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If the radiator fan isn’t working, your engine may overheat. In this article, we’ll break down the likely causes—and the repairs—of a bad radiator fan. Why a Radiator Fan Won’t Work. In most cases, a blown fuse or bad starter relay is responsible for a vehicle's radiator fan not turning on.
A signal from the coolant temperature sensor is what triggers the ECU to turn on the radiator fan, and if it’s faulty, it can prevent the fan from working at all. Test the fan relay. Since the relay operates as a switch for the fan’s power, a defective cooling fan relay won’t energize the circuit.
The most common causes of why a radiator fan is not working are a blown fuse, a bad relay, or a broken wire. It can also be caused by a faulty coolant temp sensor, low coolant level or the fan itself can be damaged.
Learn why your radiator fan may not be working and how to troubleshoot issues to prevent engine overheating. Get expert repair tips on RepairPal.com.
1. Radiator Fan Doesn’t Come On. Most commonly, the faulty fan won’t enable when it’s broken. This is caused by the motor burning out, rendering the fan useless. As a car needs an engine, the radiator fan needs a functioning motor. Otherwise, there’s nothing to make the fan blades spin.
Learn how a radiator and a radiator fan work, how to diagnose the issue of radiator fan not working and the common causes.
Facing issues with your radiator fan? Today, we break down the common causes behind a non-functional radiator fan and step-by-step solutions to fix it.
Troubleshooting guide: radiator fan not working? Explore the most common causes and learn how to fix the issue to prevent engine overheating.
As the radiator fan goes bad, it produces different symptoms such as overheating, air conditioner not working, temperature warning light illumination, hot coolant, loud noise from cooling fan, or fan doesn’t work.
Troubleshooting Radiator Fan Issues. Once you’ve recognized the signs of a malfunctioning radiator fan, it’s time to start troubleshooting. Identifying the root cause of the issue can save you from potential engine damage and costly repairs. Here’s a guide on how to diagnose radiator fan problems effectively. Checking the Fan Motor