I've seen a couple of threads on this, but wasn't able to find the exact answer I am looking for, and I'm not smart enough to figure it out on my own. My A/C hasn't been seeming too cold lately. It works, it just takes a lot longer than I remember it last summer to get cool. I checked my low-side port using a "EZ chill" gauge I just bought. Doors open, AC max cold, recirculating and it was about 35 PSI - which I think is supposed to be about right. But I've seen it's dependent on ambient temperature - it was 90 degrees outside. According to the "EZ chilll" gauge, it suggests 45-55, which seems way to high to me based on what I've read in this forum. Any advice? Unrelated - I've only just started getting into DIY on my car. It's always been intimidating to me, but it's been a lot of fun, cost effective, and a lot easier than I would have though too!
If you see clear fluid flowing with no bubbles in the AC sight gauge, your refrigerant level is OK. If you see a continuous flow of bubbles, you probably need more fluid.
Original thread w/ similar question you have. Specs below and Toyota testing procedure in this LINK, are for a 2007 Prius. Low Pressure 35PSI = .2413MPa(Mega-Pascal) [specifications .15MPa-.25MPa]. GOOD, w/in specifications. High Pressure not provided by OP. [specifications = 1.37MPa-1.57MPa]. UNKNOWN if High Pressure w/in specs. Online PSI to MPa converter. LINK Good luck.
