[s-cars] Ac problems, need help

[Raul]

I know shoulnt idle the car long but sometimes i do for an hr the most.
Problem is at about 10-20min 80deg weather and temp gauge at about 11o'clock. Ac works ok till then, then comp shuts off for some seconds and back on, and repeat. Ch 52 changes when this happends from ok ok ok to refrig high press swich f118
Now what could this be from?

Tia
Raul
y95s6 134k