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Ron, ASE Certified Technician
Category: Ford
Satisfied Customers: 33018
Experience:  23 years with Ford specializing in drivability and electrical and AC. Ford certs and ASE Certs
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2003 Focus SE: temperature sensor..cooling..2.0 L, 16 v, zetec engine

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Where is the temperature sensor that sends the signal to turn on the 2 cooling fans.

The car is a 2003 Focus SE, 2.0 L, 16 v, Zetec engine.
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The cooling fans are controlled by the PCM (computer) by a signel from the CHT ( Cylinder head temp sensor) located behind the alternator on the engine. The alternator has to come off to change it.

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Customer: replied 4 years ago.

Thanks Ron,


Took a look at the engine. Replacing the sensor is probably more than I can chew with the belt and all. But, that is what I needed to know.



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