Hi
A/c blows just below ambient. Today condenser 88F, Vent 81F.
Low side reads about 30psi High side 175psi at approx 1000rpm.
Added R134a and low side up to about 35psi high side remains same. Compressor remains on. I touched the expansion valve (warm) and attached a thermometer to it and it read about 83F. the output of the expansion valve is cooler than the input ,but no where near cold. Bad expansion valve?
Thanks

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1979 300D.