Plantman, you should be able to pick up a thermometer for cheap at just about any auto parts store. I spent the first two weekends of June in Ft. Lauderdale with the Jetta. Even with tinted windows, it won't cool the car off at 2:00 in the afternoon. If you're at least not sweating in the SD, then I think you're doing great.

That said, your high side pressure sounds a little low. Are you using an expansion valve calibrated for R12 or R134a?

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Rick Miley
2014 Tesla Model S
2018 Tesla Model 3
2017 Nissan LEAF
Former MB: 99 E300, 86 190E 2.3, 87 300E, 80 240D, 82 204D Euro
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