Vette(s): 1973 Orange Metallic Coupe (orig owner), L82, 4 spd (WR), PS, (A/C & PW (I installed from wrecked 73)), leather, AM/FM Stereo, ran with '65 FI unit earlier & will again some day.
It could mean the system charge is low also. I would try first to add one can of freon to see if you can get that high pressure up. You need to make sure that you're adding the same type of freon that's in the system however.
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