94 Honda accord heater doesn't work just blows cold?

You should check the thermostat to see if it is operating corectly, or your system may need to be perged.

either your heater control valve is bad or you heater control switch on your dash is broken pull the knob of and see if it is cracked.

Low coolant? Bad thermostat? Heater core plugged,restricted or airbound? Heater control cable or valve not working?

COULD BE A BAD HEATER CORE COULD BE A BAD HEATER CORE sounds like the heater control switch needs replacing.if that doesnt fix it, you need new heater core

Compressor not running? Check fuses, check switch

Heater core changed three years ago,I changed Thermostat Heater still blows cool air.

it could be your thermo stat

can you please clarify what you mean, do you mean that the front heater blows cold but the rear blows hot or do you mean that when the heating is on cold it blows hot? many thanks paul

the heater blows warm air when fan is on low but blows cold air when fan is turn to higher setting

Get the air out of your heater core.

The heater fan ONLY blows the air, it does not make the temperature of that air. Your heater temperature controls how hot the air is. Adjust your heater temperature for hotter or cooler air.

we changed radaitor & thermastate , now heater blows cold air

heater hoses might have been disconected

ihave a 1986 chevette that when i turn defrost on it blows out heat and when i put heater on it blows out only cold air? ihave a 1986 chevette that when i turn defrost on it blows out heat and when i put heater on it blows out only cold air?

Horn button is a momentary switch. Yours sounds stuck. Check the contacts. Once it grounds, the horn blows & sounds grounded.

heater vent will not readjust to any position

you must have low coolant or a bad heater core

Clogged Heater core... common problem with 2002 dodge

If the engine is not getting to operating temperature replace your thermostat( located at the lower end of the top radiator hose in the water outlet on engine. If the engine IS reaching operating temp, take your hand and feel both heater hoses( they are 1/2"+ hoses that go thru firewall on pass side) both need to be hot; if only one is hot your heater core is plugged and you can flush it. I hope this helps you. Mark

The most common reason a automobile heater blows cold air is the water level is low. Check the water level and fill to the appropriate level.

Check the fuse first. If the fuse is good apply 12 volts directly to the horn. If it blows then the horn button on the steering wheel or wiring is defective. If not, the horn itself is defective.

it is a heater. heat. it blows heat. warm air

The Same Situation Just Happened To Myself; A few Months Ago. I Brought My Honda Accord Into A Car Shop Course, All Along I Knew It Was The Lack Of Coolant

Prob the control switch. I have a similar problem with a 1993 Taurus. U put it on ac it blows out def. Def. blows out vent and none of it really blows out unless it's on high.

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