Problem with A/C

[daki50]

I have a picture I took last time I sent it to you, when I press the button, Inpa prints that the compressor is on but there is no cold air


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[X5chemist]

Mine has the same problem. Until the engine is at temp, it won't cool. The fan doesn't turn on when it's cold. The fan works when manually tested using a Foxwell Pro. If it's hot outside, I get moving quickly so speed cools the condenser. Once it's hot, the fan is on cooling the engine keeps the A/C ice cold. Mine has no codes either.

[daki50]

Have you tried changing any of the parts so far (that I don’t try if it’s not up to it)?


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[daki50]

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[PalmSpringsE534.6]

Start your engine...go to the radiator output temperature sensor (on the lower radiator hose) and then disconnect the connector. The fan should start right up. If not, replace the sensor. If it does start right up, then do the same test with the AC pressure sensor.

[daki50]

When i dissconect pressure switch fan work. i will check radiator sensor


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[daki50]

As far as I can see on the internet, my sensor is near the intake manifold? on the lower hose of the radiator is not


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[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.

[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.

[daki50]

1.5V when ac work. What is etc







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