Automotive Air Conditioning Information Forum

Seems to me that the leak is somewhere in the (new) condenser, or in one of the joints, because the system didn't have a massive leak last year.

You might also consider replacing any rubber hoses with modern barrier hoses because the originals, installed when the truck was new and used R-12, weren't of the barrier design and might leak out over time.

At 21 years old, the car might have a leak at the compressor shaft seal, one of the lines might be corroded-through (check for oil and dye under any insulation that might be present), or one or more o-rings/gaskets/threaded joints might be leaking, which so far have gone unnoticed. Do you live in ...

The specs that I have are as follows: 24 ounces net weight of R-134a, and 5.0 fluid ounces of PAG-46, for both the 4-cylinder and 6-cylinder engines.

2006 Hyundai Sonata...Issue: System will not hold vacuum, post-replacement. System equalizes from vacuum in just 30mins, which suggests (to me) a rather large opening... somewhere.
How many miles has this vehicle logged?

It's unlikely that any of the new parts you installed have such a sizeable ...

I dont have the car in front of me at the moment. But immediately before the issue they were within range while running, AC on. What I recall is like 40-50 low side and around 190ish high side. 75-80 degrees out.
How much mileage has this vehicle logged?

If your recollection is correct, and with ...

I agree with the previous comment about the FS remanufactured compressor. Most if not all MVAC pros recommend installing only brand-new compressors.

You didn't have abnormally high pressures on the high side before you replaced the components (or at least I don't think you did). So another aspect ...

FJC produces good quality Schrader valves (valve cores) and is an OE supplier. Be sure to install a new cap onto each port because the cap is the primary seal, not the valve core.

I'm not an expert on this, but the outermost dimension of the threads measures 0.375 or 3/8". I'm guessing that the actual dimension at the root of the threads is a bit smaller. So you would need a switch with that dimension.

I would order an R-134a conversion switch for an '85 Corvette with its ...

Those of us who have a long history of working on MVAC (Mobile Vehicle Air Conditioning) systems generally do not rely on shop manuals for pressure readings. Experience plays a part. In addition, a number of parameters can and will affect pressures, only one of which is ambient temperature ...