that time of year

[Vin]

The AC High Pressure Switch (sensor) is supposed to prevent the system from reaching over 500psi where the protection valve opens and blasts your r-134a out the back of the compressor. I would replace the High Pressure Switch, drier can, and the condenser(since they cannot be flushed very well).


Flush the rest of the system with Acetone or AC Flush, blast clean dry air thru it, assemble and lubricate new O-rings before install, then refill.

There should be a sticker under the hood probably near the passenger side radiator, AC Compressor, or Drier Can that specifies the type and amount of Refrigerant and PAG Oil. PAG oil absorbs moisture from the air, so keep bottle and system closed and assembled as much as possible.

Last of all, do not overcharge the system, that won't make it colder.