What is your question?
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What is your question?
fan will work when tested but will not when engine is hot

1 Reply
I've already answered this for you... It's the SAME THING!.. Sensor sends signal to ECM which sends signal to cooling fans... Can be tested with proper scanner. .. Scanner can command cooling fans 'on' ...testing circuits, relay and fuse.
Its not the same thing, there is a sensor for the fan AND a sensor for the guage. He found the gauge sensor he cant find the fan sensor.
Ok then.... Happy hunting!!