2001 Honda Civic "heat blowing" Questions

heat blows thru all vents on every setting heat blows thru all vents on all settings The flapper door that controls the vent system may be stuck, or there is no vacuum getting to it. Or, the wiring to

heat blows thru all vents all the time Heat control valve is jammed or the heat valve control cable is disconnected or siezed.

03 Honda Civic heater blows cold air. Only heats up when accelerating. Have the same problem since last spring. Kept going low on coolant and the coolant reservoir level would go up. Tried new ...

...blowing out cold air when I try to put the heat on. It does not overheat. It seemed to run a bit on the warmer side the other week wile idle and had the AC on. But it is getting to be 35 in the ...

I have a 2002 honda civic with 233000kms,while sitting in traffic I noticed the heat gauge had risen to 3/4 and the heater started to blow cold air.When i started driving the gauge went back within ...

03 civic heat doesn't work unless driving Heat blows really hot when driving but turns cold as soon as the RPM's get below 2000.. Heater control valve possibly? no that is a water pump or ...

and that is why my AC blows cold sometimes and then blows outside air but not cold . I turned it to heat then back to ac cold and it worked for a week , then same problem. I can,t find a part number ,

Honda Civic '98 HVAC It's freezing here in Michigan and the heating in my car acting weird. If I idle then the engine temperature gauge shows the correct reading and hot air blows into the cabin. Now,

...blowing hot agiain. It seems to me that it could be some kind of internal computer malfunction but I'm not sure. Has anyone else experienced this problem or offer any advice? First check the fused in ...

...blowing cool air want blow warm or hot air check top and bottom hose for heat if the top hose hot and bottom hose cold the thermostats not opening,or you may have a leak from a hose or water pump, ...