Question about 2001 Mercury Grand Marquis
Dash appears to be working fine.
Ok you have a bad blower speed controller if you have power to the motor.
It is located under the hood in the heater housing just below the heater core coolant hoses.
You will have to drain coolant.
Remove the nuts holding the Vapor Management valve and set it aside.
Remove coolant hoses to heater core.
Disconnect electrical connector to the blower speed controller,remove screws,pull it out of heater housing.
Posted on Feb 20, 2009
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Posted on Jan 02, 2017
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