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Subaru Outback 2.5XT Weak AC

alk on Sun July 11, 2010 10:13 PM User is offline

Year: 2005
Make: Subaru
Model: Outback
Engine Size: 2.5XT

I have a 2005 Subaru Outback 2.5XT. Last summer, the AC was very weak. I found an AC shop in Jacksonville, FL that measured the compression as low. He suggested replacing compressor and other components which I had done locally. It is still weak. I believe everything was replaced except for the expansion valve. Is there anything that would have been missed by someone who was not an expert?

HVargas on Mon July 12, 2010 1:53 PM User is offlineView users profile

If the compression as he states was low, I am assuming he meant the compressor wasn't pumping like it should, this was probably due to a compressor failure. With this compressor failure, you should replace the compressor, condenser, receiver drier and expansion valve as well as flushing the system. If the expansion valve wasn't replaced, it's highly unlikely they flushed the system either since that part has to be removed to flush the lines and evap. I would recommend either learning to do it yourself, or take it to a reputable shop and have them check the pressure's and go through the system to make sure all of the oil and debris was removed and start over clean again.


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steve325is on Mon July 12, 2010 6:02 PM User is offline

alk, I don't know what you are comparing the A/C performance to or if you are the original owner or not. I have had an '05 Legacy GT sedan since new, and its A/C performance is poor, IMHO. It takes mine forever to cool down all that black leather and vinyl, and you have even more in your wagon body. They use a very small scroll compressor, so the cooling at low engine RPM is even worse than on the highway.

When it is 100 degrees outside, I usually choose to drive my GM vehicle because the A/C performance is so much better.

There was possibly nothing wrong with your car before the parts replacement. There are quite a few people on that have 100k+ miles, and very few complaints of broken A/Cs. A few guys have lost condensors to rocks and a few have lost drive belts violently enough to break the connector off of the clutch, but that is about it.

-- Steve

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