Air Conditioner not working?

The a/c is automatic I will have to reconnect the gauges to give exact pressure readings but the compressor is not disengaging at high rpms it is running full time even when I am driving down the road( I suspect that it has something to do with the door that switches from heat to cool maybe?) Thanks

Ambient temp is 93f gauge pressures are 240 high side 47 low side

Ok I added about 1/2 to 3/4 can low side 37 high side 350 I checked 1 more thing. The temp of the air at the panel inside is 70 degrees at idle. When I rev the engine and hold it at 3000 rpm for a couple of minutes the air temp is 134 f. The receiver dryer is cold and dripping condensation

Sorry for the delay in the response. My meter seemed to be broken. I went into town and bought another one. Ready for the next tests thanks

I located a small black box looking item mounted to the bottom of the radiator support 2 wires to it I assume that I found the right part. Has a yellow and black wire running to it (maybe the wire is faded?) The reading to it is 998 with the ohm meter set at 2000 ohm setting. The outside temp is 80 degrees thanks

Thanks for the pic I had tested the wrong part. The sensor gave no reading on the 200 or 2k settings. On the 20k setting it gave a reading of 7.36 at 90 degrees im sure I tested the right part this time (green and black wire running to it) thanks

Sorry for the delay in getting back to you I live 30 miles out of town went in to order the part they sent the wrong one. I have the right one now installed it. Same problem. I ohmed the sensor and it reads the same as the old one (within a few ohms ) I noticed that it also senses for the outside temp reading on the mirror ( when I unplug it and turn on the key the thermometer doesnt work. It is reading the correct outside temp (presently 93 degrees). Thanks