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Discussion Starter · #1 ·
Radiator fan only goes on when I unplug the temperature sensor .

when I switch the aircon the fan works . But does not work when driving without aircon .

and works when I unplug the temperature sensor .

hope it makes sense .

kindly help
 

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2006 Hyundai Tiburon SE
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With the temp sensor unplugged the ECU either goes into a fault mode and turns on the fans as a safety OR it falsely detects a temperature above 195F which is the approximate trigger temp to flip on your fans. I would recommend replacing the engine coolant temperature sensor and see if that solves your problem.
 

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Discussion Starter · #3 ·
With the temp sensor unplugged the ECU either goes into a fault mode and turns on the fans as a safety OR it falsely detects a temperature above 195F which is the approximate trigger temp to flip on your fans. I would recommend replacing the engine coolant temperature sensor and see if that solves your problem.
You are right, changed the engine coolant temperature sensor, problem solved
 

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Thanks for closing this out, helps the next person.
 
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