A/C won't blow cold. I need to over-ride the A/C relay control to troubleshoot and/or add Freon. How do I do that?
May 29, 2019 at 8:22 AM
No coolant pressure, A/C not blowing cold air
2000 MERCEDES BENZ E320
THECAPTAIN41
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Welcome to 2CarPros.
Have you checked static pressure? If it is too low, it won;t engage the compressor. If you want to engage the compressor, you can run power directly to it. However, I would recommend getting pressure readings first and then go from that point. If the Freon is low, then adding Freon will increase the systems pressure and it will engage on its own.
Let me know.
Joe
Have you checked static pressure? If it is too low, it won;t engage the compressor. If you want to engage the compressor, you can run power directly to it. However, I would recommend getting pressure readings first and then go from that point. If the Freon is low, then adding Freon will increase the systems pressure and it will engage on its own.
Let me know.
Joe
May 29, 2019 at 7:13 PM