Why Your Radiator Fan Runs Constantly: Diagnosis and Fixes
A cooling fan stuck on full speed is usually not an ECU failure. Learn the actual culprits—thermostat, temperature sensor, relay, or A/C system—and how to pinpoint what’s wrong.
A cooling fan stuck on full speed is usually not an ECU failure. Learn the actual culprits—thermostat, temperature sensor, relay, or A/C system—and how to pinpoint what’s wrong.