Does your compressor code resemble
this in Begin.vi with a Close in Finish.vi and absolutely nothing else?
The only reason I ask is that sometimes teams try to control the Pressure Switch and the Compressor Relay directly in Teleop.vi or some other inappropriate place.
You might try temporarily upping the Pressure Relief Valve to 125 or 130 psi to see if your Pressure Switch is set to trip a smidgen high.
Your compressor Spike wiring is obviously working. The only possible pressure switch wiring problem would be a short. It obviously trips the DIO so the code turns on the compressor. You could try swapping out the pressure switch for another one.