Automotive Air Conditioning Information Forum

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 ...

The so-called liquid line should have a threaded connection matching that of the high-pressure switch. Sounds to me like you might have an incorrect switch.

I can't help but wonder about your charging procedure and whether you've done it correctly. The reason I say that is because at one point you mention weight, and at another you mention pressure.

Regardless, the charge amount must be weighed-in exactly to the manufacturer's specifications.

Under ...

Sounds great, Tim. As always, looking forward to offering assistance.

I presume that the 150 PSI reading you got on the low side is the static pressure (compressor not running). If so, the system now appears to be overcharged. What was the ambient temperature when you got that reading?

If sealer was put into the system, that's bad news, in part because if you take it ...

Just curious...is your 2015 Lexus NX a hybrid?

At a maximum ambient of only 10°C (50°F), it's just too cool yet to test A/C performance. At that temperature, the compressor is probably running at minimum displacement. Suggest waiting for warmer ambients--at least 27°C (80°F)--for meaningful system testing.