Engine Cooling Fan Motor Relay: Replacement Guide Blue Streak Hygrade Ry1944 Relay

Author Dalbo 22 Jul 2026

Learn how to replace a cooling fan relay, test the old relay, install the new one, and verify radiator fan operation safely. Detailed diagram of the cooling fan relay, showing connections and wiring for proper fan operation and troubleshooting. Diagnosing and repairing a cooling fan motor relay is an essential task to ensure your vehicle's cooling system operates efficiently

ACDELCO - 15-81106 - Engine Cooling Fan Motor Relay

Engine Cooling Fan Motor Relay: Replacement Guide Blue Streak Hygrade Ry1944 Relay

The cooling fan relay is normally located in either the. The relay is the component that fails most. This guide answers it with symptom patterns, quick checks, and relay tests that separate a failed relay from a bad fan motor, blown fuse, wiring issue, or a missing command from the ecu.

Master the diagnosis of cooling fan problems

Use systematic checks and multimeter tests to verify if the fan relay requires replacement. A faulty cooling fan relay can lead to overheating before you know it Learn the symptoms, cost to fix, and if you can replace it yourself. The typical electric cooling fan circuit includes a temperature sensor, a relay, a control module and the fan motor