[QUOTE=ekliptik;3987347]ahh yes i forgot to mentionreadings.
maybe someone with perfect working a/c can hook up a gauge set to their system and give me a working psi reading with the compressor engaged thats a little more precise.
Auto A/C is not like home A/C, in that you do not attempt to charge a system with guage readings. The only way to accurately determine charge is to recover the current charge, then recharge by weight.
At the same ambient temp the high side can vary by 50 psi and about 8 psi on the low side. My system suffered premature clutch cycling. The evaporator probe was turning off the clutch at 44 degree coil temp. I changed the placement of the probe to get it to cycle at 34 degree coil temp which in turn lowered my duct temp by about 11 degrees.
I see you are in Vegas. The guys at Auto Air & More on Trop have won the car A/C tech of the year award twice. May be time to go see them.