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Are you loosing power to the AC compressor clutch on the GRAY/WHITE striped wire?
That eliminates everything but the PCM. You verified it is not the switches, sensors, wiring or AC clutch. The PCM internally after it warms up is cutting ground for the AC clutch WOT relay.
If it sees the engine overheating or a severe miss fire, it will shut the AC off. Check the ECT (Engine Coolant Temperature) sensor. If it shows the engine is overheating, it will disable the AC to cool the engine down by taking the heat away from the radiator from the condenser.
I would try to find a scan tool that can monitor it when the compressor turns off just to make sure. I would hate for you to replace it and still have the same problem.
You can have a hot running engine or an ECT showing hot, and no codes will be set.
The scan tool will actually show the temperature the ECT is reading.
Should be around 180 to 190 degrees. If it gets to 250, it is too hot.
Nope, that is all.
It should have a light green/red striped wire and a gray/red striped wire. The other one is for the instrument cluster.
Try the sensor first. If the thermostat was bad, the gauge would show it. Just make sure they give you the correct sensor. There are tabs on the sensor that only align with the connector for it. You may want to take it is and have them match it up.
Sure can. Just reply back when your ready and I'll get an email when you do. I do work at a dealership during the day as a service technician. So I will not be able to get back to you till the evening when I get home from work.
Where is the temperature gauge reading when it turns off?
That is normal, but I wonder if it not reading properly.
Your very welcome and thank you for the update.