What if your air conditioning compressor on 1991 Dodge W250 diesel keeps makes a popping noise when at idle you checked the AC pressures and the low side is 85 the high side goes off the gauge over 50?

If your 1991 Dodge W250 diesel's air conditioning compressor is making a popping noise at idle, it may indicate a problem with the compressor itself or the AC system's pressure balance. The low side pressure of 85 psi is unusually high, while the high side pressure exceeding the gauge limit suggests a potential blockage or overcharge in the system. This situation could lead to compressor failure or other damage, so it's advisable to have a professional technician inspect the system for proper diagnosis and repair.