Having problems with your 2003 Mercury Grand Marquis ?
Blower motor not working - 2003 Mercury Grand Marquis
First check the fuse. If it's good, use a test light on your blower motor to see if power is present with the key on and fan switch on. If you have power there, then your blower motor is faulty. If there is no power, and the fuse is okay, it could be the switch.
Repair Help & Product Troubleshooting for 2003 Mercury Grand Marquis
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