Vehicle Questions and Answers
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If your Chevrolet Aveo's radiator fan stops working, the first step to troubleshoot is checking the radiator fan relay, which can be a common point of failure. Replacing the relay could save you money compared to other repairs. However, there could be other issues at play, like a faulty thermostat preventing the fan from turning on, or issues with the coolant sensor or temperature switch. To identify the problem, start by scanning for diagnostic trouble codes using an OBD-II tool, as electrical issues are common. If no codes are found, testing the voltages and resistances of the components is the next step in your diagnosis.
Some typical reasons for a problem with the fan in a Chevy Aveo include a malfunctioning temperature switch, coolant sensor, or other sensor. The engine thermostat could be stuck in the open position, preventing the engine from getting hot enough to activate the fan. Another issue could be a faulty fan relay or a wiring problem, such as a blown fuse, a loose or corroded connector, or shorts or opens in the wiring.