I have a 2003 Honda Accord the heater is blowing cold air. I checked the coolant level it is OK I replaced the thermostat and did not correct the problem. The engine temp is getting up to normal but still the heater is blowing cold air. This improves somewhat when I turn off the A/C. Any help would be appreciated. Can anyone tell me if there is a TSB issued on this?

I would check the climate controls , could be "stuck" on cold

i would check the climate controls , could be "stuck" on cold
Thanks white rook you are correct. It is the valve under the hood that controls the flow through the heater core. It just looked as though it was operating but in fact the control lever is corroded completely off. I will have to replace the valve. Thanks again

i would check the climate controls , could be "stuck" on cold


Hi,

I have same problem on my Honda Accord.Please could you show where is the Climate Control is located in hood and what does it look a like... I will sincerely appreciate that.

Check this link for a pic of your valve.
1997 Honda Accord Heater Control Valve And Cable (http://autorepair.about.com/library/illustrations/bl303a-lib.htm)