heats

1 answer
first checkk the coolant level. if it is low, add as necessary and have it checked out for leaks. if it is full, look for a bad thermostat or a possible blown head gasket. remove the oil cap and look for a milky substance. this is an indicator of water in the oil. if this is not addressed, then severe damage to the bearings will result.