That is not enough info to give a suggestion. What circuit is the fuse for - look at the fuse box? What happens when the fuse blows? Did something get wet or damaged prior to the fuse start blowing?
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.
Regards.
SOURCE: how to replace starter +1993 Mercury Grand Marquis
disconnect battery,,jack car up,,put jack stand on frame,,take starter bolts out,(may not be easy),,take wires off starter,,hoped it helped,,
SOURCE: heater and airconditioner control on mercery grand marquis
If the fan will not run on ANY speed in your Grand Marquis, the problem is most likely NOT the control switch.
Check for power and ground at the blower motor connector. If power and ground is present, replace the blower motor. Otherwise, the problem is most likely a failed blower speed control module (VERY common). The blower motor speed controller is located in the A/C evaporator housing just below the heater hoses.
Note: It is also common for a bad blower motor to CAUSE the controller to go bad. You MAY have to replace BOTH.
365 views
Usually answered in minutes!
×