im running the wire to both ends on the plug of the sensor on the thermostat housing and it turns the fan on for while, but eventually the fan stops working. I dont know if this is causing the realy to overheat, but once i come to a stop for a few minutes it often over heats, or it over heats while im driving, even when the air is getting through to radiator. thermostat is new, water pump is good.

 

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