I had the same issues but I chanced upon this website that does aircon servicing that really helped with my problem. Do check them out!Alright, vent closest to the ac is at around 65 or 70 on a 90 degree day. My gauges are fluctuating. Low side is fluctuating between 20 to 45 and high side is fluctuation between 325 and 150. I assume the clutch is engaging because it wouldnt be around the 65 degrees coming out. I cannot figure out the fluctuating. The low side line will be cold to touch at one point and then be warm or hotter at another point.