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2000 CRV Radiator fans only work when A/C is on.

Fuses OK ,replaced relays, replaced fan sensor by thermostat.

Sensor has continuity when put in hot water

They will run if jumped at sensor connector.

Any ideas? Am I missing something?
 

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Did you check the water temp when the switch closed? They should close at around 199 degrees. If it closes higher than that its bad. Make sure you bleed the air out of the system after opening it. Air sitting around those can cause the fans to come on late as well. Air doesn't transfer heat the same way fluid does.
 
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