I've done cars that with 1 ounce overcharge will cut out on high pressure- some systems take only 14 ounces or a pound-- very small room for error.

Never put FREON into a 134a system-- Freon is the trade name for R-12. You want to put in Suva if you want to talk trade names. Or better yet, just refer to it as refrigerant and never be wrong. We are all telling you that pressures mean little or nothing in mobile a/c-- there is a weight specificat...

And why do you think compressor must cycle????? Under high load it should run steady-- anything above 80 degf ambient, I would expect continuous run.. A compressor cycles to avoid freeze-up of evaporator, this only occurs when demand is low (low ambient or little or no air flow through evap) and com...

http://www.techchoiceparts.com/refriger ... oldsmobile

http://www.techchoiceparts.com/refriger ... oldsmobile

As a beginner you should learn right away that in mobile a/c you need to charge by weight-- pressures mean very little- too many variables. Extract, recover, weigh refrigerant, then vacuum and charge by under hood specified amount of refrigerant. then look at the pressures to notice any pressure dev...

What I am telling you is that there is no way to generate 225 psi on the low side-- low side gauges read to about 120psi then go through a retard zone to max out at 350 or so -- which can't happen. The amount of refrigerant NEVER affects the STATIC pressure- you could have 4 ounces, 4 lbs or 40 lbs ...

If tank has 80 psi and compressor is running and low side is 30 psi, then it will draw in refrigerant, turn tank upside down will help- warming tank will also help. when empty the tank should measure same as low side was when running...

IMPOSSIBLE-- your low side guage does not read that high on the scale-- you are interpreting the readings incorrectly....

A simple "Google search" for olds aurora refrigerant capacity yields 28 ounces for a 2001 model-- sure would wish everyone would use the searches available online--

My guess is that you have half a charge of refrigerant and the inlet of evaporator feeds the passenger side and there is nothing left over to boil off on the driver's side of evaporator-- seen it many times always the driver's side warm first when losing charge. Fix is to discharge, recover and weig...