AC talk

Does anyone have the high/low pressure chart for the air compressor gauges ?

 

I haven't done a/c work in a long time, but a/c systems work on certain thermodynamic principles that are not specific to Toyota. You need the information for pressure readings based on outside air temperature (and humidity to be really specfic), reading pressures with the a/c on high, interior fan on high, and engine running around 1500 RPM. With the correct refrigerant charge, and assuming your system is operating correctly, you will achieve certain high and low side pressure readings depening on the outdoor air temperature and humidity. So try to find that information online or from airconditioning book from a library, and go from there. You could try reading up here: autoacforum.com. There are probably other websites. As I said, I (fortunately) have not had to mess with A/C in a long time.

Good luck.

 

Adding this info here