my 04 honda civic hester blows cool air
Asked by theronnorwoo Aug 25, 2015 at 11:57 AM about the 2004 Honda Civic Coupe EX
Question type: Maintenance & Repair
o4 honda civic on heat mode only cool not warm
2 Answers
When Hesters (heaters) blow cold air it could be the hose going to the heater core is blocked or the valve is not opening. In reality there are a few other issues that could do this but the easiest to check is flow from the coolant to the heater ,,, other issues could be be ,,,, a malfunctioning ; blender door,, a bad temperature setting sw. ... a disconnected vacuum hose.
There may be something wrong with your heater core.