ohaccord

honda 2004 2.4l no heat out of drivers side not dual climate control lot of heat out of pass.side blend doors workink had inspection cam in and looked had all servos off they all work dont know whatelse to try?

nsxmatt

Check the operation of the thermostat.

ohaccord

new thermostat installed still no heat driverside

Gabe__

I had the same problem and didn't know what was the cause.
I preformed a little inspection and found I had a Heater Valve with a broken shaft.


The problem was fixed. But I still had very little or no heat from driver side. So I flushed out the Heater Core to see if it was clogged but it was fine.
I also replaced the thermostat but it wasn't it either.
So I realized if the problem wasn't coming from the engine, because the coolant hose going to the heater core and the return hose were both hot it must be from the HVAC Unit.
The problem was either the Air Mix Motor or the Flap under the dash on the driver's side.

​​​​I haven't gone around to fixing it but I should get to it soon

Waqas Malik

Im also facing the same problem, have you find the solution??