Nissan Maxima Radiator Fan Problem Indicators and How to Deal with Them
For a luxury four-door sports car like the Nissan Maxima, image and comfort are on the forefront. Imagine marring that image with such a simple, yet embarrassing, issue such as radiator fan malfunction. The radiator fan is part of the vehicle's cooling system that prevents the engine to overheat. When the radiator fan breaks, you are looking at a humiliating overheating episode. Do not fret, here are some common Nissan Maxima radiator fan issues and how you can easily troubleshoot them.
The Nissan Maxima's radiator is equipped with electric fans which are controlled by a control circuit either by a sensor, a thermal or a computer program. This control operates the fan through a relay. If the switch fails to send signal to the relay, the fan will simply not respond or operate. This means the issue is with the faulty switch relay and need to be replaced.
Thermostat's out of whack
Observe the radiator fan and start the car. Let it run for a few minutes on a minimum of 40 mile speed. If you see that the fan is turning but the temperature remains the same then the issue might be your thermostat or lack of coolant in the system. Check the level of your coolant and see if it needs to be refilled.
Blown fuse and faulty electrical wires
Here's another procedure where you can use the volt meter. Check the wires to see if there are still powers on them. The volt meter should read at least 12 volts to confirm that the blames is not on the fuse but the radiator fan. However, a reading below 12 volts means the fan needs replacing.
It's the fan
On the other hand, if the temperature becomes cooler, but the fan is not working, then it clearly points out to the radiator fan. It can be that the fan blades are broken or the fan motor is dead. Another indication that the fan is the problem is when you have to constantly replace fuses. It is definitely not normal to replace a fuse every month.
The old ones
Manual radiator fans used in the older models are solidly mounted or utilize a fan clutch. For manual radiator with a fan clutch, observe the radiator fan with the engine running. The fan should be rotating faster than the motor, if not, then replace the fan. For mounted radiator fans, when the fan is not rotating, the problem is with the belt not with the fan.