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Cabin Filter Observations
Posted by Joe [Email] (#444) [Profile/Gallery] (more from Joe) on Sun, 24 Jun 2018 16:13:31
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2003 9-5 Linear. The AC vent temps were around 58, which seemed high. The system is/was properly charged. On a whim I checked the cabin air filter, it was clogged and dirty. Instead of replacing the old one I left it out while I waited on the new one to arrive (a WIX from Amazon). Vent temps dropped to 48/47 without the filter so I thought eureka, it was the filter, until I installed the new one, which brought the temps back to the 58 area.

That's a huge jump due to a filter, apparently the back pressure is causing compression and heating of the air (my theory). I'm toying with modifying the new filter so it's not as restrictive but still keeps out leaves/bugs/mammals. Any thoughts on this?
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