2007 Legacy 2.5i AC question

[mbciuso]

Hi,

 

I have a 2007 Legacy 2.5 non turbo. When i turn on the AC, over a spam that ranges from several minutes, if it's really hot and humid to an hour if it's not so hot out, i will notice the volume of air coming out of my dash vents slowly begin to decline. The AC appears to continue to function, i.e., the compressor is still engaged, but the air volume decreases to the point of almost no air coming out. When i shut it off and let it sit for a while then turn it on again, it will work for some time then the problem re emerges.

 

When i left the hood and inspect the low pressure line leading into the firewall, i see that it is completely frosted over.

 

Any thoughts on what could be causing this and what my potential solutions are. I have not brought the car in for a mechanic to look at it, nor have i checked the refrigerant level. I have, however replaced the cabin air filter, and in fact, tried to run the system with the filter completed out, but the problem persists.

 

Thanks,

Gerard

[travrach]

Hi,

 

The AC appears to continue to function, i.e., the compressor is still engaged, but the air volume decreases to the point of almost no air coming out. When i shut it off and let it sit for a while then turn it on again, it will work for some time then the problem re emerges.

 

 

 

Thanks,

Gerard

 

Gerard,

Can you clarify when you say to the point of no air coming out do you mean the amount of air actually blowing at you is lower then normal or "cold" air is no longer coming out? I ask because you mention cabin air filter.

[mbciuso]

Hi,

 

The blower continues to operate, but the actual amount of air coming through is reduced. It's still cold, but a lot less of it is blowing out of the vents.