Question about 2001 Mercury Grand Marquis
Had new blower motor installed at dealer
Well, if nothing was disconnected on the ducts and the selector works fine , my guess will be that you have a nest in the fan it self, take it out and clean the nest so the fan can blow full amount of air. good luck.
Posted on Nov 28, 2014
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Posted on Jan 02, 2017
The blower speed controller is located under the hood on the right or passenger side on the heater housing just to the side of the heater hoses near the very back of the right cylinder head.
Yes that would cause the concern you are having.
Posted on Feb 05, 2009
it is most likley to be the heater core, try to flush and fill with new anti freeze solution, if you replace thermostrat use lowest rating to open heater faster.
Posted on Nov 10, 2009
SOURCE: 2003 mercury grand marquis LS
The blend door is stuck in cold position. That usually happens because the blend door actuator has failed.
You will need to test and replace the blend door actuator.
To replace the actuator you will need to take apart the dash and remove completely the instrument panel,d isconnect the connector, remove the four screws, remove the temperature blend door actuator and replace it.
The replacement is not a job for beginners, since you have to take apart the dash to access the actuator.
Posted on Nov 18, 2009
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