Hi again - just an update. Indeed, the 2000 Accord does have a heater
control valve in the heater hose, located bout 4 inches from the
firewall (on the passenger side of the car); I applied some 3-in-1 oil
to the linkage and valve lever - this did the trick - no more warm air
with the control set to cold!
>> Stay informed about: 2000 Accord - blowing warm air