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Posted on Mar 31, 2010
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198 mercury sable cooling fans motor

The cooling fans will not run from controler switch but will run when i jump it can you help ?

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gord storey

gord storey

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  • Posted on Mar 31, 2010
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Cooling fans ( on radiator ) only come on when the engine reaches a certain (hot) temprature. There is a temp sensor threaded into the radiator end reservoir that switches a relay off and on that runs the fans. Either the temp sensor or the relay is probably bad. Normally , those fans will not be on if the car is moving , the air flow from just driving is sufficient to cool the rad. If you stopped and idled for a while , eventually the rad would heat up enough for the fans to come on.

Testimonial: "thx you i will check sensor, if the sensor and fan relay is ok what would be the next step ?"

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  • Posted on Jun 14, 2011
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Where is the fan relay located

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I am having issue with my 1997 Mercury Sable overheating. The fans are not turning on but I have used a battery to jump them and they easily move when I put leads from the battery to the fans.

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