can changing your water temp gauge cause radiator fan to stop working

• 2022-07-21

As long as the water temp gauge sensor is good, the fan is normal under normal circumstances. It is recommended to let the car run at idle speed for a long time to see if the fan will not stop working. If it has not been rotating, it may be necessary to take it to the garage for inspection.

If the radiator fan does not turn, there may be two reasons, one is that the fuse is burnt out, and the other is that the thermal switch is damaged.

If the fuse is blown out, because the situation is unknown, do not use copper wire or iron wire to replace the insurance, so as to avoid causing greater losses. You can find some ordinary household fuses and tie them on the blown fuse instead, but it is only a stopgap measure. If you can find a maintenance station, you'd better solve it immediately.

If the fuse is not blown out, check whether the fault is caused by the damage of the cooling thermal switch. The inspection method is to turn on the ignition switch and the a/c switch of the air conditioner without starting the engine. If the electronic fan rotates, it means that the thermal switch is damaged. If the electronic fan does not rotate, it is likely that the electronic fan is damaged.

If the thermal switch is damaged, you can unplug the plug of the thermal switch, find a section of wire with wire cover (about 10 cm), strip a section of wire cover at both ends, expose the copper wire, and plug it into the pins on both sides of the plug to provide a high-speed circuit of the electronic fan. In this way, you can start the engine and find the nearest maintenance station for repair. If the electronic fan is damaged, the fault can be eliminated only by replacement.

The reason why the fan doesn't work is that the fan is mainly used for heat dissipation of the cooling system. If the water temperature sensor is broken, the computer can't receive relevant data, so it can't be connected. The fan turns.

Its function is mainly through its internal resistance changes to achieve through the sensor resistance changes to change the current changes through to drive the water temperature gauge changes, indirectly telling people the working temperature of the engine.