Problem with A/C

[nick325xit 5spd]

Originally Posted by andrewwynn

Pressure sensor 0.9v. It's pretty low on the scale, what does that read when temp is hot and AC runs?

I don't know what the normal voltage off the press sensor is. It's not a simple on/off switch it sends a voltage to the brain that figure out the actual pressure. If it reads low incorrectly, it may allow operation as ambient temperature raises the pressure inside so see what is the voltage on the pressure sensor when it works and maybe watch real-time the ECT as well to see the exact temp where it magically starts working.

Yeah... I'd want to throw a set of gauges on the AC system. I like the theory that it could be right on the edge of too low for the system to kick on when cold, but that higher temperatures kick it over the threshold.

Note: Do NOT just add refrigerant to the system willy-nilly.