Question about 2005 Chrysler Pacifica

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I can't find the radiator cooling fan sensor

I put in a new cooling switch on the housing of thermostat and my fan don'turn on. I pull the switch plug and I bypass the switch plug and the fan turn on, can any one tell me were is the sansor that would be my next step.

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If the sensor is for the car and the correct temp more than likely the car is not hot enough to turn on the switch , hence fan.

the fan works, if you bypass switch..

Posted on Apr 28, 2015

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(i) thermostat
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(iii) fan relay
(iv) fan switch
(v) water temperature sensor.
In your case, I suspect that your radiator probably is clogged, so needing replacement.

To Replace the radiator:
a. allow the engine to cool.
b. place a suitable container under the radiator, and drain it out by turning backward the wing-nut under it.
c. open the radiator cap to allow atmospheric air to further push down the coolant.
d. with a piece of pliers, depress the top clamp holding the radiator hose. Do the same for the lower radiator hose.
e. remove from the bottom of the radiator and plug wth suitable bolts, the two transmission fluid rubber lines.
f. with a 10-mm socket and wrench remove the two bolts holding the radiator to the front frame.
g. depress the electrical plug at the bottom of the radiator. Remove its thermo switch at the bottom left hand side of the radiator. (replace with new if changing to new radiator) Also notice two rubber cups at bottom of radiator.
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To replace thermostat:
a. disconnect the negative terminal of the battery.
b. drain the coolant into a container, as
explanied above.
c. remove the upper radiator hose from the thermostat housing on the engine block.
d. remove the two bolts from the thermostat housing. Please note the way it was bolted to the engine. Clean its housing and seating areas.
e. fit a new o-ring to the thermostat, and replace with a new thermostat.
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g. Replace the top and bottom hoses back.
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To replace the fan relays:
a. open the hood.
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To replace the water temperature sensor:
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b. unplug it from it location.
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1 Answer

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