Quote:
Originally Posted by tsuter
Another note I've not seen much is MAKE sure your new expansion valve was set for R134A not R-12.
With R134A you want low side pressures of 18-20psi to get really cold. That control comes from the expansion valve adjustment. If it was set for R-12 you'd see 28-30 low side PSI and get only 40+F or so at the vents w 134a.
So whoever sold you that valve make sure it was set for R134a not R-12. And if they say its the same or doesn't matter you should get it somewhere else.
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I'll be sure to confirm. Thanks!