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Message: <blockquote data-quote="applehead" data-source="post: 1585644" data-attributes="member: 30944">Hello,My a/c blows hot after a couple of years of very cold. No noticeable leaks that I can see. Adding refrigerant to top off at 45 degrees PSI not fixing the problem.  Compressor clutch engages every 15-20 seconds as if low on refrigerant. Manifold gaskets show low side at aformentioned 45 degrees PSI but the high side at 50 degrees PSI!Is this a bad compressor even if it engages intermittently? Will a vacuum and refill solve the problem? Is another part of the system causing a low high pressure reading?Maybe the clutch portion of the compressor will fix the problem?Too many questions, would like to narrow down.Thanks</blockquote>