A/C Blowing Warm Drivers Side GEN 1 LS

[q723108]

So my A/C is blowing warm air on drivers side once car gets in motion. I've replaced the DCCV and dont have any datc codes indicated. When start car and let run in stationary position drivers / passenger sides blow cold air with a/c on. Once I'm driving the drivers side becomes warm, its like air from outside is entering the cabin via driver side vents once car is in motion. Depending on how hot temp is outside determines how how air will be coming out of driver side ducts. I'm puzzled and am looking for some direction in reference to repairing this issue. Any help would be greatly appreciated.

 

[joegr]

Did you have the exact same symptom(s) before replacing the DCCV?
Did you use a Motorcraft/Bosch DCCV, or some other brand?
Does the passenger side remain cold?

It sounds like the valve (DCCV) is leaking (internally) a little on the driver's side. Inlet air for the driver's and passenger's sides is not independently controlled. Both sides get the same. In fact, both sides normally get fresh (outside) air. Recycled (cabin) air is only selected during maximum cooling or if you press the button button to manually override. The only thing that is or can be controlled separately between the driver's and passenger's sides is coolant flow in the heater cores. The DCCV is what controls that.

 

[q723108]

Also checked fuse for DCCV and all looks good there as well.

 

[joegr]

Also checked fuse for DCCV and all looks good there as well.

You'd have no cooling and maximum heating (both sides) if the fuse were blown...


Did you have the exact same symptom(s) before replacing the DCCV?
Did you use a Motorcraft/Bosch DCCV, or some other brand?
Does the passenger side remain cold?

 

[AmsterDutch]

What's the pressure reading on your Low pressure port? Could be as simple as recharging your refrigerant coolant or your compressor might not be working properly

 

[joegr]

What's the pressure reading on your Low pressure port? Could be as simple as recharging your refrigerant coolant or your compressor might not be working properly

Perhaps, but the nature of the evaporator design is that low refrigerant causes a loss of cooling on the passenger side first, not the driver's side. That was the reason for my (still unanswered) question of "Does the passenger side remain cold?" I suppose that if q723108 really wants help, he will answer my three questions, asked twice now.