When my car is completely warmed up every once in a while it will start blowing cold air. But not all the time, jsut sometimes. Anyone else with this problem? Do I need a new thermostat? Thanks

 

well i doubt this is it but you can try... check your radiator fluid level if its empty your heater doesnt work because it gets the heat from the fluid as it goes through the heater core ..so maybe its low or something

 

Nope i checked the coolant levels and they were both topped off. But thanks. ANy other suggestions? Thanks