Sup guys so I have an 02 4wd ranger 4.0 L and my AC doesn't blow cold. My compressor shuts off and on rapidly so I added the right amount of refrigerent but still nothing. I changed my low pressure switch still nothing. It was working fine before but all of a sudden it just stop blowing cold. I used pressure gauges for both low and high pressure and they were bouncing all over the place when I tried using them. Then again I didn't really know how to use them I kinda just knew that they didn't look right. I tried adding more refrigerant and releasing refrigerant but still nothing. Could I get some help? Youtube isn't doing anything for me and im out of options.