G35 Coupe V35 2003 - 07 Discussion about the 1st Generation V35 G35 Coupe

Cooling fans not working

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Old Jun 5, 2023 | 06:24 PM
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04 g35 coupe all black black rims
Cooling fans not working

Hi guys! I have an 04G35 just got it up and going again about after a year. Started driving fine, month later had to replace the radiator and thermostat. Another month went by and I notice my car overheating and leaking coolant. I had to tighten a hose. After that I noticed it still overheating but this time the fans weren’t coming on. I replaced fuse and all 3 relays. I also replaced coolant temp sensor. I was told it could be the fan module or the wiring/sensors . Any ideas or tips? Would love to get this back on the rode asap for Summer.
 
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Old Jun 6, 2023 | 06:40 AM
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Since u messed with it so much, first thing I would check is to make sure none of the wires got ripped in the process.
 
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Old Jun 10, 2023 | 06:57 PM
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Since you replaced the radiator I would first check to make sure you plugged the fans back in.

The fan relays get their power from the fusible link fuse slots I and H, both are 40amp fuses.
 
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Old Jun 16, 2023 | 09:44 PM
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2003 G35 Coupe
Our cars are getting old.
We just had the motor replaced with a JDM.

After driving it a bit, it started losing coolant then finally overheated. That turned out to be a tired hose spring clamp.

Then it overheated again a bit later. That turned out to be a dead fan unit (the unit was an eBay special I had replaced some years before).

It wouldn't surprise me that your oem fans are toast.

You can believe that QA knows exactly and designs in how long they will live.


I plan to blast my fan relays just because..
 

Last edited by shurur; Jun 16, 2023 at 10:13 PM.
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