What is the problem with a Honda accord heater blowing cold air?

Answer 1

Not knowing what year Accord you have, if it's '94-'97, check the temperature guage, and if the engine is not reaching normal operating temperature, check your coolant level, or replace the thermostat (around $12), it's located at the engine end of the LOWER radiator hose. Next check your heater cable adjustment. In the passenger side floor area, look up toward the console, and find a small, funny-shaped black plastic cover, that has two black plastic rivets holding it in place. Remove those and the cover, then make sure the heater cable jacket is still attached to the clamp where it should be. Marks in the jacket will show where it was originally installed. In this same area, make sure the white plastic part that this end of the heater cable attaches to, is working properly. The grease on it gets old. Detach the cable, and use aerosol carb and choke cleaner, or WD-40, and a rag, spray the part and work it back and forth manually until it moves free again. Reassemble and hopefully enjoy.