Some Ford Escort owners report experiencing issues with the AC compressor clutch not engaging, which can stem from several potential causes. These owners often find that checking the continuity of the AC clutch and pressure sensor wires back to the fuse box is a necessary troubleshooting step. Additionally, testing the AC clutch relay and swapping it with the horn relay may help identify the problem. Some owners also report needing to verify the condition of the AC pressure sensor and potentially replace it. In some cases, shorting the AC clutch relay connections has allowed the clutch to engage and blow cold air. Furthermore, issues with other components such as the condenser, drier/receiver, evaporator coil, AC expansion valve, and the fuse box have also been noted. Measuring the air gap between the clutch and compressor is another diagnostic step some owners undertake. They also emphasize inspecting the AC compressor clutch fuse, relay, and ground connections for faults. It's important to note that many owners recognize that low or high AC refrigerant levels, faulty pressure switches, blown fuses, or poor electrical connections may prevent the AC clutch from engaging. Lastly, a common reason for the clutch not engaging is a blown fuse, often caused by a shorted hot wire or a faulty clutch assembly.
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