Having problem with my heater. Blower works fine and heater core gets pretty hot too but for for reason it won't blow hot air ( just cold freezing air) and winter is coming around need to get it fix. Took the car to a couple of mechanix but still have the same problem. Does anybody have any idea? Please help. Thanks.

 

Replace your thermostat and make sure the heater core reaches the temperature that is specified. You might need to buy a Chilton's to get this spec. I don't know it off hand.. Or you can try Google. You might have luck just searching the net for Integra heater core nominal temp.