UPDATE: Replaced the pressure control valve and ac is working great. I ordered my part from FCP Euro.

Volvo AC Compressor Control Valve - Genuine Volvo 31305844

When idling, it’s cool but not cold (with rear ac on). It’s already in the 90’s here 🥵
Do you think the compressor needs replaced? Maybe just the pressure control valve? Something else? Thank you!

 

It's actuality a displacement control valve - and that's certainly a common failure that can cause poor cooling at lower speeds. .

 

Thank you, I’ll see if FCP has the part.

 

You might want to actually diagnose (or have someone diagnose) the problem first - it's pretty frustrating to replace something (that can cost a few hundred dollars) and have it not solve your problem.

 

Besides the compressor or pressure control valve, it could also be a problem with the system's airflow or temperature regulation.

First, check the refrigerant levels and make sure there are no leaks.

Also, check the A/C condenser and radiator for any dirt or things blocking airflow.

A clogged or dirty cabin air filter can also reduce airflow and affect A/C performance.

Plus, check the A/C condenser fans and compressor clutch.