Hello everyone.

Hoping some one can help out. My 2008 Honda Accord seems to be having some HVAC issues.

With the heat on it is cooler by at least 15 deg on the drivers side. At the same time with AC on the drivers side is over 15 deg warmer.

Things i have checked.:
- cabin filter clean
-Blend door on drives side moving up and down when adjusting temp.

Hoping someone has the answer for me of a suggestion what to look at next.

Thanks

 

Try the HVAC self-diagnostic test without a scanner.

I attached some pics of the procedure. This will help identify if the hvac control unit is detecting an issue in the system and may give you some direction.

 

Thanks PAhonda.

Not sure this will work for me as my car does not have the dual zone HVAC system. Just the basic with the temp **** to adjust,

 

Opps. Here are the instructions for the non-climate control.

 

Thanks for trying to help out.. Unfortunately no error came up. this is a strange one for sure.

 

This is tricky since you have only one blend door motor. You could remove the blend motor and manually move the air mix to see if something is not moving inside the heater unit properly.

It is possible you are dealing with 2 separate issues. A clogged heater core and low a/c freon.

 

Thanks PAHonda.
I will give it a try and see what happens. I really appreciate all you help and support.

 

Yeah removed the actuator but same result by manually moving the flap.
I am stumped

 

If the air is being properly routed, you might be dealing with two issues. A clogged heater core and low R134a charge.

The next easiest step is to put pressure gauges on the a/c system to read the high and low pressures when the engine is running to check the a/c performance. Do not blindly add R134a to the system, because overpressurizing the system is dangerous and can turn into an expensive repair. At minimum, follow and inspect the a/c hoses and look for signs of leaks like oil/grime buildup at connections.

 

thank you PAhonda.

I will give it a try