Carpokes Porsche Forum

Tom wrote: Mon Jun 29, 2026 3:32 pm

shft22 wrote: Mon Jun 29, 2026 11:10 am Replaced all four o-rings, did all the good stuff to get the system as it should and she is cooling ok. It was 91F outside when I took this picture.

Thank you all for your help.

IMG_9586.jpeg

Good work! Glad it was that simple!

If you are the type to fixate on things for no practical reason, know that you could get it another 15-20 degrees colder still.

Similar compressor in the 928, AC converted to R-134a, cruising west across central California on 46 headed towards the coast. Anti-freeze switch jumpered to support an un-tinted black car in Los Angeles. Cabin setpoint at 72º F, Ambient 85º F, center vent 20º F.

You can get the system really really cold, like freeze your fingers on the steering wheel cold; it's certainly possible with some care and diligence.

So if nothing turns into a pumpkin at 20F, why does the system even have the freeze-over switch? Frostbite risk? Now I want to bypass my freez-over switch so I can finally get started on that super-conductor stand-alone system I've been mulling.