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not developing enough vacuum while driving to keep the blend door open check your vacuum lines for leaks

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What causes a heater in an 02 honda civic ex to blow cold air at idle or prolonged stopped.?

A heater in a 2002 Honda Civic EX may blow cold air at idle or while stopped due to a few potential issues. One common cause is low coolant levels, which can prevent proper circulation through the heater core. Another possibility is a malfunctioning thermostat that might not be opening properly, leading to insufficient engine temperature. Additionally, a failing water pump or air trapped in the cooling system can also disrupt the flow of hot coolant to the heater core.


Why are the fans not blowing warm air when the heat is on on a 1999 Honda civic?

Sounds like your heater hose going to the heater core is stopped up some where along the way, Or your thermostat is broken. Otherwise if there is hot water getting to the core then it WILL blow warm air.


Why does the heater not blow air?

The heater does not blow air because it emits infrared rays that have heat molecules within them, thus releasing heat, not blowing it. A heater does not blow air becasue there is no moving air source within the heater. The heater emits infrered rays that cause heat to slowly flow out of the heater.


Heater on but not blowing warm air?

heater on at idle and will not blow warm air. when moving it blows the warm air from the vents. what will cause this


Why would the fan control on any speed not blow air The heater blower motor is ok for a Honda Civic?

If you know the fan motor is good but it will not work, first check the fuse. If the fuse is good, then it is either the fan motor switch or the resistor pack that is defective.


What causes a Honda accord AC system to blow warm air when idleing and cold when moving?

Needs a recharge


What would cause your 98 Honda civic to run hot and the air condition to blow hot air?

ONE OF THE HOSE WAS BROKEN AND NO ANTI-FREZEE


What would cause a 2003 Buick Century's heater to blow cold air when idleing but will blow warm air when moving?

Probably need to add antifreeze. Check the Radiator not the overflow tank. If you are low on antifreeze it will not circulate through the heater core.


Your heater will not blow on your 1996 Ford Contour?

heater will not blow on a 1996 ford contour


Why does your heater not blow out warm air?

if the heater does not blow out warm air change the setting.


Why does the heater for my 2003 Honda Pilot not blow hot air out of any vents in the front but the rear vents blow hot air?

Your front blower motor has gone out. There is a front and a rear blower motor.


What is wrong with the heater on a 1992 Honda Accord if the fan does not blow at all and you can smell smoke from the left side of the hood after driving?

Defective blower motor?