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There is no cooling fan sensor, ECM is turning the fan on and off. Between the ECM and fan there is a relay, located in front of the car on the left side behind the left headlight,it's the fourth relay from the inside out.

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βˆ™ 2006-08-01 03:08:56
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Q: Where is the cooling fan sensor on a 1992 Buick Century with 3.3L engine?
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