This is my first post on the forum.
I have a 05 accord with only 78,000 miles that the air conditioner has been blowing warm on driver side but cold on passenger side for months. It finally went all warm and I had the compressor replaced thinking that would take care of the whole thing but it did not, the driver side is still warm.
Here is an even stranger symptom, when I am in city driving and especially at a stop light the driver side becomes cold, not as cold as passenger side but much cooler than when I am on highway.
Anyone have an idea of what the issue might be??

 

It may not have been the compressor to begin with, so I wonder if the shop tested anything or they just replaced it? Often the problem of being cold only on one side is from low pressure.

Since they would have to recharge the refrigerant when they replaced the compressor, that seems to eliminate low pressures. I'm assuming(!) that they pumped the system down with a vacuum pump and would have noticed any leaks when they checked it holding vacuum.

The other thing is there are air-blend doors in the system that work along with the AC and heater. So these doors open & close to either bring air through the heater core or not. If the motor that drives the door for the drivers side is broken or somehow messed up, that can cause your original problem. I'd have thought that a shop would check these things.

 

thanks, but the shop is very reputable and checked the whole system out before they replaced the compressor.
I read that the flow of cold air comes from the bottom of the compressor first which feeds the passenger side and that maybe being low on freon prevented it from cooling the drivers side.
However, does that make sense when it does cool the drivers side at stop lights?
I'm leaning towards the door theory. Is there anyway of testing them without taking out the whole dash?

 

That thing about the compressor doesn't make sense because there's NO cold air AT ALL coming from the compressor. The compressor compresses the refrigerant, which then goes to the condenser (in front of the radiator), then its liquid which goes to the evaporator where it evaporates creating cooling.

Being low on refrigerant can cause the evaporator to get cold unevenly, but depending on where the liquid sprays in which is probably not the same for all cars. Anyway, if a reputable shop checked out the AC system before replacing the compressor then I guess they found something wrong with the compressor. I hope they weren't guessing.

The air blend door for the drivers side is driven by a motor that's somewhere alongside the driver's right foot. You have to remove some panels to see it. If you turn on the key (don't need the engine running) then change the temperature setting real hot or real cold you can probably hear that motor running to move the door. At any rate you have to dig in there to see whether the motor is messed up or if the levers or linkages to the actual door are broken.

There's also a way to read error codes from the HVAC system but I don't know the details. Someone please chime in...

 

https://www.hondaaccordforum.com/for...94/#post370304

 

It is your blend door for sure. Get it replaced

 

i could not get any codes to come up from this procedure?

 

Possible losing freon from the valve stems.