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2004 Nissan Murano
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Discussion Starter #1
I have a 2004 Murano. The cooling fans will not come on. Does anyone know what could cause this? Thanks in advance for your time
 

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Is your temp gauge going up? Overheating? What is your ambient temp? If you turn on the AC, fans should run. Reason for it not running if its busted would be the motor burn out. You can test that by disconnecting the wiring on the fan and connecting it to your battery directly. If it does not spin its the motor. You can just change the motor or the entire fan assembly. If the fan spins, btw, there are 2 speeds on those fans (low/high), Issue could be the the fan relay in the fuse box, Or the temp sensor has failed, And a few other possibles. More troubleshooting required with these.
 

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This may be too basic a note, but remember that fans only run when needed, so they're not on all the time. You can expect them to come on when the car is sitting idling, or in stop and go traffic where air flow through the radiator is limited.

Nitely's questions about temp gauge are well put. If you do indeed have fans never coming on, most likely cause is usually a fuse or relay. Fan motors fail less often than fuses or relays fail. I'd check them first. The owner's manual should list fuses and their locations.
 

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2004 Nissan Murano
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Discussion Starter #4
Is your temp gauge going up? Overheating? What is your ambient temp? If you turn on the AC, fans should run. Reason for it not running if its busted would be the motor burn out. You can test that by disconnecting the wiring on the fan and connecting it to your battery directly. If it does not spin its the motor. You can just change the motor or the entire fan assembly. If the fan spins, btw, there are 2 speeds on those fans (low/high), Issue could be the the fan relay in the fuse box, Or the temp sensor has failed, And a few other possibles. More troubleshooting required with these.
It has overheated once and blown off the bottom radiator hose. Almost lost it. I let it idle for like 20-30 minutes. No fans at all. It just starts to over heat.
 

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Never let your temp go up to max. You will damage your engine.

Assuming you have fixed the radiator hose and changed or refilled your coolant to proper level, check the above mentioned things. Relay, and fans. Easy to do. If you find any of those bad, replace. Then test drive. Update us what you find.
 
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