Nissan Rogue Sport AC and radiator fan

Maintenance/Repairs
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1

The car is a 2018 Nissan Rogue Sport with 45K miles.
The problem is that the AC works well when driving but not so well at idle.

The car was in a different states and driven by my kid while in college, problem started a few months ago. A local shop checked “everything” and said it is the compressor, but they also said they don’t work on Nissans which is kinda odd.

So, the kid is done and car is back in CA. Freon level on the low port is fine

When I turn the AC on, the radiator fan does not turn on. I let the car warm up and the radiator fan would still not come on. There are two connectors in the radiator. When I turn the AC on, the lower connector does get 12 volts but when I plug it in the fan would not turn. I am not sure what the upper connector does. Did not unplug it-yet.

What baffles me is that the car does not overheat and the kid states the the temp has not gone up either. There are no codes, oil and oil cap and coolant look fine, so I don’t think we have a blown head gasket/overheating/etc and the car drives fine.

Looking online, the radiator fan on these cars are a real weak point. What I don’t understand is the absence of overheating.

I would rather not take it to a shop as the fan replacement is well within my scope.

Any thoughts an input appreciated.

2

Supply your own power AND ground

Does the fan now engage?

1 Like
3

I was going to do that first but access is very limited and I could not get my connectors down there. The only way is to get the fan out and test it, which if am in that deep, might as well buy a new fan for $100.

4

As far as overheating goes, and depending some on ambient air temps, if it doesn’t sit at idle for very long then it might not overheat. Once moving you’ve got air cooling the condenser and radiator.

5

Can you use a scanner to command the fans to come on, or see if the ECM is commanding the fans to come on in live data??

Can you get to the plug from under the vehicle??