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Cooling Fan Operation

Hello, Pretty sure my cooling fans are not working, I had the coolant temp rising and rising reading at 205F+ at idle, car parked and neither fan was running. When

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Old 10-06-2020, 10:16 AM   #1 (permalink)
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Default Cooling Fan Operation

Hello,

Pretty sure my cooling fans are not working, I had the coolant temp rising and rising reading at 205F+ at idle, car parked and neither fan was running. When I drive, coolant temp drops down to 180, so I am sure the rest of the system is working and I have no CEL light/codes.

I am going to replace the control module for the fans, but my question is does any one know the expected normal operation for the fans so I can verify if they are both working correctly? I can not seem to find this information anywhere.
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Old 10-06-2020, 12:28 PM   #2 (permalink)
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This conversation from another thread is about oil temps, but it has the information you are looking for. You can also lower the temp threshold for when the cooling fans come on using a tuning software such as Ecutek.

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Originally Posted by radix023 View Post
I've been looking at this for a little while. I use Torque to display three temperatures: VVT Oil Temperature (from the NADV add-on for Nissans), coolant temperature, intake manifold temperature.

The thermostat and engine fans are set by the coolant temperature: the thermostat moves to circulate/cool at 185degrees F. the cooling fans kick on at 212degrees F.
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Old 10-06-2020, 12:59 PM   #3 (permalink)
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I don’t know much about the cooling fans, but you could put the car in a “diagnostic “ mode that will have the fans kick on. I tried what this video https://youtu.be/GIhZhCUmepQ described on my 370z and the fans came on.

I know it’s a 350z but it works on the 370
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Old 10-06-2020, 01:24 PM   #4 (permalink)
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If you are going to be doing your own troubleshooting and repairs, the FSM is a very valuable resource. It will have the info you are looking for and much, much more. Link in my sig.
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Old 10-07-2020, 11:39 PM   #5 (permalink)
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Quote:
Originally Posted by SchumiF399 View Post
I don’t know much about the cooling fans, but you could put the car in a “diagnostic “ mode that will have the fans kick on. I tried what this video https://youtu.be/GIhZhCUmepQ described on my 370z and the fans came on.

I know it’s a 350z but it works on the 370
Or this one.

https://youtu.be/2j3o0BwhMAU?list=WL

I tried it on my 370Z and worked fine.
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