expansion valve testing?

Try to make temp checks even if only "quick" and "by feel." The liquid line not far from the txv should be warm to quite warm. On many systems that are working hard, you can actually "feel" the flow as there is often pockets of boiling refrigerant on a hot day in the line. Yeh!! I know!! It is supposed to be liquid, but not always. If you can get to the evap side of the txv it should be quite cold and forming condensation. If you can remove the sense bulb, this should cause the txv to go wide open.

So far as the dryer, both lines should be "reasonably" within same temp. If there is a dramatic change, this indicates a blockage or restriction. "Use your head." The tube leaving the compressor is hot gas, and you normally cannot touch it anywhere. If you have an infra-red/ laser thermometer, you should be able to see cooling as the refrigerant passes through the condenser, and the liquid line coming out should be markedly cooler. It may still be quite warm, depending on ambient T and engine bay conditions and airflow, etc

Don't discount mechanical door problems, especially nowadays with stepper motors and "more plastic". Some of the Mopar trucks are plagued with this problem.

This is where "I am spoiled." On the older, "built in place" systems I started life on, there were always lots of service valves and access ports so you could isolate parts of the system--as well as make pressure checks.