Why This Car’s AC Blew Hot at Red Lights: An Electric Fan Clutch Teardown
The short answer: The radiator cooling fan motor was drawing 2.1 amps instead of 14.8. At highway speed, ram air through the condenser kept the AC working fine. The moment the car stopped, the condenser had no airflow, high-side pressure spiked to 380 PSI, the high-pressure safety cutout tripped, and the compressor shut off. Vent temperature […]