my AC on a 2000 Nissan frontier has excessive pressure on the low pressure side . The compressor is also not coming on. Is there a high pressure switch that comes on the cuts power to the compressor if there is excessive pressure ? Should I drain some refrigerant from the system to bring the pressure down. I don't think the expansion valve is the problem, because there is excessive pressure even when the system is off. Perhaps the previous owner overcharged it
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Can you give some background as to why it has excessive pressure.– HandyHowieJul 2, 2021 at 19:32
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I bought the car used and I simply hooked up a gauge to check if the pressure was too low for the system to come on– OscarJul 2, 2021 at 21:19
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What pressure are you seeing?– HandyHowieJul 2, 2021 at 21:46
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