The bottom line: The fuel pump relay on a 2003 Mercury Grand Marquis is located in the engine bay fuse box next to the battery. If your car cranks but...

If you own a 2003 Mercury Grand Marquis and are dealing with fuel system issues, you need to know exactly where the fuel pump driver module (FPDM) is located. The fuel...

The bottom line: If your 2003 Mercury Grand Marquis is experiencing hard starting, stalling, a no-start condition, or a check engine light, the fuel pump driver module (FPDM) is a...