Interesting. Those pressures sound perfect. It sounds like maybe the high pressure switch may be going bad and shutting the compressor off at the wrong point allowing the system to warm. When you think about it, at an idle, the under hood temp is higher which will cause the pressures to go up. If the switch is going bad and it kicks off the compressor, the inside temp will go up.
Let me know if it changes for you.
Friday, May 22nd, 2015 AT 8:44 AM