Okay. I am not saying you are wrong because that can be happening, but I want to clarify something you said. You said it does not overheat unless you turn the A/C on. Does that mean the engine overheats when you turn the A/C on or the A/C system is "overheating" and starting to blow warm.
If the engine is starting to overheat when you turn the A/C system that could be the source of you then A/C issue. Basically if the radiator is clogged/restricted then it will run fine until you add the additional load to the engine of the compressor. Then the engine starts to overheat. This additional heat in the coolant/radiator is not allowing the Freon in the A/C system to cool down and it starts to rise in pressure and not blow cold any longer.
Basically I think you have a cooling system issue that is leading to the A/C system issue, assuming you have an engine overheat when the A/C is on.
Normally a restriction in the A/C system will cause low pressures as it prevents the compressor from building the pressure.
The fact that this works fine until the engine gets hotter makes me think that is the issue. Does this make sense?
Sunday, July 26th, 2020 AT 6:02 AM