While i m not familiar with the 2008 escape most resistors are located near the blower motor under the dash on the passenger side.
Ford escape blower resistor location.
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2014 ford escape blower removal.
This a how to video for replacing a motor blower resistor in a 2010 ford escape.
It could be the blower resistor.
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You will need to replace this part if your fan does not work at all settings.
It ll have a plug with several wires and usually 2 screws holding it in.
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