Sanity check for my AC diagnosis

[Rusty Marlin]

I replaced the expansion valve today and recharged it. It held 250 to 275 psi on the high side at idle with a shop fan in front. It was 95F in the shop. Misting the condenser with water would drop it down to 200 psi. After cleaning the absolutely nasty and caked up evaporator I'm getting a lot of condensate dripping.

Does that high side psi sound normal for idle at 95F ambient?

Thanks to everyone who replied and helped out with this. I learned a lot and I'm pretty sure it's fixed.

Print this out and put it with your gages.

According to the chart, you're a skosh low, but as @flintknapper said, dial in your vent temps and you'll be finer than frog hair.

 

[jbc28]

Print this out and put it with your gages.
View attachment 3690982
According to the chart, you're a skosh low, but as @flintknapper said, dial in your vent temps and you'll be finer than frog hair.

very nice! thanks

 

[flintknapper]

Good info. Thanks. I added 860g yesterday. It seems to be cooling fine. I will get some vent temps soon. Hopefully, this new expansion valve won't stick like the old one. I do think the old one was the original. It was a denso part, and I didn't see any evidence of someone being in there. I also replaced all of the foam gaskets on the evap box. They were falling apart. I could not feel any leaks around it once reinstalled.

Good work, you have done it 'right'.