Hi guys I just started expieriencing a problem with my heater the problem i'm having is that when I'm driving my heater works fine but then when I come to a stop light and sit there for a little bit instead of heat it starts blowing cold air but when i start driving again it starts blowing hot air again like it normally should if anyone has expierienced this or knows what it is please let me know thanks

 

What is your tempatrue gauge doing? It may be your thermostat stuck open.

 

yeah, yes the temperature gauge to see anything not normal. Was outside temperature cold? check to see if you have the "MODE" from the A/C on..
no, i haven't experience on it but recently my 04 coupe temperature gauge went over the "red" zone, caused by the water bump.

 

no guys my temperature gauge is fine

 

Sounds like when your driving a shutter opens up, Normally for your heater they take the heat from the engine and run it to the car. For the ac you can close the shutter and keep the air circulating in the car.