AC PT CHART 120°F equals 171 psi  using temperature Sensor Instead of Pressure Sensor ? High side

PT chart is only mostly accurate on a properly completely full refrigerant charge in automotive

 There’s more to it than that I just did not explain everything there’s many fine details of base knowledge that is needed. You just do not jump to conclusions and use one bit of information as truth unless you understand the rest.

This is how people get themselves in trouble trying to do diagnosis without knowing all the facts



[mailmanjoe]

How are you able to determine it only has vapor pressure? Through the sight glass when recovering?

[quicksilver]

That stupid high pressure line valve is the same as on my 2000 Grand Prix (but for 134a), what a horrible idea, why not just use a regular style valve?. Mine was leaking and I had to change the entire high pressure line from the condenser to the evaporator. the PIA problem is the line is buried under the ABS module and power brake booster, not fun to do, there is just not much room. I dint want to have to unbolt the ABS module, and then remove the power booster just to replace a line. face palm/shakes head/rolls eyes

[sivucit]

hi, can we determine liquid and vapor pressure based on temperature reading?. i assume yes.