AC blows hot air while idling and at speeds below 40ish mph. At higher speeds, highway driving, the AC blows cold air. While running a pressure diagnostic on the low pressure port, I noticed the compressor cycles on and off… when off, the pressure registers in the green, when on, it registers in the red/high.
No issues with engine temp, etc.
Looking to get some idea of what may be causing the issue before taking it in to the mechanic.