There hasn’t been any changes to the AC system. I’m not sure if it’s still all factory parts but for as long as I’ve owned it I haven’t touched the AC system. And it was working just fine last summer.

I've got an 03 Wrangler with the 2.4L 4 cylinder. Last summer the AC was working fine. Very recently I noticed that I no longer get cold air through the vents so I plugged in some gauges. With the engine cold starting on a 60F day, when I turn the AC on the high side immediately climbs to 500 psi an...