Engine Cooling Fans & Components

Frequently Asked Questions

Start with how the fan system is behaving. If temperature climbs mainly at idle or low speed, the problem may be airflow rather than the radiator itself. An electric fan that does not run can point to the fan motor, fuse, relay, temperature switch, controller, or wiring, while a mechanical fan may have a worn clutch. Diagnose the failed part before replacing the whole fan system.